Flexible, all-solid-state 1.4 V symmetric supercapacitors with high energy density based on comb polymer electrolyte and 1D hierarchical carbon nanotube electrode

Chang Soo Lee, Sung Hoon Ahn, Dong Jun Kim, Jae Hun Lee, Arumugam Manthiram, Jong Hak Kim

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

A high-performance solid-state supercapacitor (ssSC) based on an amphiphilic comb polymer (CP) solid electrolyte and an electrode comprising porous one-dimensional (1D) hierarchical carbon nanotubes is reported. The solid electrolyte is prepared from the amphiphilic CP, poly(vinylidene fluoride-co-chlorotrifluoroethylene)-g-poly(oxyethylene methacrylate) (P(VDF-co-CTFE)-g-POEM) comprising hydrophobic P(VDF-co-CTFE) main chains and hydrophilic POEM side chains, which provide good mechanical strength and high ionic conductivity, respectively. Preferential interaction of POEM with the ionic liquid (IL) and microphase-separated structures of CP/IL electrolytes are demonstrated. Two types of 1D hierarchical carbon nanotubes are prepared by a metal–organic-framework-derived approach using 1D tellurium as the template. The ssSC fabricated with the CP electrolyte displays a high specific capacitance of 239.3 F g−1, which is much higher than that achieved with the widely used conventional poly(vinyl alcohol) electrolytes. The flexible ssSC fabricated with carbon cloth as electrode substrate exhibits a remarkable specific capacitance of 220.8 F g−1.

Original languageEnglish
Article number228477
JournalJournal of Power Sources
Volume474
DOIs
Publication statusPublished - 2020 Oct 31

Bibliographical note

Publisher Copyright:
© 2020 Elsevier B.V.

All Science Journal Classification (ASJC) codes

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

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