气候变化领域集成服务门户(CCPortal): Towards a generic understanding of oxygen evolution reaction kinetics in polymer electrolyte water electrolysis

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DOI	10.1039/d0ee00673d
	Towards a generic understanding of oxygen evolution reaction kinetics in polymer electrolyte water electrolysis
	Schuler T.; Kimura T.; Schmidt T.J.; Büchi F.N.
发表日期	2020
ISSN	1754-5692
起始页码	2153
结束页码	2166
卷号	13 期号:7
英文摘要	Water electrolysis is a key technology for future energy systems intended for the storage of fluctuating renewables and green industrial product upgrading. Under acidic electrolysis conditions, the oxygen evolution reaction (OER) predominantly causes the overpotential loss, which makes the elucidation of OER kinetics a task of key importance for future catalyst development. Herein, we design a methodology based on vapor-fed polymer electrolyte water electrolysis to fully characterize OER kinetics in the real environment of solid electrolytes and realize the controlled benchmarking of catalysts in the absence of gas passivation commonly observed in liquid-electrolyte half-cell configurations. Vapor-fed cells, allowing for distinct manipulation of water activity, sustain the essential degree of freedom to resolve and determine all four essential kinetic parameters. Thus, this work provides valuable insights into the OER mechanism, isolates the rate-determining step, and experimentally determines the reaction order of the state-of-the-art OER catalyst IrO2/TiO2 with respect to water. Through the combination of gas and liquid fed kinetic analysis, we elucidate the important missing link for formulating the generic governing relation for the OER overpotential and thereby providing a method for benchmarking of catalyst activities under technically representative conditions. © 2020 The Royal Society of Chemistry.
语种	英语
scopus关键词	Benchmarking; Catalyst activity; Degrees of freedom (mechanics); Electrolysis; Green manufacturing; Kinetics; Molecular biology; Oxygen; Oxygen evolution reaction; Reaction kinetics; Solid electrolytes; Degree of freedom; Industrial product; Liquid electrolytes; Oxygen evolution reaction (oer); Polymer electrolyte; Rate determining step; Real environments; Water electrolysis; Polyelectrolytes; concentration (composition); electrochemistry; electrolyte; oxygen; polymer; reaction kinetics
来源期刊	Energy and Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/162748
作者单位	Electrochemistry Laboratory, Paul Scherrer Institut Email:, Villigen PSI, CH-5232, Switzerland; Fuel Cell Nanomaterials Center, University of Yamanashi, 6-43 Miyamae-cho, Kofu, 400-0021, Japan; Laboratory of Physical Chemistry, ETH Zürich, Zürich, CH-8093, Switzerland
推荐引用方式 GB/T 7714	Schuler T.,Kimura T.,Schmidt T.J.,et al. Towards a generic understanding of oxygen evolution reaction kinetics in polymer electrolyte water electrolysis[J],2020,13(7).
APA	Schuler T.,Kimura T.,Schmidt T.J.,&Büchi F.N..(2020).Towards a generic understanding of oxygen evolution reaction kinetics in polymer electrolyte water electrolysis.Energy and Environmental Science,13(7).
MLA	Schuler T.,et al."Towards a generic understanding of oxygen evolution reaction kinetics in polymer electrolyte water electrolysis".Energy and Environmental Science 13.7(2020).