Ni, Co and Mn doped SnS2-graphene aerogels for supercapacitors

被引：61

作者：

Chu, Hang ^{[1
]}

Zhang, Fangfang ^{[1
]}

Pei, Liyuan ^{[1
]}

Cui, Zheng ^{[1
]}

Shen, Jianfeng ^{[1
]}

Ye, Mingxin ^{[1
]}

机构：

[1] Fudan Univ, Inst Special Mat & Technol, Shanghai 200433, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2018年 / 767卷

关键词：

Graphene; Aerogel; SnS2; Doping; Supercapacitor; LITHIUM-ION BATTERIES; FACILE SYNTHESIS; SNS2; NANOFLAKES; GRAPHENE; PERFORMANCE; NANOCRYSTALS; ELECTRODES; COMPOSITE; ANODE;

D O I：

10.1016/j.jallcom.2018.07.126

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：

Ni, Co, Mn doped SnS2-graphene aerogel (M-SnS2-GA) supercapacitor materials were synthesized by solvothermal method using metal chlorides and thioacetamide as precursors. The obtained samples formed complex 3D network structures of 2D nanosheets-graphene aerogels as the scanning electron microscopy images indicated. According to the electrochemical tests, the existence of graphene aerogel and doped metal ions fundamentally improved the electrochemical performance of SnS2. Mn-SnS2-GA exhibited the highest specific capacitance among them (523.51 F g(-1) at the scan rate of 5 mV s(-1)), which is almost three times as high as that of SnS2 (171.56 F g(-1)). Meanwhile, Mn-SnS2-GA also showed excellent stability in cycling test (98.57% retention after 2000 cycles at 10 A/g). The effects of the structure and doping on the performance of the composites were deeply investigated. In addition, a symmetric supercapacitor device was also assembled and tested to confirm the application prospects. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：583 / 591

页数：9

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