Samenvatting
As a clean power system, fuel cells (FCs) are known as superior electricity generators for
a wide range of applications, including home appliances and cars producing water as
exhaust. Carbon nano fibers (CNFs) are attractive support materials for FCs since these
materials provide high electrochemically stable electrodes and effective catalyst utilization
due to the high accessible surface area. The growth of CNFs was achieved on silica,
alumina, carbon, and silicon in different growth conditions, such as different temperature
and carbon source. Growth of CNFs on a carbon electrode has been rarely examined so
far in the literature. In the present study, the growth of CNFs on two different graphite
surfaces, carbon papers and graphite disks, is investigated to produce advanced
electrodes for a proton exchange membrane fuel cell. On the graphite disks, the growth is
rather random and mainly CNFs having diameters of 30-50 nm dominate on the surface.
Nanoparticle dipping method and homogenous deposition precipitation methods are
applied to investigate different deposition effects on CNF growth and morphology. One
side growth of CNF on carbon paper is achieved by using a homogenous deposition
precipitation of nickel with masking. The main factors that can affect the substrate
selection and desired deposition method of nickel are determined as nickel loading,
porosity changes of carbon paper, and the Pt loading difficulties for specific substrates.
Originele taal-2 | Engels |
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Titel | Proceedings of the International Fuel Cell Conference (European European Fuel Cell Forum 2009), 29 June – 2 July 2009, Luzern, Switzerland |
Redacteuren | F.A. Bruijn, de |
Plaats van productie | Switzerland, Luzern |
Pagina's | A0710-Abstract 099-1/6 |
Status | Gepubliceerd - 2009 |