Indium-based electrocatalysts for CO2 reduction to C1 products

Electrocatalytic CO2 reduction at mild conditions is a promising strategy to transform greenhouse gases into fuels or value-added chemicals to solve the increasingly serious environmental and energy problems. The most crucial factor in determining the CO2 reduction performance is to develop efficient electrocatalysts with high selectivity and stability. Among the various electrocatalysts, indium-based catalysts have attracted extensive attention due to their non-toxicity, low cost, and high formic acid/formate selectivity. In this work, we comprehensively review the recent development and research progress of indium-based electrocatalysts for CO2RR. The reaction mechanism, reaction pathways, structure–activity relationship, and strategies to enhance the activity of CO2RR on indium-based catalysts have also been briefly presented and discussed. Finally, the existing challenges and future developments for indium-based high-performance catalysts for CO2RR are proposed.