ZIF 67 Based Highly Active Electrocatalysts as Oxygen Electrodes in Water Electrolyzer

Shraboni Ghoshal, Katherine Hurst, Bryan Pivovar, Shaun Alia, Sarah Zaccarine, Svitlana Pylypenko, Grace Anderson, Madison Martinez

Research output: Contribution to journalArticlepeer-review

33 Scopus Citations

Abstract

Mitigating high overpotential losses originating from the sluggish oxygen evolution reaction (OER) during water electrolysis is key to establishing a sustainable hydrogen generation technique. Herein we report a Co-imidazolate framework (ZIF 67) as an OER catalyst that exhibits high activity in both a three electrode cell and an electrolyzer. Additionally, Fe, Ni, and Zn have been incorporated into ZIF 67 to evaluate their effects on the OER activity of ZIF 67. Due to the high charge conductivity of ZIF 67, none of the reported catalyst was carbonized at high temperature, a process that is generally accompanied by significant mass loss. Hence, in addition to being highly active, these catalysts are scalable which makes them promising candidates for application in commercial power markets.

Original languageAmerican English
Pages (from-to)5568-5576
Number of pages9
JournalACS Applied Energy Materials
Volume2
Issue number8
DOIs
StatePublished - 26 Aug 2019

Bibliographical note

Publisher Copyright:
© 2019 American Chemical Society.

NREL Publication Number

  • NREL/JA-5900-74149

Keywords

  • AEM electrolysis
  • metal organic framework
  • non-precious-metal catalyst
  • oxygen evolution reaction
  • ZIF 67

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