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Cycling and floating performance of symmetric supercapacitor derived from coconut shell biomass

This paper is available in a repository.
This paper is available in a repository.

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Abstract

This work present two-step synthesizes route to low-cost mesoporous carbon from coconut shell. The electrochemical characterization of the coconut shell based activated carbon (CSAC) material as electrode for supercapacitor showed a specific capacitance of 186 F g-1, energy density of 11 Wh kg-1 and power density of 325 W kg-1 at a 0.5 A g-1 with an excellent stability after floating for 100 h and cycling for 10000 cycles in polymer gel electrolyte. The CSAC showed very good potential as a stable material for supercapacitors desirable for high power applications. ; The South African Research Chairs Initiative of the Department of Science and Technology and National Research Foundation of South Africa (Grant No 97994). F. Barzegar and D. Y. Momodu acknowledge the University of Pretoria for Postdoctoral fellowship support, while A. Bello acknowledges financial support from NRF through SARChI in Carbon Technology and Materials. ; http://scitation.aip.orgcontent/aip/journal/adva ; am2017 ; Physics