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Poly (vinyl alcohol) and poly (benzimidazole) blend membranes for high performance alkaline direct ethanol fuel cells

Author

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  • Herranz, D.
  • Escudero-Cid, R.
  • Montiel, M.
  • Palacio, C.
  • Fatás, E.
  • Ocón, P.

Abstract

A series of poly(vinyl alcohol)-blend-poly(benzimidazole) (PVA:PBI) membranes are synthesized with different ratios of PVA and PBI (2:1, 4:1, 6:1 and 8:1) using the casting method. These materials are doped in KOH 6 M solution in order to study their suitability for fuel cell applications. The Infra-red (IR) and Raman spectra confirm the successful doping of the membranes and the dimensional changes due to water and KOH uptakes during the doping are similar to other PBI-based membranes. XPS measurements are performed to evaluate the characteristics of these materials after the doping process. The thermal stability of the membranes is excellent in the range of desired temperatures (below 100 °C) and the conductivity values found are between 10−2 and 10−1 S cm−1. These results are optimal to consider these membranes as candidates for anion exchange membranes (AEMs) and they are tested in a single cell with ethanol as fuel. The PVA:PBI 4:1 membrane have the best behaviour in fuel cell, reaching a power density of 76 mW cm−2, approximately 50% better than the doped PBI in the same conditions. These important results can be considered highly promising for the future application of these membranes in alkaline polymer electrolyte membrane fuel cells (APEMFC).

Suggested Citation

  • Herranz, D. & Escudero-Cid, R. & Montiel, M. & Palacio, C. & Fatás, E. & Ocón, P., 2018. "Poly (vinyl alcohol) and poly (benzimidazole) blend membranes for high performance alkaline direct ethanol fuel cells," Renewable Energy, Elsevier, vol. 127(C), pages 883-895.
  • Handle: RePEc:eee:renene:v:127:y:2018:i:c:p:883-895
    DOI: 10.1016/j.renene.2018.05.020
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    References listed on IDEAS

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    1. Benipal, Neeva & Qi, Ji & Gentile, Jacob C. & Li, Wenzhen, 2017. "Direct glycerol fuel cell with polytetrafluoroethylene (PTFE) thin film separator," Renewable Energy, Elsevier, vol. 105(C), pages 647-655.
    2. Deng, Hao & Wang, Dawei & Xie, Xu & Zhou, Yibo & Yin, Yan & Du, Qing & Jiao, Kui, 2016. "Modeling of hydrogen alkaline membrane fuel cell with interfacial effect and water management optimization," Renewable Energy, Elsevier, vol. 91(C), pages 166-177.
    3. Watt, G.D., 2014. "A new future for carbohydrate fuel cells," Renewable Energy, Elsevier, vol. 72(C), pages 99-104.
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    1. Zhengping Zhou & Oksana Zholobko & Xiang-Fa Wu & Ted Aulich & Jivan Thakare & John Hurley, 2020. "Polybenzimidazole-Based Polymer Electrolyte Membranes for High-Temperature Fuel Cells: Current Status and Prospects," Energies, MDPI, vol. 14(1), pages 1-27, December.
    2. Coppola, R.E. & Herranz, D. & Escudero-Cid, R. & Ming, N. & D’Accorso, N.B. & Ocón, P. & Abuin, G.C., 2020. "Polybenzimidazole-crosslinked-poly(vinyl benzyl chloride) as anion exchange membrane for alkaline electrolyzers," Renewable Energy, Elsevier, vol. 157(C), pages 71-82.
    3. Altaf, Faizah & Batool, Rida & Gill, Rohama & Rehman, Zohaib Ur & Majeed, Hammad & Ahmad, Adnan & Shafiq, Muhammad & Dastan, Davoud & Abbas, Ghazanfar & Jacob, Karl, 2021. "Synthesis and electrochemical investigations of ABPBI grafted montmorillonite based polymer electrolyte membranes for PEMFC applications," Renewable Energy, Elsevier, vol. 164(C), pages 709-728.
    4. Ingabire, Providence Buregeya & Pan, Xueting & Haragirimana, Alphonse & Li, Na & Hu, Zhaoxia & Chen, Shouwen, 2020. "Improved hydroxide conductivity and performance of nanocomposite membrane derived on quaternized polymers incorporated by titanium dioxide modified graphitic carbon nitride for fuel cells," Renewable Energy, Elsevier, vol. 152(C), pages 590-600.

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