Boosting the performance of formic acid microfluidic fuel cell: Oxygen annealing enhanced Pd@graphene electrocatalyst

Dawei Li, Hong Xu, Li Zhang, Dennis Y. C. Leung, Filipe Vilela, Huizhi Wang, Jin Xuan

Research output: Contribution to journalArticle

9 Citations (Scopus)
42 Downloads (Pure)

Abstract

A new oxygen-annealing treatment for Pd supported on graphene was employed to enhance the electro-catalytic performance in formic acid microfluidic fuel cells. Experiments show that both the electro-oxidation reactivity and CO tolerance of the annealed catalyst are significantly improved. When testing the fuel cell, the maximum power density with annealed catalyst is 41% higher than the unannealed Pd@graphene catalyst, and 85% higher than Pd@Vulcan XC-72. This enhancement is attributed to the Pdsingle bondO bond formation during the oxygen annealing step, which induces greater CO electro-oxidation reactivity.
Original languageEnglish
Pages (from-to)10249–10254
Number of pages6
JournalInternational Journal of Hydrogen Energy
Volume41
Issue number24
Early online date21 May 2016
DOIs
Publication statusPublished - 29 Jun 2016

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