Celgard-silica composite membranes with enhanced wettability and tailored pore sizes prepared by supercritical carbon dioxide assisted impregnation with silanes
作者： V.V. Zefirov , V.E. Sizov , M.S. Kondratenko , I.V. Elmanovich , S.S. Abramchuk
DOI: 10.1016/J.SUPFLU.2019.04.015
关键词:
摘要: Abstract In this work, a novel method of producing polyolefin-silica composite membrane with enhanced wettability and tailored pore sizes was presented. The supercritical CO2 used as the medium for intercalation silica precursor into polymer matrix, which allowed obtaining uniform distribution SiO2 nanoparticles in material structure. proposed impregnating Celgard matrix tetraethoxysilane (TEOS) carbon dioxide following acid-catalyzed hydrolysis condensation leads to significant changes ion transport properties membranes aqueous electrolytes. This allows one obtain separators suitable electrochemical energy storage systems such vanadium redox flow batteries.
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