文献类型：期刊文献

英文题名：Boron and nitrogen co-doped porous carbon with a high concentration of boron and its superior capacitive behavior

作者：Chen, Hao[1];Xiong, Yachao[1];Yu, Tao[1];Zhu, Pengfei[1];Yan, Xinzhu[1];Wang, Zhao[1];Guan, Shiyou[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Mei Long Rd 130, Shanghai 200237, Peoples R China

年份：2017

卷号：113

起止页码：266

外文期刊名：CARBON

收录：;EI(收录号：20164903085111);WOS:【SCI-EXPANDED(收录号:WOS:000392686600031)】；

基金：The authors are grateful for the financial support from National Natural Science Foundation of China (No. 21274043).

语种：英文

外文关键词：Boric acid - Carbonization - X ray diffraction - Chemical analysis - Carbon - High resolution transmission electron microscopy - Nitrogen - Porous materials - Porosity - X ray photoelectron spectroscopy

摘要：In this work, boron and nitrogen co-doped hierarchical porous carbon (BN-HPC) with a relatively high contents of boron (3.97 wt%) and nitrogen (12.10 wt%) is synthesized by a method combined with template process and carbonization of hierarchical porous resin using melamine and boric acid as nitrogen and boron sources, respectively. The co-doping method achieves a high boron doping level (8 times of that of single boron doped sample) which is of great significance in increasing the doping efficiency of boron. The hierarchical porosity, structure and surface chemical properties are studied in detail via various means, such as Transmission Electron Microscopy, N-2 sorption, X-ray diffraction, X-ray photoelectron spectroscopy and elemental analysis, etc. Owing to the synergistic effect of hierarchical porosity and heteroatoms doping, BN-HPC exhibits greatly improved electrochemical capacitive performance of 304 F g(-1) at a current density of 0.1 A g(-1) and good rate capability (189 F g(-1) remained at a current density of 10 A g(-1)). The strategy of synthesis is facile and very effective. (C) 2016 Elsevier Ltd. All rights reserved.