dorsal/arxiv
View SchemaA Comparison of Physical Properties and Fuel Cell Performance of Nafion and Zirconium Phosphate/Nafion Composite Membranes
| Authors | Chris Yang, S. Srinivasan, A. B. Bocarsly, S. Tulyani, J. B. Benziger |
|---|---|
| Categories | |
| ArXiv ID | physics/0310029 |
| URL | https://arxiv.org/abs/physics/0310029 |
Abstract
The physio-chemical properties of Nafion 115 and a composite Nafion 115/Zirconium Phosphate (25wt%) membranes are compared. The composite membrane takes up more water than Nafion at the same water activity. However, the proton conductivity of the composite membrane is slightly less than that for Nafion 115. Small angle X-ray scattering shows the hydrophilic phase domains in the composite membrane are spaced further apart than in Nafion 115, and the composite membrane shows less restructuring with water uptake. Despite the lower proton conductivity of the composite membranes they display better fuel cell performance than Nafion 115 when the fuel cell is operated under-humidified. It is suggested that the composite membrane has a greater rigidity that accounts for its improved fuel cell performance.
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"abstract": "The physio-chemical properties of Nafion 115 and a composite Nafion\n115/Zirconium Phosphate (25wt%) membranes are compared. The composite membrane\ntakes up more water than Nafion at the same water activity. However, the proton\nconductivity of the composite membrane is slightly less than that for Nafion\n115. Small angle X-ray scattering shows the hydrophilic phase domains in the\ncomposite membrane are spaced further apart than in Nafion 115, and the\ncomposite membrane shows less restructuring with water uptake. Despite the\nlower proton conductivity of the composite membranes they display better fuel\ncell performance than Nafion 115 when the fuel cell is operated\nunder-humidified. It is suggested that the composite membrane has a greater\nrigidity that accounts for its improved fuel cell performance.",
"arxiv_id": "physics/0310029",
"authors": [
"Chris Yang",
"S. Srinivasan",
"A. B. Bocarsly",
"S. Tulyani",
"J. B. Benziger"
],
"categories": [
"physics.chem-ph"
],
"title": "A Comparison of Physical Properties and Fuel Cell Performance of Nafion and Zirconium Phosphate/Nafion Composite Membranes",
"url": "https://arxiv.org/abs/physics/0310029"
},
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