One-pot synthesis of N-doped petroleum coke-based microporous carbon for high-performance CO2 adsorption and supercapacitors

•A simple and efficient one-pot synthesis route was successfully conducted.•Petroleum coke-based microporous carbon exhibits high CO2 uptake (4.25 mmol/g at 25°C and 1 bar) and specific capacitance (233.25 F/g at 0.5A/g).•Ultra-micropores and basic N species are crucial factors for the enhanced CO2...

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