As the quest for carbon neutral processes grows with the prominence of global warming becoming clear, electrochemical CO2 reduction is proving to be a promising technique to not only remove CO2 from the atmosphere but also produce hydrocarbons in a carbon neutral way. (1) This has the additional benefit of enabling excess renewable energy from solar, hydro, and wind sources to be stored in hydrocarbons

Li-rich layered oxides are promising cathode candidates for high-energy-density Li-ion batteries because of the combination of cationic and anionic redox activities. However, severe lattice oxygen loss inevitably induces irreversible Li migration in both transition metal (TM) and Li layers, which degrades the stability of the Li–O–Li configuration, resulting in serious structure distortion and capacity

We report on the reversible, electrochemical (de)fluorination of CsMnFeF6 at room temperature using a liquid electrolyte. CsMnFeF6 was synthesized via three methods (hydrothermal, ceramic, and mechanochemical), each of which yields products in a defect pyrochlore structure with varying particle sizes and phase purities. After three galvanostatic cycles, approximately one fluoride ion can be reversibly

Advancing the performance of a wide variety of energy conversion devices─from photovoltaic and photoelectrochemical to thermoelectric and electroluminescent─requires the fundamental development of semiconductor materials. The present day is an exciting time in this respect. Indeed, innovations with inorganic (e.g., oxide (1,2) or chalcogenide (3,4)), organic (e.g., conjugated polymer (5,6) or small

Monolithic two-terminal (2T) perovskite/CuInSe2 (CIS) tandem solar cells (TSCs) combine the promise of an efficient tandem photovoltaic (PV) technology with the simplicity of an all-thin-film device architecture that is compatible with flexible and lightweight PV. In this work, we present the first-ever 2T perovskite/CIS TSC with a power conversion efficiency (PCE) approaching 25% (23.5% certified

K metal disk electrodes, prepared by putting a chunk of K metal in a 1,2-dimethoxyethane (DME) solution containing potassium bis(fluorosulfonyl)amide (KFSA) and 1,3,2-dioxathiolane 2,2-dioxide (DTD), exhibited suppressed polarization and interfacial resistance in continuous metal stripping–deposition reactions of a symmetric half-cell comprising a cross-linked polymer electrolyte. This simple and effective

We demonstrated the activation energy approach to evaluate oxygen evolution performance and to probe active site reconstruction at different potentials. Activation energies are acquired following the Arrhenius equation by monitoring the current densities under varied hydroxide concentrations and temperatures. Our complex oxide electrocatalysts (Ag- and Ce-bidoped iron manganese oxyhydroxide) exhibit

The geological storage of hydrogen is necessary to enable the successful transition to a hydrogen economy and achieve net-zero emissions targets. Comprehensive investigations must be undertaken for each storage site to ensure their long-term suitability and functionality. As such, the systematic infrastructure and potential risks of large-scale hydrogen storage must be established. Herein, we conducted

Halide double perovskites, A2MIMIIIX6, offer a vast chemical space for obtaining unexplored materials with exciting properties for a wide range of applications. The photovoltaic performance of halide double perovskites has been limited due to the large and/or indirect bandgap of the presently known materials. However, their applications extend beyond outdoor photovoltaics, as halide double perovskites

Figure 1. Electrification of industrial and transportation sectors teamed with the decarbonization of electricity generation is one of the critical routes toward the realization of a low-carbon future. Electrochemical energy systems hold the potential to address the challenges associated with intermittent renewable energy generation. Energy Storage is also intricately connected to the three pillars

Page 1730. In the original Energy Focus article, the area referenced for the standard M10 silicon cell size was incomplete. In the paragraph beginning “For perovskite–silicon tandem technologies...”, near the end of the first sentence, “M10 (399.98 cm2)” should instead read as follows: “M10 (330.1 cm2 given the widely adopted 182 cm wafer size definition of M10, or 399.98 cm2 using the less-common

Nature has been at the forefront of optimizing efficient light energy conversion and energy transduction models in the photosynthetic complex. Inspired by nature, underpinning mechanistic aspects of excited-state energy-transfer processes in assemblies of chromophoric systems, perovskites, and semiconductor materials are of great interest in energy research. However, a comprehensive understanding of

Lithium-ion batteries (LIBs) have become an integral part of our lives. The exponential growth in the commercial success of LIBs has been reciprocated in the various research areas related to LIBs. In LIB research, several sub-research areas can be identified as electrode material development, electrolyte and separator development, cell optimization, battery system management, etc. For the development

The global battery market was valued at 120.4 billion USD in 2020 and is estimated to continuously grow to 279.7 billion USD by 2027 at a compound annual growth rate of 12.8%. (1) This growth is mostly attributed to the expansion of the front industries, such as the electric vehicle (EV) and energy storage system sectors, which require much larger batteries than the portable electronic device sector

Figure 1. (a–c) Device configurations of single-junction PVSK cells (a), single-junction CIGS cells (b), and 2T PVSK/CIGS tandem cells (c). (d) Comparison of manufacturing costs for these three modules. Figure 2. (a–c) Independent impact of lifetime (a), module efficiency (b), and material cost (c) on the LCOE for three modules. (d–f) Combined impact of module efficiency and lifetime on the LCOE for