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Fumed Silica Nanoparticles Incorporated in Quaternized Poly(Vinyl Alcohol) Nanocomposite Membrane for Enhanced Power Densities in Direct Alcohol Alkaline Fuel Cells

Author

Listed:
  • Selvaraj Rajesh Kumar

    (Department of Chemical and Materials Engineering, Chang Gung University, Kwei-shan, Taoyuan 333, Taiwan)

  • Cheng-Hsin Juan

    (Department of Chemical and Materials Engineering, Chang Gung University, Kwei-shan, Taoyuan 333, Taiwan)

  • Guan-Ming Liao

    (Department of Chemical and Materials Engineering, Chang Gung University, Kwei-shan, Taoyuan 333, Taiwan)

  • Jia-Shiun Lin

    (Department of Chemical and Materials Engineering, Chang Gung University, Kwei-shan, Taoyuan 333, Taiwan)

  • Chun-Chen Yang

    (Department of Chemical Engineering, Mingchi University of Technology, Tai-shan, New Taipei City 243, Taiwan)

  • Wei-Ting Ma

    (Department of Chemical and Materials Engineering, Chang Gung University, Kwei-shan, Taoyuan 333, Taiwan)

  • Jiann-Hua You

    (Department of Chemical and Materials Engineering, Chang Gung University, Kwei-shan, Taoyuan 333, Taiwan)

  • Shingjiang Jessie Lue

    (Department of Chemical and Materials Engineering, Chang Gung University, Kwei-shan, Taoyuan 333, Taiwan)

Abstract

A nanocomposite polymer membrane based on quaternized poly(vinyl alcohol)/fumed silica (QPVA/FS) was prepared via a quaternization process and solution casting method. The physico-chemical properties of the QPVA/FS membrane were investigated. Its high ionic conductivity was found to depend greatly on the concentration of fumed silica in the QPVA matrix. A maximum conductivity of 3.50 × 10 −2 S/cm was obtained for QPVA/5%FS at 60 °C when it was doped with 6 M KOH. The permeabilities of methanol and ethanol were reduced with increasing fumed silica content. Cell voltage and peak power density were analyzed as functions of fumed silica concentration, temperature, methanol and ethanol concentrations. A maximum power density of 96.8 mW/cm 2 was achieved with QPVA/5%FS electrolyte using 2 M methanol + 6 M KOH as fuel at 80 °C. A peak power density of 79 mW/cm 2 was obtained using the QPVA/5%FS electrolyte with 3 M ethanol + 5 M KOH as fuel. The resulting peak power densities are higher than the majority of published reports. The results confirm that QPVA/FS exhibits promise as a future polymeric electrolyte for use in direct alkaline alcoholic fuel cells.

Suggested Citation

  • Selvaraj Rajesh Kumar & Cheng-Hsin Juan & Guan-Ming Liao & Jia-Shiun Lin & Chun-Chen Yang & Wei-Ting Ma & Jiann-Hua You & Shingjiang Jessie Lue, 2015. "Fumed Silica Nanoparticles Incorporated in Quaternized Poly(Vinyl Alcohol) Nanocomposite Membrane for Enhanced Power Densities in Direct Alcohol Alkaline Fuel Cells," Energies, MDPI, vol. 9(1), pages 1-19, December.
    • Handle: RePEc:gam:jeners:v:9:y:2015:i:1:p:15-:d:61353
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    References listed on IDEAS

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    1. An, L. & Zhao, T.S. & Li, Y.S., 2015. "Carbon-neutral sustainable energy technology: Direct ethanol fuel cells," Renewable and Sustainable Energy Reviews, Elsevier, vol. 50(C), pages 1462-1468.
    2. Eileen Hao Yu & Ulrike Krewer & Keith Scott, 2010. "Principles and Materials Aspects of Direct Alkaline Alcohol Fuel Cells," Energies, MDPI, vol. 3(8), pages 1-30, August.
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    Cited by:

    1. Jia-Shuin Lin & Wei-Ting Ma & Chao-Ming Shih & Bor-Chern Yu & Li-Wei Teng & Yi-Chun Wang & Kong-Wei Cheng & Fang-Chyou Chiu & Shingjiang Jessie Lue, 2016. "Reorientation of Magnetic Graphene Oxide Nanosheets in Crosslinked Quaternized Polyvinyl Alcohol as Effective Solid Electrolyte," Energies, MDPI, vol. 9(12), pages 1-13, November.

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