Ionic liquid modified Pt/C electrocatalysts for cathode application in proton exchange membrane fuel cells

Research output: Contribution to journalArticle

Authors

Colleges, School and Institutes

External organisations

  • Hebei University of Technology
  • School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom.

Abstract

The modification of Pt/C catalyst by using ionic liquids to improve their catalyst activities has been reported by many researchers, but their practical behavior in operating fuel cells is still unknown. In this work, we study the ionic liquid modified Pt/C nanoparticle catalysts within cathodes for proton exchange membrane fuel cells. The influence of the ionic liquid amount, adsorption times and dispersing solvents are investigated. The experiment results show the best performance enhancement is achieved through two-time surface modification with 2 wt-% ionic liquid solution. The mechanisms are explored with the attribution to the high oxygen solubility in the ionic liquid enabling an improved oxygen diffusion in micropores and to good hydrophobicity facilitating water expelling from the active sites in fuel cell operation.[Figure not available: see fulltext.].

Details

Original languageEnglish
Pages (from-to)695-701
Number of pages7
JournalFrontiers of Chemical Science and Engineering
Volume13
Issue number4
Early online date24 Jul 2019
Publication statusPublished - 1 Dec 2019

Keywords

  • adsorption, electrocatalyst, electrode, ionic liquid, oxygen reduction reaction, PEMFC

ASJC Scopus subject areas