Journal
JOURNAL OF POWER SOURCES
Volume 364, Issue -, Pages 374-382Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2017.08.059
Keywords
N-doped carbon; Monolith; Supercapacitor
Funding
- Japan Society for the Promotion of Science [16K14081, 17H03114]
- Hundred Talents Program, Shaanxi Province, PR China
- China Scholarship Council (CSC)
- Grants-in-Aid for Scientific Research [16K14081, 17H03114] Funding Source: KAKEN
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Nitrogen-doped porous monolithic carbon (NDPMC) is obtained from biomass-derived activated carbon/polyacrylonitrile composite for the first time via a template-free thermally induced phase separation (TIPS) approach followed by KOH activation. The electrochernical results indicate that NDPMC possesses ultrahigh specific capacitance of 442 F g(-1) at 1 A g(-1), excellent rate capability with 81% retention rate from 1 to 100 A g(-1) and outstanding cycling stability with 98% capacitance retention at 20 A g(-1) after 5000 cycles. Furthermore, the evaluation of NDPMC on the practical symmetrical system also exhibits desired electrochemical performances. The novel composite carbon displays remarkable capacitance properties and the feasible, low-cost synthetic route demonstrates great potential for large-scale production of high-performance electrode materials for supercapacitors. (C) 2017 Elsevier B.V. All rights reserved.
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