文献类型：期刊文献

英文题名：Two-Dimensional Titanium Carbide/RGO Composite for High-Performance Supercapacitors

作者：Zhao, Chongjun[1];Wang, Qian[1];Zhang, Huang[2,3];Passerini, Stefano[2,3];Qian, Xiuzhen[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[2]Helmholtz Inst Ulm, Helmholtzstr 11, D-89081 Ulm, Germany;[3]Karlsruhe Inst Technol, POB 3640, D-76021 Karlsruhe, Germany

年份：2016

卷号：8

期号：24

起止页码：15661

外文期刊名：ACS APPLIED MATERIALS & INTERFACES

收录：;EI(收录号：20162602546198);WOS:【SCI-EXPANDED(收录号:WOS:000378584800088)】；

基金：We are grateful to the Shanghai Natural Science Foundation (13ZR1411900). H.Z. acknowledges financial support from the Chinese State Scholarship Fund (201408310121).

语种：英文

外文关键词：Ti3C2Tx; MXene; 2D material; reduced graphene oxide (RGO); supercapacitors

摘要：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.