| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1287557 | Journal of Power Sources | 2006 | 4 Pages |
Abstract
We describe an approach for manipulation of biodegradable chitosan and poly(vinyl sulfonic acid) (PVS) in layer-by-layer (LBL) film adsorbed onto gold via ionic attraction. H2PtCl6 was deposited onto the LBL film, with chitosan/PVS layers serving as templates to yield metallic platinum. In electrochemical experiments this LBL film exhibited electrochemical stability, low permeability to methanol and conduction/diffusion of proton to maintain the electrolytic connection. The Pt/chitosan/PVS electrode also displayed electroreduction of molecular oxygen. With these features, this Pt/chitosan/PVS film may be used between the catalyst layer and the proton exchange membrane (PEM) in direct methanol fuel cells (DMFC) and biofuel cells.
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Authors
Luciano C. Cogo, Marcos V. Batisti, Marcelo A. Pereira-da-Silva, Osvaldo N. Oliveira Jr., Francisco C. Nart, Fritz Huguenin,