C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
C23C 26/00 (2006.01) H01M 4/88 (2006.01) H01M 4/92 (2006.01)
Patent
CA 2518305
The invention is directed to a simple method for preparing highly dispersed, highly loaded platinum metal elements on various carbon substrates, including conductive carbon black, which is utilized in fuel cell electrodes. Utilizing carbon with a controlled point of zero charge (PZC) and maintaining a desired pH value throughout the adsorption of metal onto the carbon substrate, a high metal loading is achieved for a given surface area of the carbon substrate.
L'invention porte sur une méthode simple de dépôt sur différents substrats de carbone dont du noir de charbon conducteur pour électrodes de pile à combustible d'éléments métalliques de platine à forte dispersion et forte charge. On utilise à cet effet un carbone à point de charge nulle régulé (PZC) que l'on maintient au pH désiré pendant l'adsorption du métal par le substrat, ce qui permet d'obtenir une forte charge de métal par unité de surface du substrat.
Regalbuto John R.
Xianghong Hao
Fetherstonhaugh & Co.
The Board Of Trustees Of The University Of Illinois
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