Electrochemical Evolution of Pore-Confined Metallic Molybdenum in a Metal-Organic Framework (MOF) for All-MOF-Based Pseudocapacitors

Jun Hong Li, Yu Chuan Chen, Yi Sen Wang, Wei Huan Ho, Yu Juan Gu, Cheng Hsun Chuang, Yi Da Song, Chung Wei Kung

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

In this study, metallic molybdenum nanoparticles confined in the nanopores of a zirconium-based MOF (Zr-MOF), MOF-808, are prepared by a self-limiting decoration of spatially isolated Mo(VI) sites on the hexa-zirconium nodes of MOF-808, followed by the electrochemical reduction of Mo(VI) to metallic Mo. The obtained pore-confined Mo exhibits reversible redox activity in a neutral aqueous electrolyte and serves as the pseudocapacitive material for negative electrodes. By introducing another MOF-based pseudocapacitive material that can be used for positive electrodes, a manganese-decorated Zr-MOF-carbon nanotube nanocomposite, as a demonstration, all-Zr-MOF-based asymmetric pseudocapacitors with an aqueous electrolyte are fabricated.

Original languageEnglish
Pages (from-to)6258-6267
Number of pages10
JournalACS Applied Energy Materials
Volume3
Issue number7
DOIs
Publication statusPublished - 2020 Jul 27

All Science Journal Classification (ASJC) codes

  • Chemical Engineering (miscellaneous)
  • Energy Engineering and Power Technology
  • Electrochemistry
  • Materials Chemistry
  • Electrical and Electronic Engineering

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