Journal
JOURNAL OF MEMBRANE SCIENCE
Volume 437, Issue -, Pages 65-71Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.memsci.2013.02.035
Keywords
Proton exchange membrane; Sulfonated poly (ether ether ketone); Orientation; Inorganic-organic hybrid; Electric field
Categories
Funding
- Natural Science Foundation of Tianjin [11JCZDJC23800]
- Natural Science Foundation of China [2012BGH-0001]
- Program of Introducing Talents of Discipline to Universities [B06006]
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With the aim to improve the conductivity of proton exchange membranes (PEMs), an external AC electric field is applied to a sulfonated poly (ether ether ketone) (SPEEK)-titanium (IV) oxide (TiO2) hybrid casting solution during solvent evaporation. Present technique gives a potentially useful method to fabricate PEMs with oriented proton channels, and resulting in increased conductivity by 75% in the trans-plane direction versus normal methods. In addition, reciprocation of TiO2 under the AC electric field prevents the nanoparticles from aggregating and improves mechanical strength of the PEMs. Factors affect the proton channels' alignment degree such as the applied field magnitude and frequency are also investigated. (C) 2013 Elsevier B.V. All rights reserved.
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