Ultra-thin NiS nanosheets as advanced electrode for high energy density supercapacitors

被引：33

作者：

Yan, Hailong ^{[1
,2
]}

Zhu, Kejia ^{[1
,2
]}

Liu, Xu ^{[1
,2
]}

Wang, Yinghui ^{[1
,2
]}

Wang, Yangbo ^{[1
,2
]}

Zhang, Deyang ^{[1
,2
]}

Lu, Yang ^{[1
,2
]}

Peng, Tao ^{[1
,2
]}

Liu, Yunxin ^{[3
]}

Luo, Yongsong ^{[1
,2
]}

机构：

[1] Xinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China

[2] Xinyang Normal Univ, Key Lab Microelect & Energy Henan Prov, Xinyang 464000, Peoples R China

[3] Hunan Univ Sci & Technol, Dept Phys & Elect Sci, Xiangtan 411201, Peoples R China

来源：

RSC ADVANCES | 2020年 / 10卷 / 15期

基金：

中国国家自然科学基金;

关键词：

HIGH-PERFORMANCE SUPERCAPACITOR; CARBON; GROWTH; ARRAYS;

D O I：

10.1039/c9ra09486e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Low energy density of supercapacitors is one of the major downsides for their practical applications. Here, a simple hydrothermal method was developed to synthesize NiS nanosheets on Ni foam. NiS nanosheets with a rough surface promise large electroactive surface area for energy storage, and show an ultra-high capacitance of 2587 F g(-1) at a scan rate of 0.2 A g(-1) (corresponding to the discharge time of 5563 s). The NiS nanosheets also present an outstanding cycling stability of 95.8% after 4000 cycles. As a positive electrode material for hybrid supercapacitors (HSC), NiS nanostructures provide a broad voltage window of 1.7 V. Our device also shows a high energy density of 38 W h kg(-1) at a power density of 1.5 kW kg(-1).

引用

页码：8760 / 8765

页数：6

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