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首页> 外文期刊>Journal of power sources >High performance fluorine doped (Sn,Ru)O_2 oxygen evolution reaction electro-catalysts for proton exchange membrane based water electrolysis
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High performance fluorine doped (Sn,Ru)O_2 oxygen evolution reaction electro-catalysts for proton exchange membrane based water electrolysis

机译:质子交换膜水电解用高性能掺氟(Sn,Ru)O_2制氧反应电催化剂

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摘要

Identification of electro-catalysts containing non-noble metal or significantly reduced amounts of expensive noble metals (e.g. RUO_2) is highly desirable. Development of such a catalyst with comparable electrochemical performance to the standard noble metal oxide for proton exchange membrane (PEM) based water electrolysis would constitute a pioneering breakthrough in hydrogen generation by water electrolysis. In line with these goals, by exploiting a two-pronged theoretical first principles and experimental approach herein we demonstrate that a nano-structured solid solution of SnO_2:10 wt% F containing only 20 at.% RUO_2 [e.g. (Sno.8oRuo.2o)O_2:10F] displays a remarkably similar electrochemical activity and moreover, comparable or even much improved electrochemical stability and durability compared to pure the noble metal counterpart, RuO_2. Density functional theory calculations have demonstrated direct dependence of the catalytic activity on the electronic structure peculiarities of the F-doped (Ru,Sn)O_2 which corresponds well with the experimental results.
机译:非常需要鉴定包含非贵金属或显着减少量的昂贵贵金属(例如RUO_2)的电催化剂。研发出与基于质子交换膜(PEM)的水电解用的标准贵金属氧化物具有可比的电化学性能的这种催化剂,将构成水电解制氢的开创性突破。符合这些目标,通过在本文中采用两方面的理论第一原理和实验方法,我们证明了SnO_2:10 wt%F的纳米结构固溶体仅包含20 at。%RUO_2 [e.g. (Sno.8Ru.2o)O_2:10F]显示出非常相似的电化学活性,而且与纯贵金属RuU_2相比,具有相当甚至更高的电化学稳定性和耐久性。密度泛函理论计算表明,催化活性与F掺杂(Ru,Sn)O_2的电子结构特性直接相关,与实验结果吻合良好。

著录项

  • 来源
    《Journal of power sources》 |2014年第1期|362-370|共9页
  • 作者单位

    Department of Chemical and Petroleum Engineering, Swanson School of Engineering, University of Pittsburgh, PA 15261, USA;

    Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, PA 15261, USA,Center for Complex Engineered Multifunctional Materials, University of Pittsburgh, PA 15261, USA;

    Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, PA 15261, USA,Center for Complex Engineered Multifunctional Materials, University of Pittsburgh, PA 15261, USA;

    Department of Chemical and Petroleum Engineering, Swanson School of Engineering, University of Pittsburgh, PA 15261, USA;

    Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, PA 15261, USA;

    Department of Mechanical Engineering and Materials Science, Swanson School of Engineering, University of Pittsburgh, PA 15261, USA;

    Department of Chemical and Petroleum Engineering, Swanson School of Engineering, University of Pittsburgh, PA 15261, USA,Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, PA 15261, USA,Center for Complex Engineered Multifunctional Materials, University of Pittsburgh, PA 15261, USA,Department of Mechanical Engineering and Materials Science, Swanson School of Engineering, University of Pittsburgh, PA 15261, USA,School of Dental Medicine, University of Pittsburgh, PA 15217, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Oxygen evolution; Electrolysis; Electro-catalysts; Noble metal; Oxygen evolution reaction; Fuel cells;

    机译:氧气释放;电解;电催化剂;贵金属析氧反应燃料电池;

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