journal article·2021-07Open access

Flexible Ti3C2Tx/Graphene Films with Large‐Sized Flakes for Supercapacitors

Tiezhu Guo, Maosen Fu, Di Zhou, Lixia Pang, Jinzhan Su, Huixing Lin, Xiaogang Yao, Antonio Sergio Bezerra Sombra

Small Structures· Volume 2· Issue 7

Abstract

The new 2D Ti3C2T x MXene material is widely studied in the field of supercapacitors. However, the electrochemical performance is discounted due to Ti3C2T x film's compact self‐stacking phenomenon. Therefore, the synthesized flexible self‐supporting Ti3C2T x /graphene composite membrane effectively alleviates this inherent disadvantage. Unlike using the traditional reduction graphene oxide, the structural integrity and large‐sized flakes of graphene are synthesized through anhydrous ferric chloride (FeCl3)‐intercalated natural graphite flakes; the obtained composite membrane with high electron transfer capability due to graphene and Ti3C2T x nanosheets shows fewer defects and faster electrolyte ion transport kinetics due to high porosity and specific surface area. The assembled self‐supporting binder‐free symmetric supercapacitor shows an ultrahigh gravimetric energy density of 13.1 Wh kg−1 at a power density of 75 W kg−1. Herein, a new perspective for the mechanism analysis of inhibiting self‐stacking of MXene is provided.
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Research context

OpenAlex topics: MXene and MAX Phase Materials · Supercapacitor Materials and Fabrication · Advancements in Battery Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory of Multifunctional Materials and Structures Ministry of Education, & International Center for Dielectric Research School of Electronic Science and Engineering Xi'an Jiaotong University Xi'an 710049 Shaanxi China

Shaanxi Materials Analysis and Research Center School of Materials Science and Engineering Northwestern Polytechnical University Xi'an Shaanxi 710072 China

Micro-optoelectronic Systems Laboratories Xi'an Technological University Xi'an 710032 Shaanxi China

International Research Centre for Renewable Energy State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an 710049 China

Key Laboratory of Inorganic Functional Material and Device Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 China

Telecommunication and Materials Science and Engineering of Laboratory (LOCEM) Physics Department Federal University of Ceará (UFC) Pici Campus Fortaleza Ceará 60455-760 Brazil

Funding

National Natural Science Foundation of China

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