Three-dimensional porous MXene/layered double hydroxide composite for high performance supercapacitors

Ya Wang, Hui Dou, Jie Wang, Bing Ding, Yunling Xu, Zhi Chang, Xiaodong Hao

Research output: Contribution to journalArticlepeer-review

130 Citations (Scopus)

Abstract

In this work, an exfoliated MXene (e-MXene) nanosheets/nickel-aluminum layered double hydroxide (MXene/LDH) composite as supercapacitor electrode material is fabricated by in situ growth of LDH on e-MXene substrate. The LDH platelets homogeneously grown on the surface of the e-MXene sheets construct a three-dimensional (3D) porous structure, which not only leads to high active sites exposure of LDH and facile liquid electrolyte penetration, but also alleviates the volume change of LDH during the charge/discharge process. Meanwhile, the e -MXene substrate forms a conductive network to facilitate the electron transport of active material. The optimized MXene/LDH composite exhibits a high specific capacitance of 1061 F g−1 at a current density of 1 A g−1, excellent capacitance retention of 70% after 4000 cycle tests at a current density of 4 A g−1 and a good rate capability with 556 F g−1 retention at 10 A g−1.

Original languageEnglish
Pages (from-to)221-228
Number of pages8
JournalJournal of Power Sources
Volume327
DOIs
Publication statusPublished - 2016 Sep 30
Externally publishedYes

Keywords

  • 3D porous structure
  • Layered double hydroxide
  • MXene
  • Supercapacitors

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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