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

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2020年 / 595卷 / 595期

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.

引用

页数：9