Carbon nanotubes enhance flexible MXene films for high-rate supercapacitors

  • He Chen
  • Lanyong Yu
  • Zifeng Lin
  • Qizhen Zhu
  • Peng Zhang
  • Ning Qiao
  • Bin XuEmail author
Energy materials


MXenes are 2D transition metal carbides or nitrides with high electrical conductivity that have attracted great attention as promising electrode materials that supersede carbon-based material designed for supercapacitors. However, the aggregation and self-restacking of MXene 2D nanosheets limit their high-rate performance. In this work, flexible and conductive Ti3C2Tx MXene/carbon nanotubes (CNTs) composite film was prepared through a simple vacuum filtration of the Ti3C2Tx MXene and CNTs suspension mixture. The CNTs integrated MXene nanosheets can effectively prevent the restacking while creating fast ion transport channels for enhanced capacitance. The designed films exhibit excellent performance as supercapacitor electrodes with high capacitance of 300 F g−1 at 1 A g−1 with superior rate performance of 199 F g−1 even at 500 A g−1, together with excellent cyclic stability of 92% capacitance retention after 10000 cycles at 20 A g−1. The excellent workability demonstrates potential application of the system for flexible, portable and highly integrated supercapacitors.



This work was financially supported by the National Natural Science Foundation of China (NSFC, 51572011 and 51802012) and the National Key Research and Development Program of China (2017YFB0102204).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no competing interests.

Supplementary material

10853_2019_4003_MOESM1_ESM.docx (46 kb)
Supplementary material 1 (DOCX 46 kb)


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Authors and Affiliations

  1. 1.State Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Electrochemical Process and Technology for MaterialsBeijing University of Chemical TechnologyBeijingChina
  2. 2.College of Materials Science and EngineeringSichuan UniversityChengduChina

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