Carbon Supported Ruthenium as Anode Catalyst for Alkaline Direct Borohydride Fuel Cells
By Christoph Grimmer and Robert Zacharias and Maximilian Grandi and Bernd Cermenek and Alexander Schenk and Stephan Weinberger and Franz-Andreas Mautner and Brigitte Bitschnau and Viktor Hacker
Published in The Journal of Physical Chemistry C
2015
Abstract
Electrochemical borohydride oxidation on nanodispersed ruthenium supported on high surface area carbon (Ru/C) is investigated by means of cyclic voltammetry, CO-stripping, rotating disk electrode experiments and chronoamperometry as well as direct borohydride fuel cell tests in a mixed electrolyte approach. All experimental results of Ru/C are compared to a commercially available Pt/C catalyst. Ru/C shows high Coulombic efficiency with a complete eight electron transfer at low anodic potentials. The electrochemical active potential window is ?0.05