Hybrid Membrane based on Polymer-doped Phosposilicate and their Characterization Hybrid Membrane based on Polymer-doped Phosposilicate and their Characterization

Hybrid Membrane based on Polymer-doped Phosposilicate and their Characterization

Uma Thanganathan1,2,*

1Forschungszentrum, GmbH, Institute of Energy and Climate Research, Julich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany

2Research Core for Interdisciplinary Sciences (RCIS), Okayama University, Tsushima-Naka, Kita-Ku, Okayama 700-8530, Japan

Adv. Mater. Lett., 2021, 12 (8), 21081652

DOI: 10.5185/amlett.2021.081652

Publication Date (Web): Jul 05, 2021

E-mail: ptuma2005@gmail.com

Abstract


A class of proton-conducting non-fluorinated hybrid composite membranes was produced based on poly(vinylpyrrolidone)-doped tetraethoxysilicate (TEOS) and triammoniumphosphate ((NH4)3PO4.3H2O) with and without phosphoricacid. The formation of hybrid composites was verified by various analyses, such as XRD and 1H NMR, and the thermal degradation was determined by thermogravimetric analysis. The proton conductivity was measured using impedance spectroscopy and values of 3.4 × 10‒2 S/cm and 2.3 × 10‒2 S/cm were obtained at room temperature for the SiO2/P2O5/(NH4)3PO4/PVP (90/8/2 mol%/1g) and the SiO2/(NH4)3PO4/PVP (90/10 mol%/1g) hybrid composite membranes, respectively. The results were discussed based on the effects of P2O5 and (NH4)3PO4 on the hybrid composites.

Keywords

Hybrid materials, composites, fabrication, membranes.

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