Effect of non-metallic P doping on electrocatalytic CO2 reduction performance of In2O3 catalyst
CHENG Qin
DENG Bangwei
DONG Fan
Abstract：Using renewable electrical energy to convert CO2 to high-value chemicals and fuels holds significant importance for mitigating the greenhouse gas effect and achieving carbon neutrality.In this research,we developed a simple and effective method for preparing P-doped In2O3 nanoparticles and applied them in the electrocatalytic reduction of CO2 to formate.For example,the P-doped In2O3 cata-lyst exhibited 88.2％faradaic efficiency for formate production at-1.45 V vs.RHE in an H-type elec-trolysis cell,demonstrating excellent stability.Further experimental analysis and theoretical studies in-dicated that incorporating P elements into the In2O3 lattice significantly enhanced both the adsorption and activation of CO2 molecules.Additionally,it reduced the Gibbs free energy for the formation of*HCOO intermediates and strengthened the adsorption of*HCOO,ultimately promoting formate gen-eration.This study elucidates the inherent mechanisms of non-metallic P doping in enhancing the per-formance of CO2 reduction reactions and provides a viable strategy for the design of high-performance electrocatalysts based on metal oxides for future applications.
Keywords：In2O3Non-metal P-dopingElectrocatalystCO2 reduction reactionFormate
Publication Date：2024-06-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 83-90 )