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  • Creating active interfaces as a strategy to improve electrochemical water splitting reactions
    J. Phys. Energy Pub Date : 2020-08-17
    Anthony P O’Mullane

    Electrochemical water splitting has received significant attention recently for the production of green hydrogen as a means to alleviate our need on fossil fuels. There has been immense progress on developing new catalysts that are active for the hydrogen evolution reaction (HER), the oxygen evolution reaction (OER) as well as materials that are bifunctional and are active for both reactions. In this

    更新日期:2020-08-31
  • Distribution (function) of relaxation times, successor to complex nonlinear least squares analysis of electrochemical impedance spectroscopy?
    J. Phys. Energy Pub Date : 2020-08-17
    Bernard A Boukamp

    Electrochemical impedance spectroscopy (EIS) and complex nonlinear least squares (CNLS) analysis with an equivalent circuit (EqC) has been the standard research tool in Solid State Electrochemistry for many decades. With an ever increasing interest in the development of energy related materials with complex structures, the impedance spectra are becoming too complex for a simple CNLS-analysis. Inversion

    更新日期:2020-08-31
  • MXene for high energy and power density: a perspective
    J. Phys. Energy Pub Date : 2020-08-17
    Chengxiang Wang, Xianfen Wang, Luyuan Zhang and Longwei Yin

    MXenes as a family of unique 2D materials with high conductivity, atomic thickness, redoxable property and plenty of surface groups have been extensively explored for energy storage. Energy and power densities are always increasing along with the development of controllable synthesis, surface chemical groups and microstructure regulations. Herein, we reviewed present progresses in MXene-based materials

    更新日期:2020-08-31
  • Hydrogen evolution on non-metal oxide catalysts
    J. Phys. Energy Pub Date : 2020-08-12
    Stephen Rhatigan, Marie-Clara Michel and Michael Nolan

    Water splitting to produce hydrogen gas, using renewably produced electricity (electrocatalysis) or by direct conversion of solar energy (photocatalysis), is a strategy that addresses key environmental and energy challenges. The overall water splitting reaction proceeds as two half reactions, namely the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), each of which require catalysts

    更新日期:2020-08-31
  • 2020 roadmap on solid-state batteries
    J. Phys. Energy Pub Date : 2020-08-05
    Mauro Pasta, David Armstrong, Zachary L. Brown, Junfu Bu, Martin R Castell, Peiyu Chen, Alan Cocks, Serena A Corr, Edmund J Cussen, Ed Darnbrough, Vikram Deshpande, Christopher Doerrer, Matthew S Dyer, Hany El-Shinawi, Norman Fleck, Patrick Grant, Georgina L. Gregory, Chris Grovenor, Laurence J Hardwick, John T S Irvine, Hyeon Jeong Lee, Guanchen Li, Emanuela Liberti, Innes McClelland, Charles Monroe

    Li-ion batteries have revolutionized the portable electronics industry and empowered the electric vehicle (EV) revolution. Unfortunately, traditional Li-ion chemistry is approaching its physicochemical limit. The demand for higher density (longer range), high power (fast charging), and safer EVs has recently created a resurgence of interest in solid state batteries (SSB). Historically, research has

    更新日期:2020-08-31
  • Quick-start guide for first-principles modelling of point defects in crystalline materials
    J. Phys. Energy Pub Date : 2020-07-30
    Sunghyun Kim, Samantha N Hood, Ji-Sang Park, Lucy D Whalley and Aron Walsh

    Defects influence the properties and functionality of all crystalline materials. For instance, point defects participate in electronic (e.g. carrier generation and recombination) and optical (e.g. absorption and emission) processes critical to solar energy conversion. Solid-state diffusion, mediated by the transport of charged defects, is used for electrochemical energy storage. First-principles calculations

    更新日期:2020-08-31
  • Review of ZnSnN 2 semiconductor material
    J. Phys. Energy Pub Date : 2020-07-20
    Imran S. Khan, Karen N. Heinselman and Andriy Zakutayev

    Zinc tin nitride (ZnSnN 2 ) is one of the emerging ternary nitride semiconductors considered for photovoltaic device applications due to its attractive and tunable material properties and earth abundance of constituent elements. Computational predictions of the material properties sparked experimental synthesis efforts, and currently there are a number of groups involved in ZnSnN 2 research. In this

    更新日期:2020-08-31
  • A systematical ab-initio review of promising 2D MXene monolayers towards Li-ion battery applications
    J. Phys. Energy Pub Date : 2020-07-15
    Uğur Yorulmaz, İlker Demiroğlu, Deniz Çakir, Oğuz Gülseren and Cem Sevik

    Two-dimensional materials have been attracting increasing interests because of their outstanding properties for Lithium-ion battery applications. In particular, a material family called MXenes (M n+1 C n , where n = 1, 2, 3) have been recently attracted immense interest in this respect due to their incomparable fast-charging properties and high capacity promises. In this article, we review the state-of-the-art

    更新日期:2020-08-31
  • Reversible and irreversible processes during cyclic voltammetry of an electrodeposited manganese oxide as catalyst for the oxygen evolution reaction
    J. Phys. Energy Pub Date : 2020-07-15
    Javier Villalobos, Ronny Golnak, Lifei Xi, Götz Schuck and Marcel Risch

    Manganese oxides have received much attention over the years among the wide range of electrocatalysts for the oxygen evolution reaction (OER) due to their low toxicity, high abundance and rich redox chemistry. While many previous studies focused on the activity of these materials, a better understanding of the material transformations relating to activation or degradation is highly desirable, both

    更新日期:2020-08-31
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