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Ni-Metalloid (B, Si, P, As, and Te) Alloys as Water Oxidation Electrocatalysts

机译：镍金属（B，Si，P，As和Te）合金作为水氧化电催化剂

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摘要

Breakthroughs toward effective water-splitting electrocatalysts for mass hydrogen production will necessitate material design strategies based on unexplored material chemistries. Herein, Ni-metalloid (B, Si, P, As, Te) alloys are reported as an emergent class of highly promising electrocatalysts for the oxygen evolution reaction (OER) and insight is offered into the origin of activity enhancement on the premise of the surface electronic structure, the OER activation energy, influence of the guest metalloid elements on the lattice structure of the host metal (Ni), and surface-oxidized metalloid oxoanions. The metalloids modify the lattice structure of Ni, causing changes in the nearest Ni-Ni interatomic distance (d(Ni-Ni)). The activation energy E-a scales with d(Ni-Ni) indicating an apparent dependence of the OER activity on lattice properties. During the OER, surface Ni atoms are oxidized to nickel oxyhydroxide, which is the active state of the catalyst, meanwhile, the surface metalloids are oxidized to the corresponding oxoanions that affect the interfacial electrode/electrolyte properties and hence the adsorption/desorption interaction energies of the reacting species.
机译：大规模生产氢气的有效水分解电催化剂的突破将需要基于未探索的材料化学的材料设计策略。在本文中，据报道，Ni-准金属（B，Si，P，As，Te）合金是一类新兴的极有前途的氧放出反应（OER）电催化剂，在此前提下，我们可以洞悉活性增强的起源。表面电子结构，OER活化能，客体准金属元素对主体金属（Ni）的晶格结构的影响以及表面氧化的准金属氧阴离子。准金属修饰Ni的晶格结构，从而导致最近的Ni-Ni原子间距离（d（Ni-Ni））发生变化。活化能E-a与d（Ni-Ni）成比例，表明OER活性明显依赖于晶格性质。在OER过程中，表面Ni原子被氧化为羟基氧化镍，这是催化剂的活性状态，同时，表面准金属被氧化为相应的含氧阴离子，从而影响界面电极/电解质的性质，从而影响吸附/解吸相互作用能。反应物种。

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  • 来源
    《Advanced energy materials》 |2019年第26期|1900796.1-1900796.8|共8页
  • 作者

    Masa Justus; Piontek Stefan; Wilde Patrick; Antoni Hendrik; Eckhard Till; Chen Yen-Ting; Muhler Martin; Apfel Ulf-Peter; Schuhmann Wolfgang;

  • 作者单位

    Ruhr Univ Bochum, Fac Chem & Biochem, Analyt Chem Ctr Electrochem Sci CES, D-44780 Bochum, Germany;

    Ruhr Univ Bochum, Fac Chem & Biochem, Bioinorgan Chem, Inorgan Chem 1, D-44801 Bochum, Germany;

    Ruhr Univ Bochum, Fac Chem & Biochem, Analyt Chem Ctr Electrochem Sci CES, D-44780 Bochum, Germany;

    Ruhr Univ Bochum, Fac Chem & Biochem, Lab Ind Chem, D-44780 Bochum, Germany;

    Ruhr Univ Bochum, Fac Chem & Biochem, Lab Ind Chem, D-44780 Bochum, Germany;

    Ruhr Univ Bochum, Fac Chem & Biochem, Analyt Chem Ctr Electrochem Sci CES, D-44780 Bochum, Germany;

    Ruhr Univ Bochum, Fac Chem & Biochem, Lab Ind Chem, D-44780 Bochum, Germany;

    Ruhr Univ Bochum, Fac Chem & Biochem, Bioinorgan Chem, Inorgan Chem 1, D-44801 Bochum, Germany|Fraunhofer UMSICHT, Osterfelder Str 3, D-46047 Oberhausen, Germany;

    Ruhr Univ Bochum, Fac Chem & Biochem, Analyt Chem Ctr Electrochem Sci CES, D-44780 Bochum, Germany;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    electrocatalysis; nickel arsenide; nickel phosphide; nickel-metalloid alloys; water oxidation;

    机译：电殖分析;镍砷;磷化镍;镍金属合金;水氧化;

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