The solar energy-driven electrochemical CO_(2)reduction to value-added fuels or chemicals is considered as an attractive path to store renewable energy in the form of chemical energy to close the carbon cycle.However,...The solar energy-driven electrochemical CO_(2)reduction to value-added fuels or chemicals is considered as an attractive path to store renewable energy in the form of chemical energy to close the carbon cycle.However,CO_(2)reduction suffers from a number of challenges including slow reaction rates,low selectivity,and low energy conversion efficiency.Recently,innovative strategies have been developed to mitigate this challenges.Especially the development of flow cell reactors with a gas diffusion electrode,ionic liquid electrolytes,and new electrocatalysts have dramatically improved the reaction rates and selectivity to desired products.In this perspective,we highlight the key recent developments and challenges in PVpowered electrochemical CO_(2)reduction and propose effective strategies to improve the reaction kinetics,to minimize the electrical energy losses,and to tune the selectivity of the catalysts for desired products,and then suggest future direction of research and development.展开更多
基金supported by the Climate Change Response Project(NRF-2019M1A2A2065612)the Basic Science Grant(NRF2019R1A4A1029237)+2 种基金the Korea-China Key Joint Research Program(2017K2A9A2A11070341)funded by the Ministry of Science and ICT,and by the 2019 Research Fund(1.190013.01)of UNISTsupport from‘‘Carbon to X Project”(Project No.2020M3H7A1098231)through the National Research Foundation(NRF)funded by the Ministry of Science and ICT,Republic of Korea。
文摘The solar energy-driven electrochemical CO_(2)reduction to value-added fuels or chemicals is considered as an attractive path to store renewable energy in the form of chemical energy to close the carbon cycle.However,CO_(2)reduction suffers from a number of challenges including slow reaction rates,low selectivity,and low energy conversion efficiency.Recently,innovative strategies have been developed to mitigate this challenges.Especially the development of flow cell reactors with a gas diffusion electrode,ionic liquid electrolytes,and new electrocatalysts have dramatically improved the reaction rates and selectivity to desired products.In this perspective,we highlight the key recent developments and challenges in PVpowered electrochemical CO_(2)reduction and propose effective strategies to improve the reaction kinetics,to minimize the electrical energy losses,and to tune the selectivity of the catalysts for desired products,and then suggest future direction of research and development.
