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Mesoporous Silica Nanospheres Impregnated with 12-Phosphotungstic Acid as Inorganic Filler of Nafion Membrane for Proton Exchange Membrane Fuel Cells

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In this work, a novel nanocomposite material, hollow mesoporous silica nanosphere impregnated with 12-phosphotungstic acid, briefed as HMSN-I, was synthesized by a vacuum-assisted impregnation method. The HMSN-I was used as an inorganic filler to synthesize Nafion-based composite membranes for the high temperature and low humidity operation of proton exchange membrane fuel cells (PEMFCs). The Nafion/HMSN-I composite membrane showed much higher conductivity than the pristine Nafion membrane under the identical conditions. The cell with the Nafion/HMSN-I composite membrane demonstrated significantly enhanced cell performance and stability in high temperature and low humidity environment. The mechanism can be ascribed to the enhanced proton conductivity and water retention ability of the composite membrane, which is very promising for the development of high temperature and low humidity PEMFCs.
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Keywords: 12-Phosphotungstic Acid; Fuel Cell; Hollow Mesoporous Silica Nanosphere; Nafion; Proton Exchange Membrane

Document Type: Research Article

Affiliations: School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, P. R. China

Publication date: January 1, 2019

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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