Emerging Porous Solid Electrolytes for Hydroxide Ion Transport

Dong Won Kang, Minjung Kang, Hongryeol Yun, Hyein Park, Chang Seop Hong

Research output: Contribution to journalReview articlepeer-review

Abstract

Anion exchange membrane fuel cells (AEMFCs) offer several advantages over proton exchange membrane fuel cells, such as the use of a non-precious metal catalyst, but these cells suffer from various issues related to OH-conducting electrolytes, including low conductivity and the formation of K2CO3 salt. These issues need to be resolved for the widespread use of AEMFCs. Recently, many studies have focused on developing excellent ion-conductive electrolytes using porous materials based on metal–organic and covalent organic frameworks. However, most of this research is biased toward proton-conducting electrolytes; to the best of the authors’ knowledge, reviews addressing OH-conducting electrolytes using porous materials have not been reported thus far. This review discusses OH-conducting porous crystalline materials and their membranes in terms of different synthetic strategies, conduction mechanisms, and experimental modalities for the design and development of future anion conductive electrolytes in fuel cells.

Original languageEnglish
JournalAdvanced Functional Materials
DOIs
Publication statusAccepted/In press - 2021

Keywords

  • anion exchange membrane fuel cell
  • composite membrane
  • covalent-organic framework
  • hydroxide ion transport
  • metal-organic framework

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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