Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7735364 | Journal of Power Sources | 2014 | 20 Pages |
Abstract
Low platinum loading electrode was successfully deposited by a modified pulse galvanic signal in H2PtCl6 electrolyte using carbon black as support directly on a GDL (Gas Diffusion Layer). SEM images of the deposition were composed by rough Pt particles of 50 nm leading to specific electrochemical surface area of 53 m2 gâ1. In spite of large particle size and a low cathode loading of 0.12 mg cmâ2, the proton exchange membrane fuel cell (PEMFC) fed with humidified H2 and O2 at 80 °C, 1.5 absolute bar reached 0.2 mA cmPtâ2 and 0.1 A mgâ1 at 0.9 VIR-free which were twice higher than a reference membrane electrodes assembly (MEA) with a cathode loaded at 0.4 mgPt.cmâ2. Such an active cathode electrode may be ascribed to a higher utilization rate of the platinum caused by an efficient catalyst deposition by electrochemical route.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
F. Fouda-Onana, N. Guillet, A.M. AlMayouf,