期刊
ACS APPLIED MATERIALS & INTERFACES
卷 8, 期 24, 页码 15661-15667出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b04767
关键词
Ti3C2Tx; MXene; 2D material; reduced graphene oxide (RGO); supercapacitors
资金
- Shanghai Natural Science Foundation [13ZR1411900]
- Chinese State Scholarship Fund [201408310121]
Ti3C2Tx, a 2D titanium carbide in the MXenes family, is obtained from Ti3AlC2 through selective etching of the Al layer. Due to its good conductivity and high volumetric capacitance, Ti3C2Tx is regarded as a promising candidate for supercapacitors. In this paper, the fabrication of Ti3C2Tx/RGO composites with different proportions of Ti3C2Tx and RGO is reported, in which RGO acts as a conductive bridge to connect different Ti3C2Tx blocks and a matrix to alleviate the volume change during charge/discharge process. In addition, RGO nanosheets can serve as a second nanoscale current collector and support as well for the electrode. The electrochemical performance of the as fabricated Ti3C2Tx/RGO electrodes, characterized by CV, GCD, and EIS, are also reported. A highest specific capacitance (C-s) of 154.3 F/g at 2 A/g is obtained at the Ti3C2Tx: RGO weight ratio of 7:1 combined with an outstanding capacity retention (124.7 F/g) after 6000 cycles at 4 A/g.
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