Title: Characteristics of a Platinum Black Catalyst Layer with Regard to Platinum Dissolution Phenomena in a Membrane Electrode Assembly
Abstract: The nature of platinum dissolution and precipitation in a polymer electrolyte membrane of a membrane electrode assembly (MEA) for a proton-exchange membrane fuel cell (PEMFC) was studied using a potential holding experiment at vs a reversible hydrogen electrode and high-resolution transmission electron microscopy. The electrochemically active surface area decreased depending on the holding time, and platinum deposition was observed in the polymer electrolyte membrane near a cathode catalyst layer. However, platinum dissolution and deposition out of the catalyst layer were greatly reduced when a platinum black electrode was used. In the experiment using a double-layered catalyst layer, platinum redeposited not on the carbon black surface but rather on the platinum black surface.
Publication Year: 2006
Publication Date: 2006-01-01
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 85
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot