Thermodynamics of CO Adsorption on Electrodes and Its Implications for Selectivity Control in Electrochemical CO<sub>2</sub> Reduction
Yifei Xu, Bingjun Xu
Abstract
Electrocatalytic conversion of CO 2 into valuable multicarbon (C 2+ ) products powered by renewable electricity is a promising strategy to close the carbon cycle. The thermodynamics of CO adsorption, e.g., the CO binding energy, has been proposed and employed as a descriptor in the catalyst design for the electrochemical CO 2 reduction reaction (CO 2 RR). This perspective briefly summarizes existing strategies to measure the enthalpy and entropy of CO adsorption at electrochemical interfaces, analyzes the mechanistic information extracted from the thermodynamics of CO adsorption on catalyst surfaces, and discusses the factors beyond CO adsorption that affect the performance of the CO 2 RR performance.
Topics & Concepts
SelectivityElectrochemistryAdsorptionReduction (mathematics)ElectrodeCatalysisChemistryInorganic chemistryMaterials scienceThermodynamicsChemical engineeringPhysical chemistryOrganic chemistryPhysicsMathematicsEngineeringGeometryCO2 Reduction Techniques and CatalystsAdvanced Thermoelectric Materials and DevicesIonic liquids properties and applications