文献类型：期刊文献

英文题名：Large-size graphene-like porous carbon nanosheets with controllable N-doped surface derived from sugarcane bagasse pith/chitosan for high performance supercapacitors

作者：Niu, Qingyuan[1] Gao, Kezheng[1] Tang, Qiheng[2] Wang, Lizhen[1] Han, Lifeng[1] Fang, Hua[1] Zhang, Yong[1] Wang, Shiwen[1] Wang, Lixia[1]

第一作者：Niu, Qingyuan

通信作者：Gao, KZ[1];Wang, LZ[1]

机构：[1]Zhengzhou Univ Light Ind, Sch Mat & Chem Engn, Zhengzhou 450002, Peoples R China;[2]Chinese Acad Forestry, Res Inst Wood Ind, 1 Dongxiaofu, Beijing 100091, Peoples R China

年份：2017

卷号：123

起止页码：290-298

外文期刊名：CARBON

收录：;EI(收录号：20173003988855);Scopus(收录号：2-s2.0-85025685368);WOS:【SCI-EXPANDED(收录号:WOS:000410369600034)】；

基金：Financial support was kindly supplied by grants from National Natural Science Foundation of China (No. 21501154, No. 21601162, and No. 21471135), Important Research Project at the University of Henan Province (16A430031), the Project of Henan Province Science and Technology Department (152102210352) and Doctoral Research Foundation of Zhengzhou University of Light Industry (2014BSJJ059 and 2014BSJJ060).

语种：英文

外文关键词：Sugarcane bagasse pith; Chitosan; Carbon nanosheets; Controllable N-doped surface; Supercapacitors

摘要：The large-size graphene-like porous carbon nanosheets (LGPCN) with controllable N-doped surface are successfully prepared by using a simple and effective integrated "self-template" and "designing" strategy through KOH activation. Biomass-sugarcane bagasse pith and chitosan are used as self-template carbon source and controlled nitrogen source, respectively. The relationship between structure of the LGPCN-X (X represents the activation temperature) and its electrochemical performance at different activation temperatures is explored in detail. The large-size multiscale wrinkled nanosheets architecture, high surface area, and appropriate controllable surface nitrogen doping state of the LGPCN-800 shows the best electrochemical performance in 6 M KOH. The largest specific electrode capacitance is about 339 F g(-1) (at 0.25 A g(-1)), which still as high as 280 F g(-1) at 100 A g(-1). The maximum energy density is about 11.77 Wh kg(-1) at a power density of 34.11 W kg(-1). The LGPCN-800 also shows an excellent cycling stability with 97.9% capacitance retention after 10,000 cycles. (C) 2017 Elsevier Ltd. All rights reserved.