1. Chitosan-derived hybrid porous carbon with the novel tangerine pith-like surface as supercapacitor electrode.
- Author
-
Yuan, Mengying, Zhang, Yunqiang, Niu, Ben, Jiang, Feng, Yang, Xuena, and Li, Mei
- Subjects
SUPERCAPACITORS ,SUPERCAPACITOR electrodes ,CARBON foams ,CARBON electrodes ,ENERGY density ,POWER density ,CARBON ,ACETIC acid - Abstract
A novel hybrid porous carbon has been synthesized by a facile method blending chitosan with gelatin in acetic acid solution. Gelatin changes the morphology of the chitosan-derived carbon materials and produces abundant micro- and mesopores with the help of KHCO
3 . More importantly, gelatin brings heteroatoms and pseudo-capacitance into hybrids to improve the capacitive performance as the nitrogen source. A unique tangerine pith-like morphology comes into being on the chitosan-derived hybrid porous carbon, and there are lots of interconnected micropores forming with high specific surface area of 927.17 m2 g−1 . This particular morphology, high nitrogen content and specific surface area ensure the as-obtained carbon electrode wonderful capacitive performance with specific capacitance of 331 F g−1 in 6 mol L−1 KOH electrolyte at 1 A g−1 , high retention of 73% and excellent capacity stability of 90% after 10000 cycles at 10 A g−1 . Additionally, the chitosan-derived hybrid porous carbon shows remarkable energy density of 34 W h kg−1 with the power density of 900 W kg−1 , superior to majority of the commercial devices. The simple and efficient strategy and the excellent electrochemical performance are of great significance to the large-scale application of biomass-based supercapacitors. [ABSTRACT FROM AUTHOR]- Published
- 2019
- Full Text
- View/download PDF