Progress of electrochemical CO2 reduction reactions over polyoxometalate-based materials

Electrochemical CO2 reduction to value-added fuels and chemicals is recognized as a promising strategy alleviate energy shortages global warming owing its high efficiency economic feasibility. Recently, understanding the activity origin, selectivity regulation, reaction mechanisms of reactions (CO2RRs) has become focus efficient electrocatalyst design. Polyoxometalates (POMs), unique class nanosized metal-oxo clusters, are candidates for development CO2RR electrocatalysts and, their well-defined structure, remarkable electron/proton storage transfer ability, capacities adsorption activation CO2, ideal models investigating origin electrocatalysts. In this review, we on mechanism CO2RRs survey recent advances that were achieved by employing POMs in electrocatalytic CO2RRs. We highlight significant roles process main factors influencing regulation catalytic performance, including electrolyte, electron-transfer process, surface characteristics. Finally, offer perspective advantages future challenges POM-based materials could inform new advancements research field.