Mesoporous Ni-P@NiCo2O4 composite materials for high performance aqueous asymmetric supercapacitors
Mesoporous Ni-P@NiCo2O4 composite materials for high performance aqueous asymmetric supercapacitors
复制标题
用于高性能水系不对称超级电容器的介孔Ni-P@NiCo2O4复合材料
DOI:
10.1016/j.electacta.2016.11.089
复制
发表时间:
2016-12-20
影响因子:
6.6
通讯作者:
Liu, Enhui
中科院分区:
文献类型:
--
作者:
Li, Xudong;Ding, Rui;Liu, Enhui
Mesoporous Ni-P@NiCo2O4 composite materials have been fabricated via a facile strategy including solvothermal synthesis of Ni-P and subsequent chemical deposition of NiCo2O4. Due to the synergistic effect between Ni-P and NiCo2O4, the Ni-P@ NiCo2O4 composite materials exhibit an enhanced performance (1240 F g(-1) at 1 A g(-1), 668 F g(-1) at 16 A g(-1)) compared with the bare Ni-P materials (717 F g(-1) at 1 A g(-1), 106 F g(-1) at 16 A g(-1)) and NiCo2O4 materials (741 F g(-1) at 1 A g(-1), 457 F g(-1) at 16 A g(-1)). Furthermore, the AC//Ni-P@ NiCo2O4 asymmetric capacitor exhibits superior energy/power densities (13.3 Wh kg(-1)/5.7 kW kg(-1)) and cycling behavior (78.3% retention after 10,000 cycles at 4 A g(-1)) than the AC//Ni-P asymmetric capacitor (7.4 Wh kg(-1)/5.7 kW kg(-1), 63.4% retention after 10,000 cycles at 4 A g(-1)) and AC//NiCo2O4 asymmetric capacitor (10.4 Wh kg(-1)/5.6 kW kg(-1), 32.4% retention after 10,000 cycles at 4 A g(-1)). The high performance makes the mesoporous Ni-P@ NiCo2O4 composite materials promising electrode materials for supercapacitors. (C) 2016 Elsevier Ltd. All rights reserved.