Challenges and strategies of chlorine inhibition in anode systems for seawater electrolysis  

作　　者：Chuqiang Huang Zhouzhou Wang Shaojun Cheng Yunpeng Liu Binglu Deng Shaoyi Xu Luo Yu Ying Yu 

机构地区：[1]School of Materials Science and Hydrogen Energy,Foshan University,Foshan 528000,China [2]Institute of Nanoscience and Nanotechnology,College of Physical Science and Technology,Central China Normal University,Wuhan 430079,China [3]Department of Physics and Texas Center for Superconductivity at the University of Houston(TcSUH),University of Houston,Houston,TX 77204,USA [4]Laboratory of Solar Fuel,Faculty of Materials Science and Chemistry,China University of Geosciences,Wuhan 430074,China

出　　处：《Science China Chemistry》2024年第10期3198-3208,共11页中国科学（化学英文版）

基　　金：supported by the National Key Research and Development Program of China(2022YFB3803600);the National Natural Science Foundation of China(U20A20246,22309168);Fundamental Research Funds for the Central Universities(CCNU22CJ017)。

摘　　要：Seawater electrolysis for green hydrogen production is one of the key technologies for achieving carbon neutrality.However,in anode systems,the chloride ions(Cl^(-))in seawater will trigger an undesired chlorine evolution reaction(CER)that competes with an oxygen evolution reaction(OER),resulting in inferior OER activity and selectivity.Besides,the corrosive Cl^(-)and its derivative products will corrode anodes during seawater electrolysis,leading to poor stability.Therefore,great efforts have been devoted to developing efficient strategies for chlorine inhibition to improve the activity,selectivity,and stability of anode materials.Herein,focusing on chlorine inhibition,we present a mini review to comprehensively and concisely summarize the recent progress in anode systems for boosting seawater electrolysis.In particular,two strategies of physical and chemical regulation to inhibit Cl^(-)are summarized in some representative cases.Finally,some challenges and future opportunities in anode systems for seawater electrolysis are prospected.This mini review aims to shed light on designing highly efficient anode materials for seawater electrolysis.

关 键 词：seawater electrolysis anode systems chlorine inhibition physical regulation chemical regulation 

分 类 号：TQ116.2[化学工程—无机化工]