407201 Ni Catalytic Graphitized Porous Carbon As Electrode Material for High Performance Supercapacitors

Tuesday, November 10, 2015: 4:45 PM
251D (Salt Palace Convention Center)
Keliang Wang, ABE, South Dakota State University, Brookings, SD and Zhengrong Gu, south dakota state university, Brookings, SD

Whey protein derived, N-doped porous carbon has been prepared by preliminary carbonization at 400  and final KOH activation at 700  combined with catalytic graphitization. Physical characterization, indicated the obtained N-doped activated electrode material exhibited a large specific surface area (2536.2 m2 g-1) and plenty of interconnected cavities, which greatly improved the performance as a supercapacitor. Electrochemical measurements demonstrated that the as-prepared activated electrode material achieved exceptionally high capacitance of 248 F g-1 at charge/discharge current density of 0.1 A g-1. Moreover, the as-prepared activated electrode material exhibited ideal capacitive behavior with almost no capacitance loss in 6 mol L-1 KOH at different charge/discharge current densities ranging from 0.1 to 5 A g-1 after 1,000 charge/discharge cycles. These results suggested that biomass derived porous carbon is a promising supercapacitor electrode material.

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