New carbon materials as a support for oxygen electrode in fuel cells
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Porous C/C (carbonised resin/carbon fibre) composite, with a mass fraction of carbonised resin of 50% or 28%, surface doped with Pt, Ag, CoO, La2NiO4+La2CoO4 and La2NiO4+La2CoO4+Pt was used as a support of oxygen electrode in alkaline solution. The effects of various dopants on the oxygen reduction rate were compared on the basis 2 of discharge behaviour of an air/zinc couple. A maximum power density amounting to 40 mV/cm(2) was observed for the C/C composite with the resin fraction of 50%, catalyzed by an oxide mixture La2NiO4 + La2CoO4.
Keywords:carbon/carbon composites / electrocatalyst / oxygen (Air) electrodes / zinc-air fuel cells
Source:Materials Science Forum, 2003, 413, 225-230
- 4th Yugoslav-Materials-Research-Society Conference, Sep 10-14, 2001, Herceg Novi, Yugoslavia