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Preparation and characterization of inorganic–organic hybrid proton exchange membranes based on phosphorylated PVA and PEG-grafted silica particles

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Abstract

We reported proton-conducting membranes with novel microstructure based on partially phosphorylated poly(vinyl alcohol) (P-PVA) and polyethylene glycol (PEG) grafted silica (PEG-SiO2) particles. The PEG-SiO2 particles were synthesized through acid catalyzed hydrolysis and condensation reactions. The membranes were characterized for their mechanical, structural, morphological, and electrical properties by employing tensile test, Fourier transform infrared (FTIR), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), impedance analyzer, respectively. In these membranes, P-PVA acts as the proton source and PEG act as the proton solvent. The PEG-riched phases in the hybrid membrane form continuous ionic conducting pathways and subsequently give high ionic conductivity. The results suggest that the obtained membrane shows good thermal stability, excellent mechanical property and high ionic conductivity, and the low-cost hybrid membrane can be a promising candidate for intermediate temperature fuel cell systems.

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Acknowledgments

The authors greatly appreciate Dr. Wu Xu at Ferro Corporation and Mr. Xin Wang at University of Western Ontario for valuable discussions and suggestions.

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Authors and Affiliations

  1. Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, No.16, Southion 2, The First Circle Road, Chengdu, 610041, China

    Zhigang Ma, Jiandong Gao, Yongjian Huai, Jing Guo, Zhenghua Deng & Jishuan Suo

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  1. Zhigang Ma
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  2. Jiandong Gao
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  3. Yongjian Huai
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  4. Jing Guo
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  5. Zhenghua Deng
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  6. Jishuan Suo
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Corresponding author

Correspondence to Zhenghua Deng.

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Ma, Z., Gao, J., Huai, Y. et al. Preparation and characterization of inorganic–organic hybrid proton exchange membranes based on phosphorylated PVA and PEG-grafted silica particles. J Sol-Gel Sci Technol 48, 267–271 (2008). https://doi.org/10.1007/s10971-008-1813-1

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  • DOI: https://doi.org/10.1007/s10971-008-1813-1

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