A Cr2O3/MWCNTs composite as a superior electrode material for supercapacitor

被引:43
作者
Chen, Bingwei [1 ,2 ]
Wang, Yanfang [2 ]
Li, Chunyang [1 ]
Fu, Lijun [1 ]
Liu, Xiang [1 ]
Zhu, Yusong [1 ]
Zhang, Lixin [2 ]
Wu, Yuping [1 ,2 ]
机构
[1] Nanjing Tech Univ, Inst Electrochem Energy Storage, Sch Energy Sci & Engn, Nanjing 211816, Jiangsu, Peoples R China
[2] Fudan Univ, Shanghai Key Lab Mol Catalysis & Innovat Mat, NEML, Dept Chem, Shanghai 200433, Peoples R China
来源
RSC ADVANCES | 2017年 / 7卷 / 40期
关键词
ELECTROCHEMICAL PERFORMANCE; CATHODE; GRAPHENE; ANODE; CAPABILITY; NANOWIRES; AEROGELS; FACILE; HYBRID; CR2O3;
D O I
10.1039/c7ra01954h
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
It has been a challenge to achieve a good capacitive performance for Cr-based oxides, and only few studies have been reported on these oxides. Herein, a composite of chromium oxide (Cr2O3) and multi-walled carbon nanotubes (MWCNTs) was prepared by a simple hydrothermal procedure followed by thermal decomposition. The Cr2O3 nanoparticles were evenly decorated on the surface of MWCNTs. The prepared Cr2O3/MWCNTs composite exhibited superior electrochemical performance in a 1 M KOH electrolyte, i.e., 257 F g(-1) at the current density of 0.25 A g(-1), and the capacity fade was only 12% after 3000 cycles. In addition, the Cr2O3/MWCNTs//AC asymmetric capacitor has high energy density (15.2 W h kg(-1) at 266 W kg(-1)). The abovementioned results for the first time indicate the potential application of Cr2O3 as an electrode material for supercapacitors.
引用
收藏
页码:25019 / 25024
页数:6
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