A hierarchically structured tin-cobalt composite with an enhanced electronic effect for high-performance CO_(2) electroreduction in a wide potential range

作     者：Xingxing Jiang Xuan Li Yan Kong Chen Deng Xiaojie Li Qi Hu Hengpan Yang Chuanxin He Xingxing Jiang;Xuan Li;Yan Kong;Chen Deng;Xiaojie Li;Qi Hu;Hengpan Yang;Chuanxin He

作者机构：Institute of Microscale OptoelectronicsCollege of Chemistry and Environmental EngineeringShenzhen UniversityShenzhen 518060GuangdongChina 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2023年第76卷第1期

页      面：462-469,I0012页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 

基　　金：supported by the National Natural Science Foundation of China(U21A20312,22172099,21975162,51902209) the Natural Science Foundation of Guangdong(2020A1515010840) the Shenzhen Science and Technology Program(SGDX20201103095802006,RCBS20200714114819161,JCYJ20190808111801674,JCYJ20200109105803806,RCYX20200714114535052) 

主　　题：Hierarchic structure Tin-cobalt bimetallic oxide Electronic effect CO_(2)electroreduction Wide potential range 

摘      要：Earth-abundant and nontoxic Sn-based materials have been regarded as promising catalysts for the electrochemical conversion of CO_(2)to C1 products,e.g.,CO and ***,it is still difficult for Snbased materials to obtain satisfactory performance at low-to-moderate ***,a simple and facile electrospinning technique is utilized to prepare a composite of a bimetallic Sn-Co oxide/carbon matrix with a hollow nanotube structure(Sn Co-HNT).Sn Co-HNT can maintain90%faradaic efficiencies for C1 products within a wide potential range from-0.6 VRHE to-1.2 VRHE,and a highest 94.1%selectivity towards CO in an H-type ***,a 91.2%faradaic efficiency with a 241.3 m A cm^(-2)partial current density for C1 products could be achieved using a flow *** to theoretical calculations,the fusing of Sn/Co oxides on the carbon matrix accelerates electron transfer at the atomic level,causing electron deficiency of Sn centers and reversible variation between Co^(2+)and Co^(3+)*** synergistic effect of the Sn/Co composition improves the electron affinity of the catalyst surface,which is conducive to the adsorption and stabilization of key intermediates and eventually increases the catalytic activity in CO_(2)*** study could provide a new strategy for the construction of oxide-derived catalysts for CO_(2)electroreduction.