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  • It’s not about the mass
    Nat. Energy (IF 46.495) Pub Date : 2020-11-24
    Xavier Moya; Neil D. Mathur

    Electrocaloric cooling devices traditionally comprise sub-millimetre-thick ceramic working bodies surrounded by relatively massive apparatus. Now, cooling devices that are each based on a thin polymer layer have been stacked to yield a composite lightweight device that pumps heat across a wide temperature span.

    更新日期:2020-11-25
  • Multifaceted political and social drivers inform wind energy repowering decisions and potential
    Nat. Energy (IF 46.495) Pub Date : 2020-11-18
    Lena Kitzing; Morten Kofoed Jensen; Thomas Telsnig; Eric Lantz

    Wind energy repowering decisions are multifaceted and depend on the physical, political and social landscape, as factors such as noise regulation, aesthetics and political bargaining can significantly influence project development. Policy should recognise that a technology perspective alone cannot inform implementation pathways and should be supplemented with an understanding of the political and social

    更新日期:2020-11-18
  • Cutting cobalt
    Nat. Energy (IF 46.495) Pub Date : 2020-11-12

    Renewable energy technologies do not always employ sustainable resources. The scarcity of cobalt supply must be addressed in transportation electrification.

    更新日期:2020-11-12
  • It’s time to focus on organic solar cell stability
    Nat. Energy (IF 46.495) Pub Date : 2020-11-11
    Quinn Burlingame; Melissa Ball; Yueh-Lin Loo

    The power conversion efficiency of organic solar cells has rapidly increased, yet significantly less attention has been paid to materials stability and device longevity. For organic solar cells to make an impact in the marketplace, researchers, funding agencies and journals should do more to address this crucial gap.

    更新日期:2020-11-12
  • Holistically representing women
    Nat. Energy (IF 46.495) Pub Date : 2020-11-09
    Daniel Erian Armanios

    Given the benefits of improved health and reduced cooking time, women are assumed to unequivocally prefer clean cooking fuels. Now research indicates that women using firewood and those using cleaner alternatives both believe their cooking fuel supports their well-being in several ways, suggesting more complex trade-offs in fuel choices.

    更新日期:2020-11-09
  • The impact of policies and business models on income equity in rooftop solar adoption
    Nat. Energy (IF 46.495) Pub Date : 2020-11-09
    Eric O’Shaughnessy; Galen Barbose; Ryan Wiser; Sydney Forrester; Naïm Darghouth

    Low- and moderate-income (LMI) households are less likely to adopt rooftop solar photovoltaics (PVs) than higher-income households in the United States. As the existing literature has shown, this dynamic can decelerate rooftop PV deployment and has potential energy justice implications, in light of the cost-shifting between PV and non-PV households that can occur under typical rate structures and incentive

    更新日期:2020-11-09
  • Differences in firewood users’ and LPG users’ perceived relationships between cooking fuels and women’s multidimensional well-being in rural India
    Nat. Energy (IF 46.495) Pub Date : 2020-11-09
    Yuwan Malakar; Rosie Day

    Clean cooking fuels are generally assumed to bring health and other benefits for women compared with solid fuels, which suggests they should be preferred. However, despite the availability of clean cooking fuels, such as liquefied petroleum gas (LPG), the scale of solid fuel use in rural India remains large. Here we examine women’s positions on fuel transition and multidimensional well-being through

    更新日期:2020-11-09
  • Two-dimensional Ruddlesden–Popper layered perovskite solar cells based on phase-pure thin films
    Nat. Energy (IF 46.495) Pub Date : 2020-11-09
    Chao Liang; Hao Gu; Yingdong Xia; Zhuo Wang; Xiaotao Liu; Junmin Xia; Shouwei Zuo; Yue Hu; Xingyu Gao; Wei Hui; Lingfeng Chao; Tingting Niu; Min Fang; Hui Lu; Han Dong; Hui Yu; Shi Chen; Xueqin Ran; Lin Song; Bixin Li; Jing Zhang; Yong Peng; Guosheng Shao; Jianpu Wang; Yonghua Chen; Guichuan Xing; Wei Huang

    Two-dimensional Ruddlesden–Popper layered metal-halide perovskites have attracted increasing attention for their desirable optoelectronic properties and improved stability compared to their three-dimensional counterparts. However, such perovskites typically consist of multiple quantum wells with a random well width distribution. Here, we report phase-pure quantum wells with a single well width by introducing

    更新日期:2020-11-09
  • Combining information on others’ energy usage and their approval of energy conservation promotes energy saving behaviour
    Nat. Energy (IF 46.495) Pub Date : 2020-11-02
    Jacopo Bonan; Cristina Cattaneo; Giovanna d’Adda; Massimo Tavoni

    Households reduced their electricity use the most when they learnt both that they were using more energy than their neighbours and that energy conservation was socially approved. This suggests that efforts to use social information to nudge conservation should combine different types of social feedback to maximize impact.

    更新日期:2020-11-02
  • Three thumbs up for social norms
    Nat. Energy (IF 46.495) Pub Date : 2020-11-02
    Jon M. Jachimowicz

    Social norm interventions are widely used to foster residential resource conservation. Now researchers have shown that the effectiveness of providing information about others’ energy use alongside messages of social approval for energy savings behaviour depends on the strength and consistency of these messages.

    更新日期:2020-11-02
  • Cool water splitting by microwaves
    Nat. Energy (IF 46.495) Pub Date : 2020-11-02
    Daniel R. Slocombe

    Microwave heating has become a useful tool in catalysis to obtain chemical products under unconventional reaction conditions. Now, researchers have demonstrated low-temperature water splitting to produce hydrogen using microwave catalysis and revealed the important role of reduced oxides in the process.

    更新日期:2020-11-02
  • Multifaceted drivers for onshore wind energy repowering and their implications for energy transition
    Nat. Energy (IF 46.495) Pub Date : 2020-11-02
    Lena Kitzing; Morten Kofoed Jensen; Thomas Telsnig; Eric Lantz

    Wind energy is anticipated to become a backbone of the future energy system. Ageing wind turbine fleets, increasing land-use constraints and rising relevance of societal factors make the deployment of land-based (onshore) wind energy ever more complicated. Consequently, repowering is expected to become a rapidly growing point of focus for the wind industry. Here we propose a more holistic and socially

    更新日期:2020-11-02
  • Hydrogen production via microwave-induced water splitting at low temperature
    Nat. Energy (IF 46.495) Pub Date : 2020-11-02
    J. M. Serra; J. F. Borrás-Morell; B. García-Baños; M. Balaguer; P. Plaza-González; J. Santos-Blasco; D. Catalán-Martínez; L. Navarrete; J. M. Catalá-Civera

    Supplying global energy demand with CO2-free technologies is becoming feasible thanks to the rising affordability of renewable resources. Hydrogen is a promising vector in the decarbonization of energy systems, but more efficient and scalable synthesis is required to enable its widespread deployment. Here we report contactless H2 production via water electrolysis mediated by the microwave-triggered

    更新日期:2020-11-02
  • Trapping lead in perovskite solar modules with abundant and low-cost cation-exchange resins
    Nat. Energy (IF 46.495) Pub Date : 2020-11-02
    Shangshang Chen; Yehao Deng; Hangyu Gu; Shuang Xu; Shen Wang; Zhenhua Yu; Volker Blum; Jinsong Huang

    One major concern for the commercialization of perovskite photovoltaic technology is the toxicity of lead from the water-soluble lead halide perovskites that can contaminate the environment. Here, we report an abundant, low-cost and chemically robust cation-exchange resin (CER)-based method that can prevent lead leakage from damaged perovskite solar modules under severe weather conditions. CERs exhibit

    更新日期:2020-11-02
  • A systematic review of the costs and impacts of integrating variable renewables into power grids
    Nat. Energy (IF 46.495) Pub Date : 2020-11-02
    Philip J. Heptonstall; Robert J. K. Gross

    The impact of variable renewable energy (VRE) sources on an electricity system depends on technological characteristics, demand, regulatory practices and renewable resources. The costs of integrating wind or solar power into electricity networks have been debated for decades yet remain controversial and often misunderstood. Here we undertake a systematic review of the international evidence on the

    更新日期:2020-11-02
  • Progress and prospects for ultrathin solar cells
    Nat. Energy (IF 46.495) Pub Date : 2020-11-02
    Inès Massiot; Andrea Cattoni; Stéphane Collin

    Ultrathin solar cells with thicknesses at least 10 times lower than conventional solar cells could have the unique potential to efficiently convert solar energy into electricity while enabling material savings, shorter deposition times and improved carrier collection in defective absorber materials. Efficient light absorption and hence high power conversion efficiency could be retained in ultrathin

    更新日期:2020-11-02
  • The interaction of descriptive and injunctive social norms in promoting energy conservation
    Nat. Energy (IF 46.495) Pub Date : 2020-11-02
    Jacopo Bonan; Cristina Cattaneo; Giovanna d’Adda; Massimo Tavoni

    Behavioural interventions that leverage social norms are widely used to foster energy conservation. For instance, home energy reports combine information on others’ behaviour (descriptive feedback) and approval for norm compliant behaviour (injunctive feedback). In a randomized controlled trial, we investigated how descriptive and injunctive feedbacks interact to affect electricity use, and evaluate

    更新日期:2020-11-02
  • A cascade electrocaloric cooling device for large temperature lift
    Nat. Energy (IF 46.495) Pub Date : 2020-10-26
    Yuan Meng; Ziyang Zhang; Hanxiang Wu; Ruiyi Wu; Jianghan Wu; Haolun Wang; Qibing Pei

    Cooling technology that is both compact and flexible is increasingly vital for the thermal management of wearable electronics and personal comfort. Electrocaloric (EC) cooling provides a potential solution, but the low adiabatic temperature change of EC materials has been the bottleneck in its progress. We demonstrate a cascade EC cooling device that increases the temperature change, with enhanced

    更新日期:2020-10-28
  • Structural transformation of highly active metal–organic framework electrocatalysts during the oxygen evolution reaction
    Nat. Energy (IF 46.495) Pub Date : 2020-10-26
    Shenlong Zhao; Chunhui Tan; Chun-Ting He; Pengfei An; Feng Xie; Shuai Jiang; Yanfei Zhu; Kuang-Hsu Wu; Binwei Zhang; Haijing Li; Jing Zhang; Yuan Chen; Shaoqin Liu; Juncai Dong; Zhiyong Tang

    Metal–organic frameworks (MOFs) are increasingly being investigated as electrocatalysts for the oxygen evolution reaction (OER). Despite their promising catalytic activity, many fundamental questions concerning their structure−performance relationships—especially those regarding the roles of active species—remain to be answered. Here we show the structural transformation of a Ni0.5Co0.5-MOF-74 during

    更新日期:2020-10-28
  • Tandem cells under the weather
    Nat. Energy (IF 46.495) Pub Date : 2020-10-21
    Jan Christoph Goldschmidt

    The design of research solar cells is typically optimized for laboratory conditions but in the real world they are exposed to changing temperatures influencing their performance. Now, research from outdoor tests reveals how temperature alters the current of perovskite/silicon tandem solar cells and how this changes the optimal bandgaps.

    更新日期:2020-10-28
  • The role of adsorbed hydroxide in hydrogen evolution reaction kinetics on modified platinum
    Nat. Energy (IF 46.495) Pub Date : 2020-10-19
    Ian T. McCrum; Marc T. M. Koper

    The bifunctional mechanism that involves adsorbed hydroxide in the alkaline hydrogen oxidation and evolution reactions, important in hydrogen fuel cells and water electrolysers, is hotly debated. Hydroxide binding has been suggested to impact activity, but the exact role of adsorbed hydroxide in the reaction mechanism is unknown. Here, by selectively decorating steps on a Pt single crystal with other

    更新日期:2020-10-20
  • Estimation of change in house sales prices in the United States after heat pump adoption
    Nat. Energy (IF 46.495) Pub Date : 2020-10-19
    Xingchi Shen; Pengfei Liu; Yueming (Lucy) Qiu; Anand Patwardhan; Parth Vaishnav

    Electrifying most fossil-fuel-burning applications provides a pathway to achieving cost-effective deep decarbonization of the economy. Heat pumps offer a feasible and energy-efficient way to electrify space heating. Here, we show a positive house price premium associated with air source heat pump installations across 23 states in the United States. Residences with an air source heat pump enjoy a 4

    更新日期:2020-10-20
  • Energy innovation needs better targets
    Nat. Energy (IF 46.495) Pub Date : 2020-10-15

    The renewal of Mission Innovation is important — but more targeted interventions are needed to deliver on necessary energy-innovation goals.

    更新日期:2020-10-16
  • Lighter and safer
    Nat. Energy (IF 46.495) Pub Date : 2020-10-15
    Leif Nyholm

    Current collectors are essential components in lithium-ion batteries, but are typically made of metal foils that do not contribute to the battery capacity. Now, a fire-extinguishing lightweight polymer-based current collector is developed that enhances both the energy density and safety of the battery.

    更新日期:2020-10-16
  • Low-bandgap mixed tin–lead iodide perovskites with reduced methylammonium for simultaneous enhancement of solar cell efficiency and stability
    Nat. Energy (IF 46.495) Pub Date : 2020-10-15
    Chongwen Li; Zhaoning Song; Cong Chen; Chuanxiao Xiao; Biwas Subedi; Steven P. Harvey; Niraj Shrestha; Kamala Khanal Subedi; Lei Chen; Dachang Liu; You Li; Yong-Wah Kim; Chun-sheng Jiang; Michael J. Heben; Dewei Zhao; Randy J. Ellingson; Nikolas J. Podraza; Mowafak Al-Jassim; Yanfa Yan

    High-performance perovskite/perovskite tandem solar cells require high-efficiency and stable low-bandgap perovskite subcells. State-of-the-art low-bandgap mixed tin–lead iodide perovskite solar cells exhibit either a high power-conversion efficiency or improved stability, but not both. Here we report a two-step bilayer interdiffusion growth process to simultaneously meet both requirements for formamidinium-based

    更新日期:2020-10-16
  • Ultralight and fire-extinguishing current collectors for high-energy and high-safety lithium-ion batteries
    Nat. Energy (IF 46.495) Pub Date : 2020-10-15
    Yusheng Ye; Lien-Yang Chou; Yayuan Liu; Hansen Wang; Hiang Kwee Lee; Wenxiao Huang; Jiayu Wan; Kai Liu; Guangmin Zhou; Yufei Yang; Ankun Yang; Xin Xiao; Xin Gao; David Thomas Boyle; Hao Chen; Wenbo Zhang; Sang Cheol Kim; Yi Cui

    Inactive components and safety hazards are two critical challenges in realizing high-energy lithium-ion batteries. Metal foil current collectors with high density are typically an integrated part of lithium-ion batteries yet deliver no capacity. Meanwhile, high-energy batteries can entail increased fire safety issues. Here we report a composite current collector design that simultaneously minimizes

    更新日期:2020-10-16
  • Mental accounting mechanisms in energy decision-making and behaviour
    Nat. Energy (IF 46.495) Pub Date : 2020-10-12
    Ulf J. J. Hahnel; Gilles Chatelain; Beatrice Conte; Valentino Piana; Tobias Brosch

    Mental accounting refers to the fact that people create mental budgets to organize their resource use and to create linkages between specific acts of consumption and specific payments. Research on financial decision-making and consumer behaviour shows that these mechanisms can have a large impact on decisions and behaviours, deviating from normative economic principles. Here we introduce a theoretical

    更新日期:2020-10-12
  • Author Correction: Machine learning model to project the impact of COVID-19 on US motor gasoline demand
    Nat. Energy (IF 46.495) Pub Date : 2020-10-08
    Shiqi Ou; Xin He; Weiqi Ji; Wei Chen; Lang Sui; Yu Gan; Zifeng Lu; Zhenhong Lin; Sili Deng; Steven Przesmitzki; Jessey Bouchard

    An amendment to this paper has been published and can be accessed via a link at the top of the paper.

    更新日期:2020-10-08
  • All-perovskite tandem solar cells with 24.2% certified efficiency and area over 1 cm 2 using surface-anchoring zwitterionic antioxidant
    Nat. Energy (IF 46.495) Pub Date : 2020-10-05
    Ke Xiao; Renxing Lin; Qiaolei Han; Yi Hou; Zhenyuan Qin; Hieu T. Nguyen; Jin Wen; Mingyang Wei; Vishal Yeddu; Makhsud I. Saidaminov; Yuan Gao; Xin Luo; Yurui Wang; Han Gao; Chunfeng Zhang; Jun Xu; Jia Zhu; Edward H. Sargent; Hairen Tan

    Monolithic all-perovskite tandem solar cells offer an avenue to increase power conversion efficiency beyond the limits of single-junction cells. It is an important priority to unite efficiency, uniformity and stability, yet this has proven challenging because of high trap density and ready oxidation in narrow-bandgap mixed lead–tin perovskite subcells. Here we report simultaneous enhancements in the

    更新日期:2020-10-05
  • Differences in carbon emissions reduction between countries pursuing renewable electricity versus nuclear power
    Nat. Energy (IF 46.495) Pub Date : 2020-10-05
    Benjamin K. Sovacool; Patrick Schmid; Andy Stirling; Goetz Walter; Gordon MacKerron

    Two of the most widely emphasized contenders for carbon emissions reduction in the electricity sector are nuclear power and renewable energy. While scenarios regularly question the potential impacts of adoption of various technology mixes in the future, it is less clear which technology has been associated with greater historical emission reductions. Here, we use multiple regression analyses on global

    更新日期:2020-10-05
  • Author Correction: Patenting and business outcomes for cleantech startups funded by the Advanced Research Projects Agency-Energy
    Nat. Energy (IF 46.495) Pub Date : 2020-09-25
    Anna Goldstein; Claudia Doblinger; Erin Baker; Laura Díaz Anadón

    An amendment to this paper has been published and can be accessed via a link at the top of the paper.

    更新日期:2020-09-28
  • Author Correction: Federal energy R&D: Startups supported by ARPA-E were more innovative than others but an investment gap may remain
    Nat. Energy (IF 46.495) Pub Date : 2020-09-25
    Anna Goldstein; Claudia Doblinger; Erin Baker; Laura Díaz Anadón

    An amendment to this paper has been published and can be accessed via a link at the top of the paper.

    更新日期:2020-09-25
  • Oases in the valley of death
    Nat. Energy (IF 46.495) Pub Date : 2020-09-21
    David M. Hart

    Government programmes such as the Advanced Research Projects Agency-Energy (ARPA-E) are designed to help cleantech companies overcome startup challenges and bring innovations to market. New analysis shows that support from ARPA-E has led to higher patenting rates but success in winning follow-up funding remains unclear.

    更新日期:2020-09-21
  • Heuristic solution for achieving long-term cycle stability for Ni-rich layered cathodes at full depth of discharge
    Nat. Energy (IF 46.495) Pub Date : 2020-09-21
    Un-Hyuck Kim; Geon-Tae Park; Byoung-Ki Son; Gyeong Won Nam; Jun Liu; Liang-Yin Kuo; Payam Kaghazchi; Chong S. Yoon; Yang-Kook Sun

    The demand for energy sources with high energy densities continues to push the limits of Ni-rich layered oxides, which are currently the most promising cathode materials in automobile batteries. Although most current research is focused on extending battery life using Ni-rich layered cathodes, long-term cycling stability using a full cell is yet to be demonstrated. Here, we introduce Li[Ni0.90Co0.09Ta0

    更新日期:2020-09-21
  • Increase in domestic electricity consumption from particulate air pollution
    Nat. Energy (IF 46.495) Pub Date : 2020-09-21
    Pan He; Jing Liang; Yueming (Lucy) Qiu; Qingran Li; Bo Xing

    Accurate assessment of environmental externalities of particulate air pollution is crucial to the design and evaluation of environmental policies. Current evaluations mainly focus on direct damages resulting from exposure, missing indirect co-damages that occur through interactions among the externalities, human behaviours and technologies. Our study provides an empirical assessment of such co-damages

    更新日期:2020-09-21
  • First-cycle voltage hysteresis in Li-rich 3 d cathodes associated with molecular O 2 trapped in the bulk
    Nat. Energy (IF 46.495) Pub Date : 2020-09-21
    Robert A. House; Gregory J. Rees; Miguel A. Pérez-Osorio; John-Joseph Marie; Edouard Boivin; Alex W. Robertson; Abhishek Nag; Mirian Garcia-Fernandez; Ke-Jin Zhou; Peter G. Bruce

    Li-rich cathode materials are potential candidates for next-generation Li-ion batteries. However, they exhibit a large voltage hysteresis on the first charge/discharge cycle, which involves a substantial (up to 1 V) loss of voltage and therefore energy density. For Na cathodes, for example Na0.75[Li0.25Mn0.75]O2, voltage hysteresis can be explained by the formation of molecular O2 trapped in voids

    更新日期:2020-09-21
  • Increase in household energy consumption due to ambient air pollution
    Nat. Energy (IF 46.495) Pub Date : 2020-09-21
    Jiyong Eom; Minwoo Hyun; Jaewoong Lee; Hyoseop Lee

    In response to acute environmental stresses such as air pollution, households may resort to quick and convenient adaptation measures that increase energy use, amplifying the environmental impact and requiring additional adaptation. This cycle of energy-intensive adaptation has so far received little consideration by the broader energy community. Here, we analyse the response of Korean households to

    更新日期:2020-09-21
  • Startups supported by ARPA-E were more innovative than others but an investment gap may remain
    Nat. Energy (IF 46.495) Pub Date : 2020-09-14
    Anna Goldstein; Claudia Doblinger; Erin Baker; Laura Díaz Anadón

    Startups funded by the US Advanced Research Projects Agency – Energy filed patents at twice the rate of similar cleantech firms. The high-risk high-reward funding model has succeeded in advancing energy technology, but more is needed to help these innovative firms cross the valley of death and bring new cleantech products to market.

    更新日期:2020-09-14
  • Interplay between temperature and bandgap energies on the outdoor performance of perovskite/silicon tandem solar cells
    Nat. Energy (IF 46.495) Pub Date : 2020-09-14
    Erkan Aydin; Thomas G. Allen; Michele De Bastiani; Lujia Xu; Jorge Ávila; Michael Salvador; Emmanuel Van Kerschaver; Stefaan De Wolf

    Perovskite/silicon tandem solar cells promise power conversion efficiencies beyond the Shockley–Queisser limit of single-junction devices; however, their actual outdoor performance is yet to be investigated. Here we fabricate 25% efficient two-terminal monolithic perovskite/silicon tandem solar cells and test them outdoors in a hot and sunny climate. We find that the temperature dependence of both

    更新日期:2020-09-14
  • Patenting and business outcomes for cleantech startups funded by the Advanced Research Projects Agency-Energy
    Nat. Energy (IF 46.495) Pub Date : 2020-09-14
    Anna Goldstein; Claudia Doblinger; Erin Baker; Laura Díaz Anadón

    Innovation to reduce the cost of clean technologies has large environmental and societal benefits. Governments can play an important role in helping cleantech startups innovate and overcome risks involved in technology development. Here we examine the impact of the US Advanced Research Projects Agency-Energy (ARPA-E) on two outcomes for startup companies: innovation (measured by patenting activity)

    更新日期:2020-09-14
  • Changing geography of clean tech
    Nat. Energy (IF 46.495) Pub Date : 2020-09-09
    Stine Haakonsson

    The landscape of the global clean energy industry is transforming, with many technology-following firms in developing countries rapidly catching up to — and potentially poised to overtake — leaders in the developed world. New analysis reveals a clearer picture of this changing geography of clean energy value chains over time.

    更新日期:2020-09-10
  • Mission Innovation is mission critical
    Nat. Energy (IF 46.495) Pub Date : 2020-09-08
    Zdenka Myslikova; Kelly Sims Gallagher

    The Paris Agreement’s Mission Innovation initiative to accelerate government spending on clean energy research is currently succeeding in its quest to support carbon mitigation. It should be renewed for an additional five years, with increased ambition, and changed to better integrate the private sector.

    更新日期:2020-09-08
  • Ambient-pressure and low-temperature upgrading of lignin bio-oil to hydrocarbons using a hydrogen buffer catalytic system
    Nat. Energy (IF 46.495) Pub Date : 2020-09-07
    Wei Liu; Wenqin You; Wei Sun; Weisheng Yang; Akshay Korde; Yutao Gong; Yulin Deng

    Catalytic hydrodeoxygenation is an essential step for bio-oil upgrading. However, hydrodeoxygenation usually requires a high hydrogen pressure and high temperature due to the good stability of the C–O bonds. Here we report an effective multiphase hydrodeoxygenation of lignin-based bio-oil at temperatures <100 °C and hydrogen pressures <1 atm using a synergetic catalyst system that consists of a low

    更新日期:2020-09-08
  • How to split an exciton
    Nat. Energy (IF 46.495) Pub Date : 2020-08-31
    Tracey M. Clarke

    Non-fullerene acceptors have enabled record power conversion efficiencies in organic solar cells, but it is unclear how they achieve efficient electron–hole separation. New research shows that extremely long exciton lifetimes are essential to ensure that charges are generated efficiently.

    更新日期:2020-08-31
  • The role of exciton lifetime for charge generation in organic solar cells at negligible energy-level offsets
    Nat. Energy (IF 46.495) Pub Date : 2020-08-31
    Andrej Classen; Christos L. Chochos; Larry Lüer; Vasilis G. Gregoriou; Jonas Wortmann; Andres Osvet; Karen Forberich; Iain McCulloch; Thomas Heumüller; Christoph J. Brabec

    Organic solar cells utilize an energy-level offset to generate free charge carriers. Although a very small energy-level offset increases the open-circuit voltage, it remains unclear how exactly charge generation is affected. Here we investigate organic solar cell blends with highest occupied molecular orbital energy-level offsets (∆EHOMO) between the donor and acceptor that range from 0 to 300 meV

    更新日期:2020-08-31
  • Effects of technology complexity on the emergence and evolution of wind industry manufacturing locations along global value chains
    Nat. Energy (IF 46.495) Pub Date : 2020-08-31
    Kavita Surana; Claudia Doblinger; Laura Diaz Anadon; Nathan Hultman

    Wind energy can contribute to national climate, energy and economic goals by expanding clean energy and supporting economies through new manufacturing industries. However, the mechanisms for achieving these interlinked goals are not well understood. Here we analyse the wind energy manufacturing global value chain, using a dataset on 389 component supplier firms (2006–2016) that work with 13 original

    更新日期:2020-08-31
  • A global analysis of the progress and failure of electric utilities to adapt their portfolios of power-generation assets to the energy transition
    Nat. Energy (IF 46.495) Pub Date : 2020-08-31
    Galina Alova

    The penetration of low-carbon technologies in power generation has challenged fossil-fuel-focused electric utilities. While the extant, predominantly qualitative, literature highlights diversification into renewables among possible adaptation strategies, comprehensive quantitative understanding of utilities’ portfolio decarbonization has been missing. This study bridges this gap, systematically quantifying

    更新日期:2020-08-31
  • The short-term costs of local content requirements in the Indian solar auctions
    Nat. Energy (IF 46.495) Pub Date : 2020-08-31
    Benedict Probst; Vasilios Anatolitis; Andreas Kontoleon; Laura Díaz Anadón

    Developing and emerging economies are implementing local content requirements to spur domestic manufacturing, though their costs and benefits are not well understood and difficult to quantify. Here, we provide an empirical assessment of the short-term costs of local content requirements using a credible counterfactual. We analyse data on government-run solar photovoltaic auctions held in India between

    更新日期:2020-08-31
  • Sacrificing nothing to reduce CO 2
    Nat. Energy (IF 46.495) Pub Date : 2020-08-24
    Tuo Wang; Jinlong Gong

    Photocatalytic systems for CO2 conversion to fuels tend to suffer from low selectivity, and sacrificial reagents or external bias are often required to make the reaction work. Now, a wireless and stand-alone photocatalyst device is demonstrated that converts CO2 and water into formate and O2 using solar energy without external bias.

    更新日期:2020-08-25
  • Molecularly engineered photocatalyst sheet for scalable solar formate production from carbon dioxide and water
    Nat. Energy (IF 46.495) Pub Date : 2020-08-24
    Qian Wang; Julien Warnan; Santiago Rodríguez-Jiménez; Jane J. Leung; Shafeer Kalathil; Virgil Andrei; Kazunari Domen; Erwin Reisner

    Harvesting solar energy to convert CO2 into chemical fuels is a promising technology to curtail the growing atmospheric CO2 levels and alleviate the global dependence on fossil fuels; however, the assembly of efficient and robust systems for the selective photoconversion of CO2 without sacrificial reagents and external bias remains a challenge. Here we present a photocatalyst sheet that converts CO2

    更新日期:2020-08-25
  • Operando decoding of chemical and thermal events in commercial Na(Li)-ion cells via optical sensors
    Nat. Energy (IF 46.495) Pub Date : 2020-08-24
    Jiaqiang Huang; Laura Albero Blanquer; Julien Bonefacino; E. R. Logan; Daniel Alves Dalla Corte; Charles Delacourt; Betar M. Gallant; Steven T. Boles; J. R. Dahn; Hwa-Yaw Tam; Jean-Marie Tarascon

    Monitoring the dynamic chemical and thermal state of a cell during operation is crucial to making meaningful advancements in battery technology as safety and reliability cannot be compromised. Here we demonstrate the feasibility of incorporating optical fibre Bragg grating sensors into commercial 18650 cells. By adjusting fibre morphologies, wavelength changes associated with both temperature and pressure

    更新日期:2020-08-25
  • Benefits and costs of a utility-ownership business model for residential rooftop solar photovoltaics
    Nat. Energy (IF 46.495) Pub Date : 2020-08-17
    Galen Barbose; Andrew J. Satchwell

    The rapid growth of rooftop solar photovoltaic systems can pose a number of financial challenges for electric utility shareholders and their customers. One potential pathway to resolving these perceived challenges involves allowing utilities to own and operate rooftop solar systems. However, the financial benefits and costs of this business model are not well understood. Here we model the financial

    更新日期:2020-08-18
  • Energy justice towards racial justice
    Nat. Energy (IF 46.495) Pub Date : 2020-08-14

    Black and African American people face systematic disadvantages in energy costs and limited access to renewable energy benefits. Addressing these disparities is an important part of achieving racial justice.

    更新日期:2020-08-14
  • Realizing high zinc reversibility in rechargeable batteries
    Nat. Energy (IF 46.495) Pub Date : 2020-08-14
    Lin Ma; Marshall A. Schroeder; Oleg Borodin; Travis P. Pollard; Michael S. Ding; Chunsheng Wang; Kang Xu

    Rechargeable zinc metal batteries (RZMBs) offer a compelling complement to existing lithium ion and emerging lithium metal batteries for meeting the increasing energy storage demands of the future. Multiple recent reports have suggested that optimized electrolytes resolve a century-old challenge for RZMBs by achieving extremely reversible zinc plating/stripping with Coulombic efficiencies (CEs) approaching

    更新日期:2020-08-14
  • Challenges and prospects for negawatt trading in light of recent technological developments
    Nat. Energy (IF 46.495) Pub Date : 2020-08-12
    Wayes Tushar; Tapan K. Saha; Chau Yuen; David Smith; Peta Ashworth; H. Vincent Poor; Subarna Basnet

    With the advancement of the smart grid, the current energy system is moving towards a future where people can buy what they need, can sell when they have excess and can trade the right of buying to other proactive consumers (prosumers). Although the first two schemes already exist in the market, selling the right of buying — also known as negawatt trading — is something that is yet to be implemented

    更新日期:2020-08-12
  • Five thermal energy grand challenges for decarbonization
    Nat. Energy (IF 46.495) Pub Date : 2020-08-10
    Asegun Henry; Ravi Prasher; Arun Majumdar

    Roughly 90% of the world’s energy use today involves generation or manipulation of heat over a wide range of temperatures. Here, we note five key applications of research in thermal energy that could help make significant progress towards mitigating climate change at the necessary scale and urgency.

    更新日期:2020-08-10
  • Diagnosing and correcting anode-free cell failure via electrolyte and morphological analysis
    Nat. Energy (IF 46.495) Pub Date : 2020-08-10
    A. J. Louli; A. Eldesoky; Rochelle Weber; M. Genovese; Matt Coon; Jack deGooyer; Zhe Deng; R. T. White; Jaehan Lee; Thomas Rodgers; R. Petibon; S. Hy; Shawn J. H. Cheng; J. R. Dahn

    Anode-free lithium metal cells store 60% more energy per volume than conventional lithium-ion cells. Such high energy density can increase the range of electric vehicles by approximately 280 km or even enable electrified urban aviation. However, these cells tend to experience rapid capacity loss and short cycle life. Furthermore, safety issues concerning metallic lithium often remain unaddressed in

    更新日期:2020-08-10
  • Molecular engineering of dispersed nickel phthalocyanines on carbon nanotubes for selective CO 2 reduction
    Nat. Energy (IF 46.495) Pub Date : 2020-08-10
    Xiao Zhang; Yang Wang; Meng Gu; Maoyu Wang; Zisheng Zhang; Weiying Pan; Zhan Jiang; Hongzhi Zheng; Marcos Lucero; Hailiang Wang; George E. Sterbinsky; Qing Ma; Yang-Gang Wang; Zhenxing Feng; Jun Li; Hongjie Dai; Yongye Liang

    Electrochemical reduction of CO2 is a promising route for sustainable production of fuels. A grand challenge is developing low-cost and efficient electrocatalysts that can enable rapid conversion with high product selectivity. Here we design a series of nickel phthalocyanine molecules supported on carbon nanotubes as molecularly dispersed electrocatalysts (MDEs), achieving CO2 reduction performances

    更新日期:2020-08-10
  • Quantification beyond expenditure
    Nat. Energy (IF 46.495) Pub Date : 2020-08-07
    Harriet Thomson

    The use of energy expenditure thresholds for quantifying energy poverty is a widely used approach, particularly within the Global North. New research from Hong Kong confirms that this method risks overlooking important housing and climate-related factors.

    更新日期:2020-08-08
  • Impacts of climate change on energy systems in global and regional scenarios
    Nat. Energy (IF 46.495) Pub Date : 2020-08-03
    Seleshi G. Yalew; Michelle T. H. van Vliet; David E. H. J. Gernaat; Fulco Ludwig; Ariel Miara; Chan Park; Edward Byers; Enrica De Cian; Franziska Piontek; Gokul Iyer; Ioanna Mouratiadou; James Glynn; Mohamad Hejazi; Olivier Dessens; Pedro Rochedo; Robert Pietzcker; Roberto Schaeffer; Shinichiro Fujimori; Shouro Dasgupta; Silvana Mima; Silvia R. Santos da Silva; Vaibhav Chaturvedi; Robert Vautard; Detlef

    Although our knowledge of climate change impacts on energy systems has increased substantially over the past few decades, there remains a lack of comprehensive overview of impacts across spatial scales. Here, we analyse results of 220 studies projecting climate impacts on energy systems globally and at the regional scale. Globally, a potential increase in cooling demand and decrease in heating demand

    更新日期:2020-08-03
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