Polyacrylate modified Cu electrode for selective electrochemical CO_(2) reduction towards multicarbon products

作     者：Yuchuan Shi Kaini Zhang Chung-Li Dong Ta Thi Thuy Nga Miao Wang Daixing Wei Jialin Wang Yiqing Wang Shaohua Shen 石玉川;张凯妮;董崇礼;Ta Thi Thuy Nga;汪淼;魏代星;王佳琳;王亦清;沈少华

作者机构：International Research Center for Renewable EnergyState Key Laboratory of Multiphase Flow in Power EngineeringXi’an Jiaotong UniversityXi’an 710049China Department of PhysicsTamkang UniversityNew Taipei City 25137China 

出 版 物：《Science Bulletin》 (科学通报（英文版）)

年 卷 期：2024年第69卷第15期

页      面：2395-2404页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081704[工学-应用化学] 08[工学] 0817[工学-化学工程与技术] 

基　　金：supported by the National Natural Science Foundation of China(52225606,52488201) the Fundamental Research Funds for the Central Universities The Youth Innovation Team of Shaanxi Universities 

主　　题：Electrochemical CO_(2)reduction Polymer modification Electron transfer C_(2+)products 

摘      要：Highly selective production of value-added multicarbon(C^(2+))products via electrochemical CO_(2) reduction reaction(eCO_(2)RR)on polycrystalline copper(Cu)remains ***,the facile surface modification using poly(α-ethyl cyanoacrylate)(PECA)is presented to greatly enhance the C^(2+)selectivity for eCO_(2)RR over polycrystalline Cu,with Faradaic efficiency(FE)towards C^(2+)products increased from30.1%for the Cu electrode to 72.6%for the obtained Cu-PECA electrode at-1.1 V *** hydrogen electrode(RHE).Given the well-determined FEs towards C^(2+)products,the partial current densities for C^(2+)production could be estimated to be-145.4 mA cm~(-2)for the Cu-PECA electrode at-0.9 V *** in a homemade flow ***-situ spectral characterizations and theoretical calculations reveal that PECA featured with electron-accepting-C≡N and-COOR groups decorated onto the Cu electrode could inhibit the adsorption of^(*)H intermediates and stabilize the^(*)CO intermediates,given the redistributed interfacial electron density and the raised energy level of d-band center(E_(d))of Cu active sites,thus facilitating the C-C coupling and then the C^(2+)selective *** study is believed to be guidable to the modification of electrocatalysts and electrodes with polymers to steer the surface adsorption behaviors of reaction intermediates to realize practical eCO_(2)RR towards value-added C^(2+)products with high activity and selectivity.