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Facile synthesis of bio-based nitrogen- and oxygen-doped porous carbon derived from cotton for supercapacitors
Zhang, L (Zhang, Lan); Xu, L (Xu, Lu); Zhang, YG (Zhang, Yagang); Zhou, X (Zhou, Xin); Zhang, LT (Zhang, Letao); Yasin, A (Yasin, Akram); Wang, LL (Wang, Lulu); Zhi, KK (Zhi, Keke)
2018
Source PublicationRSC ADVANCES
ISSN2046-2069
Volume8Issue:7Pages:3869-3877
Abstract

Biomass-derived O- and N-doped porous carbon has become the most competitive supercapacitor electrode material because of its renewability and sustainability. We herein presented a facile approach to prepare O/N-doped porous carbon with cotton as the starting material. Absorbent cotton immersed in diammonium hydrogen phosphate (DAP) was activated at 800 degrees C (CDAP800s) and then was oxidized in a temperature range of 300-400 degrees C. The electrochemical capacitance of the impregnated cotton was significantly improved by doping with O and N, and the yield was improved from 13% to 38%. The sample oxidation at 350 degrees C (CDAP800-350) demonstrated superior electrical properties. CDAP800-350 showed the highest BET surface area (1022 m(2) g(-1)) and a relatively high pore volume (0.53 cm(3) g(-1)). In a three-electrode system, the CDAP800-350 electrodes had high specific capacitances of 292 F g(-1) in 6 M KOH electrolyte at a current density of 0.5 A g(-1). In the two-electrode system, CDAP800-350 electrode displayed a specific capacitance of 270 F g(-1) at 0.5 A g(-1) and 212 F g(-1) at 10 A in KOH electrolyte. In addition, the CDAP800-350-based symmetric supercapacitor achieved a high stability with 87% of capacitance retained after 5000 cycles at 5 A g(-1), as well as a high volumetric energy density (18 W h kg(-1) at 250 W kg(-1)).

DOI10.1039/c7ra11475c
Indexed BySCI
WOS IDWOS:000423348500060
Citation statistics
Document Type期刊论文
Identifierhttp://ir.xjipc.cas.cn/handle/365002/5215
Collection资源化学研究室
Corresponding AuthorZhang, YG (Zhang, Yagang)
Affiliation1.Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Urumqi 830011, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Xinjiang Inst Engn, Dept Chem & Environm Engn, Urumqi 830023, Peoples R China
Recommended Citation
GB/T 7714
Zhang, L ,Xu, L ,Zhang, YG ,et al. Facile synthesis of bio-based nitrogen- and oxygen-doped porous carbon derived from cotton for supercapacitors[J]. RSC ADVANCES,2018,8(7):3869-3877.
APA Zhang, L .,Xu, L .,Zhang, YG .,Zhou, X .,Zhang, LT .,...&Zhi, KK .(2018).Facile synthesis of bio-based nitrogen- and oxygen-doped porous carbon derived from cotton for supercapacitors.RSC ADVANCES,8(7),3869-3877.
MLA Zhang, L ,et al."Facile synthesis of bio-based nitrogen- and oxygen-doped porous carbon derived from cotton for supercapacitors".RSC ADVANCES 8.7(2018):3869-3877.
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