文献类型：期刊文献

中文题名：Amplifying cation effects on high-curvature nanostructures via enhancing interfacial electric field for CO_(2)RR to multicarbon product

作者：Weizheng Tang[1];Yongjun Shen[1];Yu Yang[3,4];Congcong Li[1];Yu Li[1];Shixin Yin[1];Fengwang Li[3,4];Huihui Li[1];Chunzhong Li[1,2]

机构：[1]Key Laboratory for Ultrafine Materials of Ministry of Education,School of Chemical Engineering,East China University of Science and Technology,Shanghai 200237,China;[2]Shanghai Engineering Research Center of Hierarchical Nanomaterials,School of Materials Science and Engineering,East China University of Science and Technology,Shanghai 200237,China;[3]School of Chemical and Biomolecular Engineering,The University of Sydney,NSW 2006,Australia;[4]ARC Centre of Excellence for Green Electrochemical Transformation of Carbon Dioxide,The University of Sydney,NSW 2006,Australia

年份：2025

卷号：18

期号：3

起止页码：178

中文期刊名：Nano Research

外文期刊名：纳米研究(英文版)

基金：supported by the National Natural Science Foundation of China(Nos.U22B20143 and 22478121);Shanghai Municipal Science and Technology Major Project,the Science and Technology Commission of Shanghai Municipality(No.22dz1205900);the Fundamental Research Funds for the Central Universities(No.JKD01241702);F.W.L.acknowledges the financial support from the ARC Centre of Excellence for Green Electrochemical Transformation of Carbon Dioxide(No.CE230100017).

语种：英文

中文关键词：CO_(2)reduction reaction(CO_(2)RR);cation effect;interfacial electric field;surface charge density;high-curvature nanostructure

摘要：Cation effect has emerged as a promising strategy for modulating the product distribution during the electrocatalytic CO_(2)reduction reaction(CO_(2)RR).However,the strategy of solely increasing bulk cation concentration in the electrolyte to intensify cation effect at the electrode interface exacerbates carbonate formation issue.Therefore,it is crucial to achieve local cation enrichment at the electrolyte interface without increasing bulk cation concentration.Herein,we propose a"surface charge density modulation"strategy to strengthen interfacial electric field,intensifying the local cation effect at the electrode interface in a low-concentration electrolyte.We implement this strategy using leaf-like CuO nanosheets,introducing a high-curvature morphology into the catalysts.As a result,the CuO nanosheets display 3.4-fold enhancement in Faradic efficiency(FE)of multi-carbon products(C_(2+))compared to CuO nanospheres with low-curvature.In-situ Raman spectroscopy and control experiment varying concentration of K^(+)reveal the mechanism on how the cation effect and interfacial electric field influence CO_(2)RR performance.