Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5150148 | Journal of Power Sources | 2016 | 7 Pages |
Abstract
N-doped porous carbon materials derived from urea-modified lignin were prepared via efficient KOH activation under carbonization. The synthesized N-doped carbon materials, which displayed a well-developed porous morphology with high specific surface area of 3130 m2 gâ1, were used as electrode materials in symmetric supercapacitors with aqueous and solid electrolytes. In consistent with the observed physical structures and properties, the supercapacitors exhibited specific capacitances of 273 and 306 F gâ1, small resistances of 2.6 and 7.7 Ω, stable charge/discharge at different current densities for over 5000 cycles and comparable energy and power density in 6 mol Lâ1 KOH liquid and KOH-PVA solid electrolytes, respectively.
Related Topics
Physical Sciences and Engineering
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Authors
Keliang Wang, Ming Xu, Yan Gu, Zhengrong Gu, Qi Hua Fan,