Design and Development of High-Performance Hybrid Inorganic-Organic Fuel Cell Membranes
Christel Laberty-Robert, Ozlem Sel, Karine Valle, Franck Perreira +1
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65% confidenceResearchers developed a sol-gel strategy to synthesize hybrid organic-inorganic membranes for PEMFC, achieving conductivity comparable to Nafion at 60°C under 100% humidity.
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Abstract
We develop a sol-gel based strategy for the synthesis of hybrid organic-inorganic membranes for PEMFC. This approach consists in growing a functionalized (-SO3H) mesoporous SiO2 network in a hydrophobic fluorinated polymer (PVDF-co-HFP). We used different processes to fabricate these membranes including solvent casting and spray-coating. These different methods allow a control of the microstructure of the inorganic network in the polymer at different scales which in turn does influence proton transport throughout the inorganic mesostructured network. The interfacial area between the hydrophobic and hydrophilic domains can be tuned and conductivity values comparable to Nafion at 60{degree sign}C under 100% humidity were achieved.
Key findings
- Hybrid organic-inorganic membranes were synthesized using a sol-gel approach, combining a functionalized mesoporous SiO2 network with a hydrophobic fluorinated polymer.
- Different fabrication methods, including solvent casting and spray-coating, were used to control the microstructure of the inorganic network.
- The interfacial area between hydrophobic and hydrophilic domains was tuned, influencing proton transport throughout the membrane.
Keywords
Identifiers
- Journal
- ECS Transactions
- Year
- 2009