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Thermal Stability of Proton Conducting Acid Doped Polybenzimidazole in Simulated Fuel Cell Environments
Abstract
Recently, polybenzimidazole membrane doped with phosphoric acid (PBI) was found to have promising properties for use as a polymer electrolyte in a high temperature ( ca. 150 to 200°C) proton exchange membrane direct methanol fuel cell. However, operation at 200°C in strongly reducing and oxidizing environments introduces concerns of the thermal stability of the polymer electrolyte. To simulate the conditions in a high temperature fuel cell, PBI samples were loaded with fuel cell grade platinum black, doped with ca. 480 mole percent phosphoric acid ( i.e. , 4.8 H 3 PO 4 molecules per PBI repeat unit) and heated under atmospheres of either nitrogen, 5% hydrogen, or air in a thermal gravimetric analyzer. The products of decomposition were taken directly into a mass spectrometer for identification. In all cases weight loss below 400°C was found to be due to loss of water. Judging from the results of these tests, the thermal stability of PBI is more than adequate for use as a polymer electrolyte in a high temperature fuel cell.
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Citations
Cited by
On the development of proton conducting polymer membranes for hydrogen and methanol fuel cells
Kreuer, K. D. (2001) · Journal of Membrane Science · doi:10.1016/s0376-7388(00)00632-3 · Cited by 2,969
Methanol oxidation and direct methanol fuel cells: a selective review
Wasmus, S., & Küver, A. (1999) · Journal of Electroanalytical Chemistry · doi:10.1016/s0022-0728(98)00197-1 · Cited by 1,308
Self-citationWater transport in polymer electrolyte membrane fuel cells
Jiao, K., & Li, X. (2011) · Progress in Energy and Combustion Science · doi:10.1016/j.pecs.2010.06.002 · Cited by 1,086
Development of ionomer membranes for fuel cells
Kerres, J. A. (2001) · Journal of Membrane Science · doi:10.1016/s0376-7388(00)00631-1 · Cited by 1,022
A review of polymer electrolyte membranes for direct methanol fuel cells
Neburchilov, V., Martin, J., Wang, H., & Zhang, J. (2007) · Journal of Power Sources · doi:10.1016/j.jpowsour.2007.03.044 · Cited by 873
Metadata
- Authors
- Samms, S. R., Wasmus, S., & Savinell, R. F.
- Venue
- Journal of The Electrochemical Society
- Publisher
- The Electrochemical Society
- Published
- 1996-04-01
- Volume
- 143
- Issue
- 4
- Pages
- 1225-1232
- ISSN
- 0013-4651 (ISSN-L)
- 1945-7111
- OpenAlex
- W2061554796
- Cited by
- 406
- References
- 0
- FWCI
- 3.40
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- iopscience.iop.org/page/copyright (vor, 8649 d)
- iopscience.iop.org/info/page/text-and-data-mining (tdm, 8649 d)
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- CoChat. (2026). Citation check: Thermal Stability of Proton Conducting Acid Doped Polybenzimidazole in Simulated Fuel Cell Environments. https://app.cochat.ai/papers/10.1149/1.1836621
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- Samms, S. R., Wasmus, S., & Savinell, R. F. (1996). Thermal Stability of Proton Conducting Acid Doped Polybenzimidazole in Simulated Fuel Cell Environments. Journal of The Electrochemical Society. https://doi.org/10.1149/1.1836621
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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