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Reorientation of Magnetic Graphene Oxide Nanosheets in Crosslinked Quaternized Polyvinyl Alcohol as Effective Solid Electrolyte

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  • Jia-Shuin Lin

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

  • Wei-Ting Ma

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

  • Chao-Ming Shih

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

  • Bor-Chern Yu

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

  • Li-Wei Teng

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

  • Yi-Chun Wang

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

  • Kong-Wei Cheng

    (Department of Chemical and Materials Engineering, and Green Technology Research Center, Chang Gung University, Kwei-shan, Taoyuan 333, Taiwan
    Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, Keelung Branch, Taoyuan 333, Taiwan)

  • Fang-Chyou Chiu

    (Department of Chemical and Materials Engineering, and Green Technology Research Center, Chang Gung University, Kwei-shan, Taoyuan 333, Taiwan
    Department of General Dentistry, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan)

  • Shingjiang Jessie Lue

    (Department of Chemical and Materials Engineering, and Green Technology Research Center, Chang Gung University, Kwei-shan, Taoyuan 333, Taiwan
    Department of Radiation Oncology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
    Department of Safety, Health and Environmental Engineering, Ming-Chi University of Technology, New Taipei City 243, Taiwan)

Abstract

This work aims to clarify the effect of magnetic graphene oxide (GO) reorientation in a polymer matrix on the ionic conduction and methanol barrier properties of nanocomposite membrane electrolytes. Magnetic iron oxide (Fe 3 O 4 ) nanoparticles were prepared and dispersed on GO nanosheets (GO-Fe 3 O 4 ). The magnetic GO-Fe 3 O 4 was imbedded into a quaternized polyvinyl alcohol (QPVA) matrix and crosslinked (CL-) with glutaraldehyde (GA) to obtain a polymeric nanocomposite. A magnetic field was applied in the through-plane direction during the drying and film formation steps. The CL-QPVA/GO-Fe 3 O 4 nanocomposite membranes were doped with an alkali to obtain hydroxide-conducting electrolytes for direct methanol alkaline fuel cell (DMAFC) applications. The magnetic field-reoriented CL-QPVA/GO-Fe 3 O 4 electrolyte demonstrated higher conductivity and lower methanol permeability than the unoriented CL-QPVA/GO-Fe 3 O 4 membrane or the CL-QPVA film. The reoriented CL-QPVA/GO-Fe 3 O 4 nanocomposite was used as the electrolyte in a DMAFC and resulted in a maximum power density of 55.4 mW·cm −2 at 60 °C, which is 73.7% higher than that of the composite without the magnetic field treatment (31.9 mW·cm −2 ). In contrast, the DMAFC using the CL-QPVA electrolyte generated only 22.4 mW·cm −2 . This research proved the surprising benefits of magnetic-field-assisted orientation of GO-Fe 3 O 4 in facilitating the ion conduction of a polymeric electrolyte.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jeners:v:9:y:2016:i:12:p:1003-:d:83985
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    References listed on IDEAS

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    1. 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.
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    Cited by:

    1. Selvaraj Rajesh Kumar & Wei-Ting Ma & Hsin-Chun Lu & Li-Wei Teng & Hung-Chun Hsu & Chao-Ming Shih & Chun-Chen Yang & Shingjiang Jessie Lue, 2017. "Surfactant-Assisted Perovskite Nanofillers Incorporated in Quaternized Poly (Vinyl Alcohol) Composite Membrane as an Effective Hydroxide-Conducting Electrolyte," Energies, MDPI, vol. 10(5), pages 1-22, May.
    2. Yu, Bor-Chern & Wang, Yi-Chun & Lu, Hsin-Chun & Lin, Hsiu-Li & Shih, Chao-Ming & Kumar, S. Rajesh & Lue, Shingjiang Jessie, 2017. "Hydroxide-ion selective electrolytes based on a polybenzimidazole/graphene oxide composite membrane," Energy, Elsevier, vol. 134(C), pages 802-812.
    3. Shingjiang Jessie Lue & Nai-Yuan Liu & Selvaraj Rajesh Kumar & Kevin Chi-Yang Tseng & Bo-Yan Wang & Chieh-Hsin Leung, 2017. "Experimental and One-Dimensional Mathematical Modeling of Different Operating Parameters in Direct Formic Acid Fuel Cells," Energies, MDPI, vol. 10(12), pages 1-14, November.

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