Gamma-radiated biochar carbon for improved supercapacitor performance.

ABSTRACT: Biochar carbon YP-50 exposed to gamma radiation at 50 kGy, 100 kGy, and 150 kGy was used as an electrode for an electric double-layer capacitor. The gamma radiation affected the pore structure and pore volume of the biochar electrodes. The optimized surface morphology, pore structure, and pore volume of the biochar with an irradiation dose of 100 kGy showed outstanding specific capacitance of 246.2 F g^-1 compared to the untreated biochar (115.3 F g^-1). The irradiation dose of 100 kGy exhibited higher specific power and specific energy of 0.1 kW kg^-1 and 34.2 W h kg^-1 respectively, with a capacity retention of above 96% after 10 000 cycles at a current density of 2 A g^-1. This improvement can be attributed to the decrease in average par

SUBMITTER: Adhamash E 

PROVIDER: S-EPMC9056314 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature