文献类型：期刊文献

英文题名：Anionic Surfactant-Tailored Interfacial Microenvironment for Boosting Electrochemical CO2 Reduction

作者：Yuan, Xin[1,2];Ge, Wangxin[1,2];Zhu, Yihua[2];Dong, Lei[1];Jiang, Hongliang[1];Li, Chunzhong[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Engn Res Ctr Hierarch Nanomat, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2024

卷号：16

期号：29

起止页码：38083

外文期刊名：ACS APPLIED MATERIALS & INTERFACES

收录：;EI(收录号：20242916716070);WOS:【SCI-EXPANDED(收录号:WOS:001276274300001)】；

基金：This work was supported by the National Key R&D program (2022YFB3808400), the National Natural Science Foundation of China (22222804 and U22B20143), the Science and Technology Commission of Shanghai Municipality (22dz1205900), and the Shanghai Municipal Science and Technology Major Project. The authors thank the Shanghai Synchrotron Radiation Facility (14W1, SSRF).

语种：英文

外文关键词：CO2 reduction; surfactant; ag; microenvironment; H-bonded water

摘要：Both the catalyst and electrolyte deeply impact the performance of the carbon dioxide reduction reaction (CO2RR). It remains a challenge to design the electrolyte compositions for promoting the CO2RR. Here, typical anionic surfactants, dodecylphosphonic acid (DDPA) and its analogues, are employed as electrolyte additives to tune the catalysis interface where the CO2RR occurs. Surprisingly, the anionic surfactant-tailored interfacial microenvironment enables a set of typical commercial catalysts for the CO2RR to deliver a significantly enhanced selectivity of carbon products in both neutral and acidic electrolytes. Mechanistic studies disclose that the DDPA addition restructures the interfacial hydrogen-bond environment via increasing the weak H-bonded water, thus promoting the CO2 protonation to CO. Specifically, in an H-type cell, the Faradaic efficiency of CO increases from 70 to 98% at -1.0 V versus the reversible hydrogen electrode. Furthermore, in a flow cell, the DDPA-containing electrolyte maintains over 90% FECO from 50-400 mA cm(-2). Additionally, this electrolyte modulation strategy can be extended to acidic CO2RR with a pH of 1.5-3.5.