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Ultra‐thin, Free‐Standing Proton‐Conducting Membrane with Organic/Inorganic Sandwich Structure
Author(s) -
Li Haibin,
Yi Man,
Jiang Fengjing
Publication year - 2010
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200900723
Subject(s) - membrane , methanol , conductivity , permeation , polymer chemistry , proton , materials science , chemical engineering , permeability (electromagnetism) , flexibility (engineering) , mechanical strength , layer (electronics) , thin film , chemistry , composite material , nanotechnology , organic chemistry , biochemistry , physics , statistics , mathematics , quantum mechanics , engineering
An ultra‐thin, flexible, free‐standing, proton‐conducting membrane of (PEI/PCGF)/SiO 2 /(PEI/PCGF) with a sandwich structure has been prepared. Giant membranes with areas up to about 16 cm 2 and thicknesses of 600 nm have been obtained. The inorganic silica layer suppresses methanol permeation, while the two organic layers provide sufficient mechanical strength and flexibility. This membrane exhibits efficient proton conductivity and low methanol permeability.