Sulfur doping and oxygen vacancy in In_(2)O_(3) nanotube co-regulate intermediates of CO_(2) electroreduction for efficient HCOOH production and rechargeable Zn-CO_(2) battery  

作　　者：Yu Li Zhengrong Xu Quanxin Guo Qin Li Rui Liu 

机构地区：[1]Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education,School of Materials Science and Engineering,Tongji University,Shanghai 201804,China

出　　处：《Journal of Energy Chemistry》2025年第2期474-484,I0010,共12页能源化学(英文版)

基　　金：supported by the Fundamental Research Funds for the Central Universities(22120230104).

摘　　要：By manipulating the distribution of surface electrons,defect engineering enables effective control over the adsorption energy between adsorbates and active sites in the CO_(2)reduction reaction(CO_(2)RR).Herein,we report a hollow indium oxide nanotube containing both oxygen vacancy and sulfur doping(V_o-Sx-In_(2)O_(3))for improved CO_(2)-to-HCOOH electroreduction and Zn-CO_(2)battery.The componential synergy significantly reduces the*OCHO formation barrier to expedite protonation process and creates a favorable electronic micro-environment for*HCOOH desorption.As a result,the CO_(2)RR performance of Vo-Sx-In_(2)O_(3)outperforms Pure-In_(2)O_(3)and V_o-In_(2)O_(3),where V_o-S53-In_(2)O_(3)exhibits a maximal HCOOH Faradaic efficiency of 92.4%at-1,2 V vs.reversible hydrogen electrode(RHE)in H-cell and above 92%over a wide window potential with high current density(119.1 mA cm^(-2)at-1.1 V vs.RHE)in flow cell.Furthermore,the rechargeable Zn-CO_(2)battery utilizing V_o-S53-In_(2)O_(3)as cathode shows a high power density of 2.29 mW cm^(-2)and a long-term stability during charge-discharge cycles.This work provides a valuable perspective to elucidate co-defective catalysts in regulating the intermediates for efficient CO_(2)RR.

关 键 词：CO_(2)electroreduction Oxygen vacancy Sulfur doping In_(2)0_(3) Intermediate Zn-CO_(2)battery 

分 类 号：TM911.41[电气工程—电力电子与电力传动] O643.36[理学—物理化学]