Erman Taer, - and Apriwandi, - and Agustino, - and Mega Ratna Dewi, - and Rika Taslim, - (2022) Porous hollow biomass-based carbon nanofiber/nanosheet for high-performance supercapacitor. International Journal of Energy Research, 46. ISSN 1099-114X

Text 19. Porous Hollow IJER Volume 46, issue 2, hal. 1467-1480.pdf Download (2MB)

Abstract

The development of efficient methods to achieve a porous activated carbon nanostructures electrode for high-performance electrochemical double-layer capacitor (EDLC) is urgently needed at present. In this study, biomass-based porous hollow carbon nanofiber/nanosheet with suitable micro/mesopores was successfully prepared using a low-cost simple approach through chemical activation at direct pyrolysis. Biomass-based porous carbon was performed in two different chemical activation of KOH and ZnCl2. The effects of the differ- ent KOH/ZnCl2 concentrations at high-temperature pyrolysis on the morpho- logical structure and porosity were investigated. The synthesized activated carbon possesses micro/mesopores hollow nanofiber/nanosheet, which enhanced specific surface area from 15.163 m2 g1 to ultrahigh specific surface area of 1041.900 m2 g1 . These behaviors exhibit a high specific capacitance of 213 F g1 in a two-electrode system with excellent energy and power density of 29.6 Wh kg1 and 106.6 W kg1 at 1 M H2SO4 aqueous electrolyte. These results provided accurate information about a feasible approach to synthesize biomass-based porous hollow carbon nanofiber/nanosheet to boost high- performance energy storage devices.

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