PEDOT–PSSA as an alternative support for Pt electrodes in PEFCs
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
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Title |
PEDOT–PSSA as an alternative support for Pt electrodes in PEFCs
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Creator |
Tintula, K.K.
Pitchumani, S. Sridhar, P. Shukla, A.K. |
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Subject |
Fuel Cells
Corrosion Science and Engineering Electrochemical Power Sources |
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Description |
Poly (3,4-ethylenedioxythiophene) (PEDOT) and poly (styrene sulphonic acid) (PSSA) supported
platinum (Pt) electrodes for application in polymer electrolyte fuel cells (PEFCs) are reported. PEDOT–PSSA
support helps Pt particles to be uniformly distributed on to the electrodes, and facilitates mixed electronic and
ionic (H+-ion) conduction within the catalyst, ameliorating Pt utilization. The inherent proton conductivity of
PEDOT–PSSA composite also helps reducing Nafion content in PEFC electrodes. During prolonged operation
of PEFCs, Pt electrodes supported onto PEDOT–PSSA composite exhibit lower corrosion in relation to Pt
electrodes supported onto commercially available Vulcan XC-72R carbon. Physical properties of PEDOT–
PSSA composite have been characterized by X-ray diffraction, Fourier transform infrared spectroscopy,
scanning electron microscopy and transmission electron microscopy. PEFCs with PEDOT–PSSA-supported Pt
catalyst electrodes offer a peak power-density of 810 mW cm–2 at a load current-density of 1800 mA cm–2 with
Nafion content as low as 5 wt.% in the catalyst layer. Accordingly, the present study provides a novel alternative
support for platinized PEFC electrodes.
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Publisher |
Indian Academy of Sciences.
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Date |
2010
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Type |
Article
PeerReviewed |
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Format |
application/pdf
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Identifier |
http://cecri.csircentral.net/177/1/2010-015.pdf
Tintula, K.K. and Pitchumani, S. and Sridhar, P. and Shukla, A.K. (2010) PEDOT–PSSA as an alternative support for Pt electrodes in PEFCs. Bulletin of Materials Science, 33 (2). pp. 157-163. ISSN 0250-4707 |
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Relation |
http://cecri.csircentral.net/177/
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