Preparation of Nitrogen-doped Hollow Carbon Materials and Their Supercapacitor Performance
Given the non renewable nature of traditional fossil fuels,research on clean energy is becoming increasingly urgent and important.With the development of a series of transportation vehicles such as new energy vehicles,which mainly rely on electricity as the main source of power,the market's demand for energy storage devices is also increasing,with lithium batteries,fuel cells,supercapacitors and other directions being highly favored.Double layer supercapacitors are highly anticipated in the market due to their charging and discharging behavior only involving physical changes,and their electrochemical performance is not affected by overshoot or over discharge,as well as their fast charging and discharging characteristics.This work adopts a"one pot"method to synthesize nitrogen doped hollow carbon materials with excellent performance,and applies them to supercapacitors.Through electrochemical performance testing,it was found that nitrogen doping can effectively improve the conductivity of the material,accelerate ion transport,and achieve a specific capacitance of 76 F/g under constant current charging and discharging of 1 A/g.The capacitance retention rate after 2000 cycles reaches 98%.
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维普
