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Title: Acid-base hybrid polymer electrolyte membranes based on SPEEK
Authors: Xue, Y.
Fu, R. 
Wu, C.
Lee, J.Y. 
Xu, T.
Keywords: Acid-base polymer blend
Direct methanol fuel cells
Organic-inorganic hybrid
Poly(ether ether ketone)
Proton-conducting membranes
Issue Date: 15-Mar-2010
Citation: Xue, Y., Fu, R., Wu, C., Lee, J.Y., Xu, T. (2010-03-15). Acid-base hybrid polymer electrolyte membranes based on SPEEK. Journal of Membrane Science 350 (1-2) : 148-153. ScholarBank@NUS Repository.
Abstract: A new series of proton-conducting membranes has been developed that consists of sulfonated poly(ether ether ketone) (SPEEK) and 3-aminopropyltriethoxy silane (APTES) prepared over a wide range of compositions. The APTES was added to SPEEK to address its deficiencies, such as high dimensional swelling and water uptake in SPEEK membranes at elevated temperatures. A dispersed phase of amino silica was formed through hydrolysis and condensation of APTES. The silica contributes to the suppression of permeation of reactants across the membrane and the electrostatic interaction between the basic amine groups of APTES and the acidic sulfonic groups of SPEEK suppresses loss of silica from the membrane. The hybrid SPEEK and APTES membranes are stable up to about 80 °C and demonstrate a higher ratio of proton conductivity to methanol permeability than that of Nafion® 117. © 2009 Elsevier B.V. All rights reserved.
Source Title: Journal of Membrane Science
ISSN: 03767388
DOI: 10.1016/j.memsci.2009.12.022
Appears in Collections:Staff Publications

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