Electron-Conductive Metal-Organic Framework, Fe(dhbq)(dhbq = 2,5-Dihydroxy-1,4-benzoquinone): Coexistence of Microporosity and Solid-State Redox Activity

Kazuki Kon, Kaiji Uchida, Kentaro Fuku, Shuntaro Yamanaka, Bin Wu, Daiki Yamazui, Hiroaki Iguchi, Hiroaki Kobayashi, Yoshiyuki Gambe, Itaru Honma, Shinya Takaishi

Research output: Contribution to journalArticlepeer-review

Abstract

Redox-active metal-organic frameworks (MOFs) have great potential for use as cathode materials in lithium-ion batteries (LIBs) with large capacities because the organic ligands can undergo multiple-electron redox processes. However, most MOFs are electrical insulators, limiting their application as electrode materials. Here, we report an electron-conductive MOF with a 2,5-dihydroxy-1,4-benzoquinone (dhbq) ligand, Fe(dhbq). This compound had an electrical conductivity of 5 × 10-6 S cm-1 at room temperature due to d-πinteractions between the Fe ion and the ligand and the permanent microporosity. Fe(dhbq) had an initial discharge capacity of 264 mA h g-1, corresponding to the two-electron redox process of dhbq.

Original languageEnglish
Pages (from-to)38188-38193
Number of pages6
JournalACS Applied Materials and Interfaces
Volume13
Issue number32
DOIs
Publication statusPublished - 2021 Aug 18

Keywords

  • cathode material
  • electrical conductivity
  • lithium-ion battery
  • metal-organic frameworks
  • redox-active

ASJC Scopus subject areas

  • Materials Science(all)

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