Cutting-edge methods for amplifying the oxygen evolution reaction during seawater electrolysis: a brief synopsis

Industrial Chemistry & Materials Pub Date : 2023-08-17 DOI:10.1039/D3IM00071K

Xiang Lyu and Alexey Serov

{"title":"Cutting-edge methods for amplifying the oxygen evolution reaction during seawater electrolysis: a brief synopsis","authors":"Xiang Lyu and Alexey Serov","doi":"10.1039/D3IM00071K","DOIUrl":null,"url":null,"abstract":"Electrochemical water splitting has been considered a clean and continual way for hydrogen (H2) production. Direct seawater electrolysis is a potentially attractive technology due to the ample access to seawater and scarce freshwater resources in some regions. However, the presence of impurities (e.g., Cl−, Mg2+) and the resulting corrosion and side reactions, such as the chloride oxidation reaction (ClOR), makes seawater electrocatalysis more challenging than that of fresh or alkaline water due to competition with the oxygen evolution reaction (OER) at the anode. Consequently, much effort has been devoted to developing approaches to enhance OER performance and suppress the ClOR. In this minireview, we summarize three general strategies for enhancing OER activity and selectivity in seawater electrolysis based on three different concepts: (1) the sole development of robust and high-performance OER catalysts in pure seawater electrolytes, (2) the introduction of additives to seawater electrolytes (e.g., alkalis and/or salts without chloride) to enhance the potential equilibrium gap between the ClOR and OER in combination with regular highly active OER catalysts, and (3) a combination of approaches (1) and (2). Finally, the current challenges and potential opportunities for green H2 production from seawater electrolysis are briefly presented.Keywords: Electrochemical seawater splitting; Alkaline seawater electrolysis; Oxygen evolution reaction; Hydrogen production; Electrocatalysts.","PeriodicalId":29808,"journal":{"name":"Industrial Chemistry & Materials","volume":" 4","pages":" 475-485"},"PeriodicalIF":0.0000,"publicationDate":"2023-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2023/im/d3im00071k?page=search","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Industrial Chemistry & Materials","FirstCategoryId":"1085","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2023/im/d3im00071k","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 1

Abstract

Electrochemical water splitting has been considered a clean and continual way for hydrogen (H₂) production. Direct seawater electrolysis is a potentially attractive technology due to the ample access to seawater and scarce freshwater resources in some regions. However, the presence of impurities (e.g., Cl⁻, Mg²⁺) and the resulting corrosion and side reactions, such as the chloride oxidation reaction (ClOR), makes seawater electrocatalysis more challenging than that of fresh or alkaline water due to competition with the oxygen evolution reaction (OER) at the anode. Consequently, much effort has been devoted to developing approaches to enhance OER performance and suppress the ClOR. In this minireview, we summarize three general strategies for enhancing OER activity and selectivity in seawater electrolysis based on three different concepts: (1) the sole development of robust and high-performance OER catalysts in pure seawater electrolytes, (2) the introduction of additives to seawater electrolytes (e.g., alkalis and/or salts without chloride) to enhance the potential equilibrium gap between the ClOR and OER in combination with regular highly active OER catalysts, and (3) a combination of approaches (1) and (2). Finally, the current challenges and potential opportunities for green H₂ production from seawater electrolysis are briefly presented.

Keywords: Electrochemical seawater splitting; Alkaline seawater electrolysis; Oxygen evolution reaction; Hydrogen production; Electrocatalysts.

Abstract Image

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

放大海水电解过程中析氧反应的前沿方法:简要概述

电化学水分解被认为是一种清洁、连续的制氢方法。海水直接电解是一种潜在的有吸引力的技术，因为在一些地区海水资源充足，淡水资源稀缺。然而，杂质(如Cl−，Mg2+)的存在以及由此产生的腐蚀和副反应，如氯化物氧化反应(ClOR)，由于与阳极的析氧反应(OER)竞争，使得海水电催化比淡水或碱性水更具挑战性。因此，人们致力于开发提高OER性能和抑制ClOR的方法。在这篇综述中，我们基于三个不同的概念，总结了提高海水电解中OER活性和选择性的三种一般策略:(1)在纯海水电解质中单独开发坚固和高性能的OER催化剂;(2)在海水电解质中引入添加剂(例如，碱和/或不含氯化物的盐)，以结合常规的高活性OER催化剂来增强ClOR和OER之间的潜在平衡间隙;(3)方法(1)和(2)的组合。简要介绍了目前海水电解绿色制氢的挑战和潜在机遇。关键词:电化学海水分解;碱性海水电解;析氧反应;制氢;Electrocatalysts。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

Industrial Chemistry & Materials chemistry, chemical engineering, functional materials, energy, etc.-

自引率

0.00%

发文量

期刊介绍： Industrial Chemistry & Materials (ICM) publishes significant innovative research and major technological breakthroughs in all aspects of industrial chemistry and materials, with a particular focus on the important innovation of low-carbon chemical industry, energy and functional materials. By bringing researchers, engineers, and policymakers into one place, research is inspired, challenges are solved and the applications of science and technology are accelerated. The global editorial and advisory board members are valued experts in the community. With their support, the rigorous editorial practices and dissemination ensures your research is accessible and discoverable on a global scale. Industrial Chemistry & Materials publishes: ● Communications ● Full papers ● Minireviews ● Reviews ● Perspectives ● Comments

期刊最新文献

Back cover Back cover Membrane-free sequential paired electrosynthesis of 1,4-hydroquinone from phenol over a self-supported electrocatalytic electrode Back cover Toward a low-cost uranium-adsorbing material based on nonwoven fabrics and photografting technology†