Rational construction of core-shell Ni3S2@Ni(OH)2 nanostructures as battery-like electrodes for supercapacitors

被引：39

作者：

Lin, Jinghuang ^{[1
]}

Zheng, Xiaohang ^{[1
]}

Wang, Yiheng ^{[1
]}

Liang, Haoyan ^{[1
]}

Jia, Henan ^{[1
]}

Chen, Shulin ^{[1
]}

Qi, Junlei ^{[1
]}

Cao, Jian ^{[1
]}

Fei, Weidong ^{[1
]}

Feng, Jicai ^{[1
]}

机构：

[1] Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Heilongjiang, Peoples R China

来源：

INORGANIC CHEMISTRY FRONTIERS | 2018年 / 5卷 / 08期

基金：

中国国家自然科学基金;

关键词：

NANOSHEET ARRAYS; ASYMMETRIC SUPERCAPACITOR; NI FOAM; NANOWIRE ARRAYS; NICKEL FOAM; HIGH-ENERGY; PERFORMANCE; NI(OH)(2); LAYERS;

D O I：

10.1039/c8qi00347e

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Rationally constructing hybrid nanostructure electrodes is a promising approach for the development of high-performance supercapacitors. Here, we propose the fabrication of Ni3S2@Ni(OH)(2) nanostructures directly on Ni foam by employing hydrothermal and chemical bath processes. In this core-shell nanostructure, the design of conductive Ni3S2 nanorods directly on Ni foam without organic binders could ensure intimate contact and fast electron transport. Meanwhile, porous Ni(OH)(2) nanosheets coated on conductive Ni3S2 nanorods can effectively supply large surface areas with electrolyte and provide fast ion diffusion. Consequently, the as-fabricated Ni3S2@Ni(OH)(2) nanostructures showed good electrochemical performance, such as high capacitance up to 3.55 F cm(-2) and a good capacity retained after 10000 cycles of about 85%. Furthermore, an asymmetric device, based on Ni3S2@Ni(OH)(2) and activated carbon, was also fabricated and achieved a maximum energy density of 60.5 W h kg(-1) at 1159 W kg(-1). These results suggest that the as-designed core-shell Ni3S2@Ni(OH)(2) nanostructures demonstrated in this research are promising electrode materials for energy storage.

引用

页码：1985 / 1991

页数：7

共 48 条

[1] Hierarchical Co3O4@Ni(OH)2 core-shell nanosheet arrays for isolated all- solid state supercapacitor electrodes with superior electrochemical performance [J].