title: Two-Dimensional Titanium Carbide/RGO Composite for High-Performance Supercapacitors.
abstract: 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 (Cs) 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.
authors.affiliation: School of Materials Science and Engineering, East China University of Science and Technology , Shanghai 200237, P. R. China.
authors.forename: Chongjun
authors.initials: C
authors.lastname: Zhao
authors.affiliation: School of Materials Science and Engineering, East China University of Science and Technology , Shanghai 200237, P. R. China.
authors.forename: Qian
authors.initials: Q
authors.lastname: Wang
authors.affiliation: Helmholtz Institute Ulm , Helmholtzstrasse 11, D-89081 Ulm, Germany.|Karlsruhe Institute of Technology , PO Box 3640, D-76021 Karlsruhe, Germany.
authors.forename: Huang
authors.initials: H
authors.lastname: Zhang
authors.affiliation: Helmholtz Institute Ulm , Helmholtzstrasse 11, D-89081 Ulm, Germany.|Karlsruhe Institute of Technology , PO Box 3640, D-76021 Karlsruhe, Germany.
authors.forename: Stefano
authors.initials: S
authors.lastname: Passerini
authors.affiliation: School of Materials Science and Engineering, East China University of Science and Technology , Shanghai 200237, P. R. China.
authors.forename: Xiuzhen
authors.initials: X
authors.lastname: Qian
keywords: 2D material; MXene; Ti3C2Tx; reduced graphene oxide (RGO); supercapacitors