Metadata of CSIR Papers
View Archive Info| Field | Value | |
| Creator |
Selvaganesh, SV
Selvarani, G Sridhar, P Pitchumani, S Shukla, AK |
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| Subject |
Electrochemistry; Materials Science
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| Description |
Durability is central to the commercialization of polymer electrolyte fuel cells (PEFCs). The incorporation of TiO(2) with platinum (Pt) ameliorates both the stability and catalytic activity of cathodes in relation to pristine Pt cathodes currently being used in PEFCs. PEFC cathodes comprising carbon-supported Pt-TiO(2) (Pt-TiO(2)/C) exhibit higher durability in relation to Pt/C cathodes as evidenced by cell polarization, impedance, and cyclic voltammetry data. The degradation in performance of the Pt-TiO(2)/C cathodes is 10% after 5000 test cycles as against 28% for Pt/C cathodes. These data are in conformity with the electrochemical surface area and impedance values. Pt-TiO(2)/C cathodes can withstand even 10,000 test cycles with nominal effect on their performance. X-ray diffraction, transmission electron microscope, and cross-sectional field-emission-scanning electron microscope studies on the catalytic electrodes reflect that incorporating TiO(2) with Pt helps in mitigating the aggregation of Pt particles and protects the Nafion membrane against peroxide radicals formed during the cathodic reduction of oxygen. (C) 2010 The Electrochemical Society. [DOI: 10.1149/1.3421970] All rights reserved.
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| Publisher |
ELECTROCHEMICAL SOC INCPENNINGTON65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA
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| Date |
2011-09-20T11:59:55Z
2011-09-20T11:59:55Z 2010 |
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| Type |
Article
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| Identifier |
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
0013-4651 http://hdl.handle.net/123456789/11389 |
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| Language |
English
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