1-07　インジウム/亜鉛を電析した銅フォーム電極触媒による高選択的二酸化炭素還元

抄録

Electrochemical reduction (ECR) of CO₂ is one of the most promising technologies for electrification of the conversion process of CO₂ to obtain valuable chemicals/fuels without extreme condition requirements. Here, the performance of an electrocatalyst with the three-dimensional structure of indium thin-layer dispersed completely over Zn nanosheet structure growing on Cu/Cu foam (CF) is presented. This electrocatalyst was fabricated by electrodeposition of In and Zn over CF and exhibited a superior reduction at a Faradaic efficiency of 93.7% and an excellently long duration of 100h. Furthermore, owing to the synergy of the In thin layer, the Zn nanosheets provided a high active surface area and strong mechanical robustness during the reaction. Moreover, the InZnCu/CF catalyst presented low input energy of 2.90MWh for converting one ton of CO₂ into CO, that is an encouraging achievement toward a feasible large scale applications.