Novel-SiO2-Doped Proton Exchange Membrane for Self-Humidifying Fuel Cell

Cheng Wang; Nian Fang Wan; Zong Qiang Mao; Jing Ming Xu

doi:10.4028/www.scientific.net/KEM.336-338.537

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The Effect of Silicate Layers on Electrochemical Properties in Nanocomposite Solid Polymer Electrolytes
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Low Temperature Electrolyte for Li-Ion Batteries
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Poly(Acrylonitrile-Methyl Methacrylate) Based Microporous Gel Electrolyte for Li-Ion Battery
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Novel-SiO₂-Doped Proton Exchange Membrane for Self-Humidifying Fuel Cell
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Optical Property of Spark Plasma Sintered Translucent AlN Ceramics
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Modification of Optical Waveguide Material PMMA with Nano-Silicon by Sol-Gel Approach
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Synthesis and Second-Order Optical Nonlinearity of Inorganic-Organic Hybrid Films Bearing Y-Type NLO Active Chromophore
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Novel-SiO₂-Doped Proton Exchange Membrane for Self-Humidifying Fuel Cell

Abstract:

To retain the optimum hydration level of the proton exchange membrane fuel cell (PEMFC) without humidification sub-system, a novel self-humidifying composite membrane was fabricated by the technology of Si[OCH2CH3]4 in situ sol-gel reaction in a commercial Nafion 112 membrane. The physico-chemical properties of the membrane were studied by means of AFM, SEM and AC impedance. These results showed that the nano-SiO2 reactant was uniformly distributed in the composite membrane. It was found that the proton conductivity increased observably by dispersing 3 wt % nano-SiO2 in the composite membrane at low water content, and the SiO2/Nafion composite membrane improved the self-humidifying performance of PEMFC.