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Amino-functionalized mesoporous silica based polyethersulfone-polyvinylpyrrolidone composite membrane for elevated temperature fuel cells

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Authors
Zhang, Jin
Lu, Shanfu
Zhu, H.
Chen, K.
Liu, J.
Xiang, Y.
Forsyth, M.
Jianga, S.
Date
2016
Type
Conference Paper

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Zhang, J. and Lu, S. and Zhu, H. and Chen, K. and Liu, J. and Xiang, Y. and Forsyth, M. et al. 2016. Amino-functionalized mesoporous silica based polyethersulfone-polyvinylpyrrolidone composite membrane for elevated temperature fuel cells, pp. 581-588.
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ECS Transactions
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Department of Civil Engineering
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Abstract

© 2016 The Electrochemical Society. Inorganic-organic nanostructured hybrid membranes based on polyethersulfone (PES)-polyvinylpyrrolidone (PVP) were prepared with mesoporous silica materials. All the hybrid membranes showed the similar phosphoric acid (PA) uptake. However, the proton conductivity of the PA-PES-PVP membrane was significantly increased after the addition of the inorganic fillers, especially for the amino-functionalized hollow mesoporous silica (NH2-HMS). The cell performance test also confirmed the superiority of the PES-PVP membranes with the inorganic fillers. The highest peak power density at 180 oC reached up to 480 mW cm-2 for the NH2-HMS based composite membrane fuel cell, which is 92.7 % higher than that of the PA-PES-PVP membrane fuel cell at the identical condition. The outstanding performance of the inorganic-organic hybrid membranes might be due to the facilitated proton transportation in the ordered mesoporous channels, and the great water retention of the inorganic fillers.