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 language | English |
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Pages (from-to) | 10249–10254 |
Number of pages | 6 |
Journal | International Journal of Hydrogen Energy |
Volume | 41 |
Issue number | 24 |
Early online date | 21 May 2016 |
DOIs | |
Publication status | Published - 29 Jun 2016 |