Performance comparison of long and short-side chain perfluorosulfonic membranes for high temperature polymer electrolyte membrane fuel cell operation |
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Authors: | A. StassiI. Gatto E. PassalacquaV. Antonucci A.S. Arico L. MerloC. Oldani E. Pagano |
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Affiliation: | a CNR-ITAE, Via Salita S. Lucia sopra Contesse 5, 98126 Messina, Italy b Solvay Solexis, viale Lombardia, 20 20021 Bollate (MI) Italy |
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Abstract: | A new Aquivion™ E79-03S short-side chain perfluorosulfonic membrane with a thickness of 30 μm (dry form) and an equivalent weight (EW) of 790 g/equiv recently developed by Solvay-Solexis for high-temperature operation was tested in a pressurised (3 bar abs.) polymer electrolyte membrane (PEM) single cell at a temperature of 130 °C. For comparison, a standard Nafion™ membrane (EW 1100 g/equiv) of similar thickness (50 μm) was investigated under similar operating conditions. Both membranes were tested for high temperature operation in conjunction with an in-house prepared carbon supported Pt electrocatalyst. The electrocatalyst consisted of nanosized Pt particles (particle size ∼2 nm) dispersed on a high surface area carbon black. The electrochemical tests showed better performance for the Aquivion™ membrane as compared to Nafion™ with promising properties for high temperature PEM fuel cell applications. Beside the higher open circuit voltage and lower ohmic constraints, a higher electrocatalytic activity was observed at high temperature for the electrocatalyst-Aquivion™ ionomer interface indicating a better catalyst utilization. |
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Keywords: | Aquivion&trade Short-side chain Polymer electrolyte membrane High temperature PEM fuel cell Automotive applications |
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