Dual nitrogen sources co-doped mesoporous carbon with ultrahigh rate capability for high-performance supercapacitors
Dual nitrogen sources co-doped mesoporous carbon with ultrahigh rate capability for high-performance supercapacitors
复制标题
双氮源具有超高倍率能力的共掺杂介孔碳用于高性能超级电容器
DOI：
10.1016/j.jallcom.2019.153627
复制
发表时间：
2020-05
影响因子：
6.2
通讯作者：
Yu Liyan
中科院分区：
文献类型：
--
作者：
Xin Xipeng;Wang Zhihuan;Jia Ruiming;Gao Chang;Sui Lina;Dong Hongzhou;Feng Jianguang;Ma Shuai;Pang Beili;Chen Yingjie;Dong Lifeng;Yu Liyan
Nitrogen-doped ordered mesoporous carbon (N-OMC) was synthesized through evaporation induced self-assembly (EISA) technique by using pyrrole and carbamide as N sources. The obtained N-OMC has high-ordered 2D-hexagonal mesostructures with uniform pore size and high specific surface area. When pyrrole and carbamide were simultaneously employed as N sources, the sample shows higher subtotal percentage of pyridinic and pyrrolic N, leading to better electrochemical performance. As-prepared N-OMC with dual N sources (N12-OMC-1) possesses an ultra-high specific capacitance of 310 F g−1at the current density of 1.0 A g−1and remains 245 F g−1(nearly 80% of its capacitance at 1.0 A g−1) at 20 A g−1, achieving both high rate capability and high specific capacitance. N12-OMC-1 based symmetrical supercapacitor demonstrates the highest energy density of 17.8 Wh kg−1at a power density of 225 W kg−1and maintains 12.2 Wh kg−1at a very high output power density of 13500 W kg−1in 1 M Na2SO4electrolyte. Moreover, the N12-OMC-1 based symmetrical supercapacitor exhibits an excellent long-term electrochemical stability with 96.2% capacitance retention and 97% coulombic efficiency after 5000 cycles. Outstanding performances of N12-OMC-1 make it a potential candidate for supercapacitor applications.
登录
查看更多内容
影响因子：
10.9
作者：
Dong Luo;Lihua Gan;Mingxian Liu;Dongmei Sun
通讯作者：
Dongmei Sun
影响因子：
10.9
作者：
Zhaohui Wang;Long Qie;Lixia Yuan;Wuxing Zhang;Xianluo Hu;Yunhui Huang
通讯作者：
Zhaohui Wang;Long Qie;Lixia Yuan;Wuxing Zhang;Xianluo Hu;Yunhui Huang
影响因子：
11.9
作者：
Wang, Xiqing;Liu, Chen-Guang;Dai, Sheng
通讯作者：
Dai, Sheng
影响因子：
32.5
作者：
Li, Zhi;Xu, Zhanwei;Mitlin, David
通讯作者：
Mitlin, David
影响因子：
19
作者：
Wei, Lu;Sevilla, Marta;Yushin, Gleb
通讯作者：
Yushin, Gleb