今日获知，张泽坤同学的论文Further study of CO2 electrochemical reduction to gas products on Cu: influence of the electrolyte被ChineseChemical Letters接收。该论文获得国家自然科学基金和西安交通大学基本科研业务费的资助。ChineseChemical Letters为西安交通大学最具影响力期刊。论文摘要如下：Current research in the direction of electrocatalytic reduction of CO2 (ECO2R) focuses on the preparation of catalysts with excellent performance, but little has been reported on the effect of electrolyte type on the selectivity of ECO2R gas products. In this work, the ECO2R performance of unmodified Cu foam (CF) was systematically investigated in four electrolytes (KCl, NaCl, KHCO3, and NaHCO3) at different concentrations (0.1, 0.5 and 1.0 mol/L), using Cu foam (CF) as the working electrode. The results showed that CF exhibited high selectivity for C2H4 in KCl solution, while high selectivity for CH4 in low concentration NaCl and NaHCO3 solutions containing Na+. In addition, serious hydrogen evolution reactions (HERs) were observed in both KHCO3 and NaHCO3 solutions at higher concentrations, which were attributed to the lower local pH of the two buffer solutions. It was also shown that solution resistance of the cathode electrolyte during ECO2R process decreased consistently due to the trans-membrane diffusion of K+ and Na+, especially at the low concentration of electrolyte of 0.1 mol/L. It was detrimental to keep the reduction process stabilized for a long period of time. Furthermore, the non-buffered solutions KCl and NaCl also maintained a neutral pH (≈ 6.7) after a period of ECO2R, resulting in a stable ECO2R. The results of this work will provide significant insights into the design of reaction systems of ECO2R in the future.