Transition metal oxides for bifunctional ORR/OER electrocatalysis in unitized regenerative fuel cells

IF 4.5 3区化学 Q1 Chemical Engineering

Journal of Electroanalytical Chemistry Pub Date : 2023-08-07 DOI:10.1016/j.jelechem.2023.117709

Dušan Mladenović , Ana Mladenović , Diogo M.F. Santos , Ayşe B. Yurtcan , Šćepan Miljanić , Slavko Mentus , Biljana Šljukić

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引用次数: 1

Abstract

Among many alternatives to fossil fuel-based energy systems, one of the most promising is based on hydrogen energy and its production and use in unitized regenerative fuel cells as the primary energy conversion devices. However, there are some setbacks and challenges when designing suitable and efficient electrocatalysts for these devices. The most effective and durable catalysts are based on platinum–group metals, with low abundance and unbearably high prices. Many attempts were undertaken to overcome this setback by designing catalysts suitable for massive commercial use. This review paper focuses on recent advances in developing bifunctional catalysts for oxygen reduction and oxygen evolution catalysis in alkaline media, based on abundant transition metal oxides (TMOs): MnO₂, NiO, and TiO₂. The problem of unifying parameters to compare the effectiveness of different electrocatalysts is emphasized. This review discusses the most promising alternative bifunctional electrocatalysts by comparing the performance of TMOs with some precious metal catalysts used as benchmarks.

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过渡金属氧化物用于组合式再生燃料电池双功能ORR/OER电催化

在以化石燃料为基础的能源系统的许多替代方案中，最有前途的一种是基于氢能及其生产和使用的组合式可再生燃料电池作为主要的能源转换装置。然而，在为这些装置设计合适和高效的电催化剂时，存在一些挫折和挑战。最有效、最耐用的催化剂是基于铂族金属的催化剂，其丰度低，价格高得令人难以忍受。为了克服这一挫折，人们进行了许多尝试，设计出适合大规模商业使用的催化剂。本文综述了基于MnO2、NiO和TiO2等过渡金属氧化物的碱性介质中氧还原和析氧双功能催化剂的研究进展。强调了统一参数比较不同电催化剂效能的问题。本文通过与一些贵金属催化剂的性能比较，讨论了最有前途的双功能电催化剂。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Electroanalytical Chemistry Chemical Engineering-General Chemical Engineering

CiteScore

7.50

自引率

6.70%

发文量

912

审稿时长

>12 weeks

期刊介绍： The Journal of Electroanalytical Chemistry is the foremost international journal devoted to the interdisciplinary subject of electrochemistry in all its aspects, theoretical as well as applied. Electrochemistry is a wide ranging area that is in a state of continuous evolution. Rather than compiling a long list of topics covered by the Journal, the editors would like to draw particular attention to the key issues of novelty, topicality and quality. Papers should present new and interesting electrochemical science in a way that is accessible to the reader. The presentation and discussion should be at a level that is consistent with the international status of the Journal. Reports describing the application of well-established techniques to problems that are essentially technical will not be accepted. Similarly, papers that report observations but fail to provide adequate interpretation will be rejected by the Editors. Papers dealing with technical electrochemistry should be submitted to other specialist journals unless the authors can show that their work provides substantially new insights into electrochemical processes.