文献类型：期刊文献

英文题名：Surfactant-modified electrode-electrolyte interface for steering CO2 electrolysis on Cu electrodes

作者：Dong, Lei[1];Ge, Wangxin[1];Fan, Yu[1];Zhang, Wenfei[1];Jiang, Hongliang[1];Zhao, Yongqing[2];Li, Chunzhong[1]

机构：[1]East China Univ Sci & Technol, Shanghai Engn Res Ctr Hierarch Nanomat, Sch Chem Engn, Shanghai, Peoples R China;[2]Sichuan Lutianhua Co Ltd, Luzhou, Peoples R China

年份：2024

卷号：70

期号：1

外文期刊名：AICHE JOURNAL

收录：;EI(收录号：20234214923065);WOS:【SCI-EXPANDED(收录号:WOS:001087009700001)】；

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

语种：英文

外文关键词：electrode-electrolyte interface; electrolyte; CO2 electrolysis; microenvironment; surfactant

摘要：Cu-based catalysts exhibit the unique ability to generate high-order products from electrochemical CO2 reduction reaction (CO2RR). The performance of electrochemical systems is jointly influenced by the catalysts and local microenvironment of the electrode-electrolyte interface. Here, Cu nanowires as a model catalyst, in combination with cetyl trimethyl ammonium bromide (CTAB) as electrolyte additives, are designed to steer CO2RR. By using the Cu rotating disc electrode and in situ vibrational spectroscopy, it is revealed that the hydrophobic interface microenvironment is built, and the interaction of interfacial water and surface-adsorbed CO is disrupted by CTAB, which dramatically improve formate selectivity (from 5% to 63%) with a high partial current density of formate (13-fold increase) at -1.0 V vs. reversible hydrogen electrode. The understanding of the surfactant-modified electrode-electrolyte interface established here offers a distinct perspective to control the microenvironment on promoting electrosynthesis performance.