Hierarchical NiCo2O4@nickel-sulfide nanoplate arrays for high performance supercapacitors

被引：104
作者：
Chu, Qingxin [1 ]
Wang, Wei [2 ]
Wang, Xiaofeng [2 ]
Yang, Bin [1 ]
Liu, Xiaoyang [2 ]
Chen, Jiuhua [1 ,3 ]
机构：
[1] Ctr High Pressure Sci Adv Res & Technol, Changchun 130012, Peoples R China
[2] Jilin Univ, Coll Chem, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130012, Peoples R China
[3] Florida Int Univ, Miami, FL 33199 USA
来源：
JOURNAL OF POWER SOURCES | 2015年 / 276卷
基金：
中国国家自然科学基金;
关键词：
Supercapacitor; Array electrode; Nickel cobaltate; Nickel sulfide; Core-shell structure; NANOSTRUCTURED ELECTRODE; NANOSHEETS; GRAPHENE; NANOCOMPOSITES; FABRICATION; COMPOSITES; BACKBONE; NICO2O4; DESIGN; GROWTH;
D O I：
10.1016/j.jpowsour.2014.11.015
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Electrodeposition of nickel sulfide (Ni-S) on NiCo2O4 (NiCo2O4@Ni-S) nanoplate arrays produces a new hierarchical core-shell functional-material. Weak crystalline Ni-S nanosheets have been uniformly coated on the NiCo2O4 nanoplate array obtained by hydrothermal growth. When tested as an electrode for supercapacitors, the NiCo2O4@Ni-S nanoplate arrays have been found to exhibit a significantly improved areal capacitance of 1.85 F cm(-2) at a current density of 8 mA cm(-2), good rate capability and cycling stability. In addition, the capacitance fading of the NiCo2O4@Ni-S arrays are attributed to the surface coarsening of the Ni-S nanosheets. Published by Elsevier B.V.
引用
收藏
页码：19 / 25
页数：7
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