ZIF-8-based oxygen reduction reaction catalyst prepared from one-pot and stepwise ion- and liquid-assisted grinding modified with tris-1,10-phenanthroline iron (II) perchlorate

Wonseok Yang, Dowon Cha, Wooyeol Lee, Yongchan Kim

Research output: Contribution to journalArticlepeer-review

Abstract

In this study, a one-pot ion- and liquid-assisted grinding (ILAG) synthesis of ZIF-8-based catalysts was proposed and compared with a conventional stepwise synthesis to determine an appropriate method for proton exchange membrane fuel cells (PEMFCs). The performance characteristics of one-pot- and stepwise-synthesis catalysts were measured by various physicochemical and electrochemical characterization methods. In lab-scale production, the material cost of the one-pot-synthesis catalyst was seven times lower than that of the stepwise-synthesis catalyst. The surface structural characteristics of the one-pot- and stepwise-synthesis catalysts were identical, and the two catalysts showed similar onset potentials that were close to that of a Pt/C. However, based on PEMFC tests, the maximum power density of the one-pot-synthesis catalyst was lower than that of the stepwise-synthesis catalyst owing to the smaller micropore area of one-pot-synthesis catalyst. Nonetheless, the difference between maximum power densities was only 9.6% despite the large disparity in the material cost. Thus, the proposed one-pot-synthesis catalyst can be recommended as a promising non-platinum group metal (PGM) catalyst, but further research to improve its micropore area and performance is required.

Original languageEnglish
Pages (from-to)3846-3856
Number of pages11
JournalInternational Journal of Hydrogen Energy
Volume47
Issue number6
DOIs
Publication statusPublished - 2022 Jan 19

Keywords

  • Ion- and liquid-assisted grinding
  • Non-platinum group metal catalyst
  • One-pot synthesis
  • Oxygen reduction reaction
  • PEMFC

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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