Background and Originality Content
Electrocatalytic CO2RR affords a promising route to
address the current environmental and energy issues by converting
CO2 into carbon-based fuels[1, 2].
Among the different electrochemical CO2RR products, CO
is regarded as one of the most promising industrial targets due to its
high energy efficiency[3, 4]. Tremendous efforts
have been devoted to developing efficient electrocatalysts with high
activity and selectivity to favor CO production[5,
6]. Recently, single-atom catalysts have aroused increasing interests
owing to their high atomic utilization efficiency and tunable
coordination structure[7, 8].
Metal-nitrogen-carbon catalysts as one of the most typical SACs have
attracted extensive attention for the CO2RR to produce
CO[9, 10]. However, M-N-C catalysts usually
exhibit poor CO2RR performance without further
modification. Therefore, developing effective M-N-C catalysts for highly
active CO2RR remains challenging yet urgent.