The Priority and Challenge of High-Power Performance of Low-Platinum Proton-Exchange Membrane Fuel Cells
General Motors (United States)
Indexed incrossrefpubmed
Abstract
Substantial progress has been made in reducing proton-exchange membrane fuel cell (PEMFC) cathode platinum loadings from 0.4-0.8 mgPt/cm(2) to about 0.1 mgPt/cm(2). However, at this level of cathode Pt loading, large performance loss is observed at high-current density (>1 A/cm(2)), preventing a reduction in the overall stack cost. This next developmental step is being limited by the presence of a resistance term exhibited at these lower Pt loadings and apparently due to a phenomenon at or near the catalyst surface. This issue can be addressed through the design of catalysts with high and stable Pt dispersion as well as through development and implementation of ionomers designed to interact with Pt in a way…
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Authors
2Topics & keywords
Topics
Keywords
- Proton exchange membrane fuel cell
- Platinum
- Fuel cells
- Power (physics)
- Membrane
- Nuclear engineering
- Materials science
- Chemistry
UN Sustainable Development Goals
- Affordable and clean energy
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