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Electrochemical Performance Measurements of PBI-Based High-Temperature PEMFCs
Joint Authors
Venkateswara Rao, Chitturi
Rambabu, B.
Parrondo, Javier
Ghatty, Sundara L.
Source
International Journal of Electrochemistry
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2010-09-16
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
Acid-doped poly(2,2′-m-phenylene-5,5′-bibenzimidazole) membranes have been prepared and used to assemble membrane electrode assemblies (MEAs) with various contents of PBI (1–30 wt.%) in the gas diffusion electrode (GDE).
The MEAs were tested in the temperature range of 140∘C–200∘C showing that the PBI content in the electrocatalyst layer influences strongly the electrochemical performance of the fuel cell.
The MEAs were assembled using polyphosphoric acid doped PBI membranes having conductivities of 0.1 S cm−1 at 180∘C.
The ionic resistance of the cathode decreased from 0.29 to 0.14 Ohm-cm2 (180∘C) when the content of PBI is varied from 1 to 10 wt.%.
Similarly, the mass transfer resistance or Warburg impedance increased 2.5 times, reaching values of 6 Ohm-cm2.
5 wt.% PBI-based MEA showed the best performance.
The electrochemical impedance measurements were in good agreement with the fuel cell polarization curves obtained, and the optimum performance was obtained when overall resistance was minimal.
American Psychological Association (APA)
Parrondo, Javier& Venkateswara Rao, Chitturi& Ghatty, Sundara L.& Rambabu, B.. 2010. Electrochemical Performance Measurements of PBI-Based High-Temperature PEMFCs. International Journal of Electrochemistry،Vol. 2011, no. 2011, pp.1-8.
https://search.emarefa.net/detail/BIM-458325
Modern Language Association (MLA)
Parrondo, Javier…[et al.]. Electrochemical Performance Measurements of PBI-Based High-Temperature PEMFCs. International Journal of Electrochemistry No. 2011 (2011), pp.1-8.
https://search.emarefa.net/detail/BIM-458325
American Medical Association (AMA)
Parrondo, Javier& Venkateswara Rao, Chitturi& Ghatty, Sundara L.& Rambabu, B.. Electrochemical Performance Measurements of PBI-Based High-Temperature PEMFCs. International Journal of Electrochemistry. 2010. Vol. 2011, no. 2011, pp.1-8.
https://search.emarefa.net/detail/BIM-458325
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-458325