Abstract
5 to 20 mol% hybrid inorganic organic porous silica (SO3H-Si) and polymer polytetrafluoroethane (PTFE) was mixed together to produce 10 to 300 μm thick membrane (S03H-Si-PTFE). Proton conductivity of resultant hybrid silica before and after mixing with PTFE determined in dry nitrogen and 100 % relative humidity (RH) using impedance spectroscopy. 20 % S03H-Si-PTFE shows proton conductivity up to 10–2 S/cm, similar to Nafion117 at room temperature at 100 % relative humidity. Membrane electrode assembly (MEA) was developed and used in direct methanol fuel cell technology. Power density of the MEA was 55 mW/cm2 at 40 °C. Materials were characterized using various instrumental techniques, such as ICP, XRD, TG-DTA, XPS, N2 sorption, 29Si and 13C MAS NMR, FT-IR, particle size analyzer and TDS.
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Mal, N., Hinokuma, K. (2012). Proton Conducting Membrane from Hybrid Inorganic Organic Porous Materials for Direct Methanol Fuel Cell. In: Khemani, L., Srivastava, M., Srivastava, S. (eds) Chemistry of Phytopotentials: Health, Energy and Environmental Perspectives. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-23394-4_43
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DOI: https://doi.org/10.1007/978-3-642-23394-4_43
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