Structural Optimization of Metal Oxyhalide for C02 Reduction with High Selectivity and Current Density

• 作者: Fan-Lu Meng Qi Zhang Yan-Xin Duan Kai-Hua Liu Xin-Bo Zhang
• 来源期刊: 中国化学（英文版）
• 年，卷（期）: 2020,（12）
• 所属期刊栏目: Comprehensive Reports
• 页码范围: 1752-1756
• 页数: 5页
• 语种: 英文
• DOI: 10.1002/cjoc.202000203

摘要

Electrochemical C02 reduction into value-added liquid fuels using C02 neutral renewable energy sources is very promising to solve climatic issues.In order to realize their practical applications,highly active and inexpensive electrocatalysts are urgently re-quired.In this study,we have experimentally achieved high electrocatalytic activity towards CO2 reduction for the synthesis of formate with an enhanced current density of 15.1 mA·cmf2 and significantly improved Faradaic efficiency of 98.4％ upon electrochemical reduced ultrathin bismuth oxybromide nanosheets.Moreover,the stable performance during 24 h of operation is also obtained.Furthermore,by detecting the exposed crystal plane after sur-face reorganization and applying density functional theory calculations,the possible reaction pathways and catalytic active plane of the derived bismuth catalyst are put forward,which would offer basic and design principles to directly develop the optimized metal Bi catalysts for enhanced electrocatalytic CO2 conversion to formate.