Direct growth of highly organized, 2D ultra-thin nano-accordion Ni-MOF@NiS2@C core-shell for high performance energy storage device

Chang Soo Lee, Jeong Min Lim, Jung Tae Park, Jong Hak Kim

Research output: Contribution to journalArticlepeer-review

54 Citations (Scopus)

Abstract

Metal-organic framework (MOF) as an active material is a state-of-the-art challenge to improve performance of energy storage devices due to its high porosity, ion diffusion channel and provision of redox sites. Nevertheless, the development of next-generation devices requires overcoming shortcomings such as low electrical conductivity and low MOF stability. Herein, the in situ growth of a nickel-based MOF on a Ni foam and the formation of a Ni-MOF@NiS2@C (NMSC) core-shell hetero-nanostructure is reported to overcome the challenge of using MOFs as active materials. Additionally, a surfactant-assisted approach is demonstrated to construct an ultra-thin 2D nano-accordion structure with interstitial gaps between the nanosheets. The unique nano-accordion structure facilitates faster ion diffusion and decreases the total resistance owing to the excellent charge transfer ability. In particular, the solid-state flexible supercapacitor exhibited a high performance with a specific capacitance of 283.5 F g−1 with an excellent energy density of 77.2 W h kg−1 at a power density of 7000 W kg−1.

Original languageEnglish
Article number126810
JournalChemical Engineering Journal
Volume406
DOIs
Publication statusPublished - 2021 Feb 15

Bibliographical note

Publisher Copyright:
© 2020 Elsevier B.V.

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • Environmental Chemistry
  • General Chemical Engineering
  • Industrial and Manufacturing Engineering

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