3D network-like mesoporous NiCo2O4 nanostructures as advanced electrode material for supercapacitors

3D network-like mesoporous NiCo2O4 nanostructures as advanced electrode material for supercapacitors
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3D网络状介孔NiCo2O4纳米结构作为超级电容器的先进电极材料

DOI:
10.1016/j.electacta.2014.10.064
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发表时间:
2014-12
影响因子:
6.6
通讯作者:
Ji Xiaobo
Ji Xiaobo
中科院分区:
材料科学2区
文献类型:
--
作者:
Zhu Yirong;Wu Zhibin;Jing Mingjun;Song Weixin;Hou Hongshuai;Yang Xuming;Chen Qiyuan;Ji Xiaobo

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通过溶剂热结合后退火处理,成功制备了三维网状介孔nico2o4纳米结构。nico2o4具有独特的三维网状结构,具有大的比表面积(170.6 m2g−1)、丰富的介孔(5-10 nm)和高的电子导电性,在3 A g−1下具有931 F g−1的高比电容,与2 A g−1相比,在20和50 A g−1下的容量保持率分别为85.2和72.5%,在3 A g−1下循环1000次时具有125.2%的初始容量保持率。纳米nico2o4具有优异的电化学性能和简单经济的制备方法,将使其成为极具吸引力的超级电容器电极材料。
3D network-like mesoporous NiCo2O4nanostructures have been successfully fabricated through a solvothermal route coupled with a post annealing treatment. Benefiting from its advantages of the unique 3D network-like structures with large specific surface area (170.6 m2g−1), abundant mesoporosity (5–10 nm) and high electronic conductivity, the as-obtained NiCo2O4manifests high specific capacitance of 931 F g−1at 3 A g−1, remarkable capacity retention rate of 85.2 and 72.5% at 20 and 50 A g−1compared with 2 A g−1and superior cycling stability of 125.2% of initial capacity retention over 1000 cycles at 3 A g−1. The excellent electrochemical performances coupled with its facile and cost-effective way will render the 3D network-like mesoporous NiCo2O4nanostructures as attractive electrode materials for promising application in supercapacitors.
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