In-situ regeneration of Bi^(0) active site to renew surface activation for long-term stable and efficient CO_(2)-to-formate electrosynthesis  

作　　者：Haichuan He Congcheng Yang Liu Deng Li Luo Yahui Jiang Liqiang Wang Yi Zhang Minghui Yang You-Nian Liu 

机构地区：[1]Hunan Provincial Key Laboratory of Micro&Nano Materials Interface Science,College of Chemistry and Chemical Engineering,Central South University,Changsha 410083,Hunan,China [2]College of Material,Chemistry and Chemical Engineering,Hangzhou Normal University,Hangzhou 311121,Zhejiang,China [3]Henan Province Industrial Technology Research Institute of Resources and Materials,School of Material Science and Engineering,Zhengzhou University,Zhengzhou University,Zhengzhou 450001,Henan,China

出　　处：《Journal of Energy Chemistry》2024年第12期703-711,共9页能源化学（英文版）

基　　金：supported by the National Natural Science Foundation of China(22238013 and 22178393);Postdoctoral Science Foundation of Central South University(320808);Natural Science Foundation of Hunan Province(2023JJ40706);the High Performance Computing Center of Central South University。

摘　　要：CO_(2)-to-formate electrosynthesis with high selectivity and stability has been a long-sought objective.Unfortunately,most catalysts undergo structural and valence state changes due to surface oxidation during operation or storage,resulting in decreased catalytic performance.Herein,we report a efficient and stable BiIn@Cu-foam electrode through the in-situ regeneration of Bi^(0) active sites to renew the surface activation.The electronic structure of Bi site can be regulated by introducing In,thereby enhancing the adsorption strength of*OCHO.The optimized electrode exhibits over 90%FE_(formate)at a wide potential window(-0.9–-2.2 V),and formation rate for 3.15 mM cm^(-1)h^(-1).Especially,the electrode can maintain the high performance at continuously electrolysis for more than 300 h,or for more than 50 cycles,even repeated operation and storage for more than 2 years.This work provides a promising candidate and new insight to construct industrially viable stable Bi-based catalyst for formate electrosynthesis.

关 键 词：In-situ regeneration Stability FORMATE BISMUTH eCO_(2)RR 

分 类 号：TQ225.121[化学工程—有机化工] TQ426