Effect of electrolyte cation-mediated mechanism on electrocatalytic carbon dioxide reduction  

作　　者：Yuan Dong Mutian Ma Zhenyang Jiao Sheng Han Likun Xiong Zhao Deng Yang Peng 

机构地区：[1]Soochow Institute of Energy and Material Innovations,College of Energy,Jiangsu Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies,Soochow University,Soochow 215006,China [2]Jiangsu Key Laboratory of Advanced Negative Carbon Technologies,Soochow University,Soochow 215123,China [3]School of Chemistry and Chemical Engineering,Shihezi University,Shihezi 832003,China [4]School of Chemical and Environmental Engineering,Shanghai Institute of Technology,Shanghai 201418,China

出　　处：《Chinese Chemical Letters》2024年第7期139-146,共8页中国化学快报（英文版）

基　　金：Financial support from National Natural Science Foundation of China(Nos.22109099 and 22072101);“Chen Guang”Project supported by Shanghai Municipal Education Commission and Shanghai Education Development Foundation(No.21CGA66);Natural Science Foundation of Jiangsu Province(No.BK20211306);Priority Academic Program Development(PAPD)of Jiangsu Higher Education Institutions。

摘　　要：The steep reduction in costs and systematic optimization of renewable electricity has ignited an intensifying interest in harnessing electroreduction of carbon dioxide(CO_(2)RR)for the generation of chemicals and fuels.The focus of research over the past few decades has been on the optimization of the electrode and the electrolyte environment.Notably,cation species in the latter have recently been found to dramatically alter the selectivity of CO_(2)RR and even their catalytic activity by multiple orders of magnitude.As a result,the selection of cations is a critical factor in designing catalytic interfaces with high selectivity and efficiency for targeted products.Informed decision-making regarding cation selection relies on a comprehensive understanding of prevailing electrolyte effect models that have been used to elucidate observed experimental trends.In this perspective,we review the hypotheses that explain how electrolyte cations influence CO_(2)RR by mechanisms such as through tuning of the interfacial electric field,buffering of the local pH,stabilization of the key intermediates and regulation of the interfacial water.Our endeavor is to elucidate the molecular mechanisms underpinning cation effects,thus fostering the evolution of more holistic and universally applicable predictive models.In this regard,we highlight the current challenges in this area of research,while also identifying potential avenues for future investigations.

关 键 词：CO_(2)electrocatalytic reduction Cation effects Catalytic mechanisms Catalytic interfaces Electric double layer 

分 类 号：X701[环境科学与工程—环境工程] O643.36[理学—物理化学]