Electrochemical Performance Measurements of PBI-Based High-Temperature PEMFCs

<table>Polarization curves for 5 wt.% PBI MEAs at atmospheric pressure and using dry gases. <svg height="15.25" id="M54" style="vertical-align:-3.27605pt" version="1.1" viewbox="0 0 19.475 15.25" width="19.475" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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<g transform="matrix(.012,-0,0,-.012,13.087,15.187)"><path d="M412 140l28 -9q0 -2 -35 -131h-373v23q112 112 161 170q59 70 92 127t33 115q0 63 -31 98t-86 35q-75 0 -137 -93l-22 20l57 81q55 59 135 59q69 0 118.5 -46.5t49.5 -122.5q0 -62 -29.5 -114t-102.5 -130l-141 -149h186q42 0 58.5 10.5t38.5 56.5z" id="x32"></path></g>
</svg> stoichiometric ratio: 1.2; O<sub>2</sub> stoichiometric ratio: 2; minimum flow: 0.2 L min<sup>-1</sup>; Pt loading (anode and cathode): 0.4 mg <svg height="16.049999" id="M55" style="vertical-align:-0.16379pt" version="1.1" viewbox="0 0 34.549999 16.049999" width="34.549999" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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t-52 18.5v23q79 14 139 41v-81q3 2 29 20.5t44 29.5q45 28 81 28t66 -22t46 -61q25 20 83 57q39 26 76 26q59 0 93 -40t34 -113v-193q0 -49 10.5 -60.5t54.5 -16.5v-26z" id="x6D"></path></g>
<g transform="matrix(.012,-0,0,-.012,21.175,7.613)"><path d="M535 230h-483v50h483v-50z" id="x2212"></path></g><g transform="matrix(.012,-0,0,-.012,28.16,7.613)"><path d="M412 140l28 -9q0 -2 -35 -131h-373v23q112 112 161 170q59 70 92 127t33 115q0 63 -31 98t-86 35q-75 0 -137 -93l-22 20l57 81q55 59 135 59q69 0 118.5 -46.5t49.5 -122.5q0 -62 -29.5 -114t-102.5 -130l-141 -149h186q42 0 58.5 10.5t38.5 56.5z" id="x32"></path></g>
</svg>.</table>

International Journal of Electrochemistry

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Figure 3

Figure 3: Electrochemical Performance Measurements of PBI-Based High-Temperature PEMFCs 