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A binder-free electrode based on Ti3C2Tx-rGO aerogel for supercapacitors
被引:59
|作者:
Guo, Bingyan
[1
,2
]
Tian, Jie
[1
,2
]
Yin, Xianglu
[1
,2
]
Xi, Guoqiang
[1
,2
]
Wang, Wu
[1
,2
]
Shi, Xiaofei
[1
,2
]
Wu, Wei
[1
,2
]
机构:
[1] Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China
[2] Beijing Univ Chem Technol, Coll Chem Engn, Beijing 100029, Peoples R China
基金:
中国国家自然科学基金;
关键词:
Energy storage;
Ti3C2Tx;
Aerogel;
Reduced graphene oxide;
Binder-Free;
Symmetric supercapacitors;
ENHANCED ELECTROCHEMICAL PERFORMANCES;
PSEUDOCAPACITIVE ELECTRODES;
ENERGY-STORAGE;
CARBIDE MXENE;
GRAPHENE;
COMPOSITE;
CARBON;
NANOSHEETS;
NETWORKS;
SILICATE;
D O I:
10.1016/j.colsurfa.2020.124683
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:
MXene, a new two-dimensional (2D) material, has been extensively studied in the field of energy storage. However, the restacking and inferior stability of MXene severely affect their development. Herein, we fabricated a Ti3C2Tx-rGO aerogel through ascorbic acid-assisted hydrothermal treatment. It could effectively reduce the restacking of MXene and enhance the electrochemical properties of electrode material. The redox kinetics of electrode materials were analyzed. The diffusion-controlled process contributions from Ti3C2Tx/rGO-4 were significantly higher than Ti3C2Tx owing to the more exposed active sites after reduced graphene oxide (rGO) intercalation and increased layer spacing. Ti3C2Tx/rGO-4 aerogel binder-free electrode achieved a special capacitance of 313 F g(-1) (about 174 % of Ti3C2Tx) at 1 A g(-1). Moreover, Ti3C2Tx/rGO-4 symmetric supercapacitor demonstrated an outstanding energy density of 7.5 Wh kg(-1) at a power density of 500W kg(-1) when the operated potential was at 1 V, showing a good application prospect.
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页数:9
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