Polymer electrolyte membrane fuel cells (PEM-FCs) are
becoming an increasingly important technology in both stationary and mobile
applications. Problems impeding the development of fuel cell technology mainly
involve electrocatalysts and electrolyte membranes. Commercially available
membranes limit the operating temperature range to an approximate maximum of
80°C, and consequently, catalyst poisoning can result from overheating, creating
serious problems.
To overcome these problems, researchers at ASU have
developed membrane materials for PEM-FCs that can operate at temperatures up to
200°C. Operation at such high temperatures improves the CO tolerance of Pt
electrodes, and allows for use of ‘dirty hydrogen’. Furthermore, this technology
does not require hydration nor use of other problematic materials such as
phosphoric acids for operation.
Potential Applications
- Backup power generation
- Portable systems
- Automotive industries
Benefits and Advantages
- Material can function up to 200°C and requires no cooling
- Material can function with hydrocarbon fuels
- Material exhibits endurance to harsh physical conditions
and overcomes ‘catalyst poisoning’
- No hydration needed
- Multiple approaches to fabrication make the technology
better suited to market fabrication.
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