Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7717477 | International Journal of Hydrogen Energy | 2015 | 11 Pages |
Abstract
Alkaline anion-exchange membranes (AAEMs) for solid alkaline fuel cells (SAFC) application were successfully prepared by radiation induced grafting of Vinyl benzyl chloride onto ultra-high molecular weight polyethylene powder (UHMWPE), followed by film fabrication by melt pressing and quaternization with a Guanidine derivative, 1,1,3,3-tetramethyl-2-n-butylguanidine (TMBG). The chemical structures of the resulting AAEMs were examined by Fourier transform infrared, which showed that the grafted membranes were successfully functionalized by modified guanidine. The performance of the AEMs, including ion exchange capacity, water uptake, in-plane swelling, methanol uptake, methanol permeability, and hydroxide ion conductivity were investigated. Thermal analysis showed that the Guanidine-based AAEMs comprises better thermal stability. The AAEMs membrane exhibited a maximum ionic conductivity of 27.7 mS cmâ1 at 90 °C. Methanol permeability is found to be in the order of 10â9 cm2 sâ1, which is significantly lower than that of Nafion®. The membranes have useful properties as an anion exchange membranes suitable for alkaline fuel cells.
Related Topics
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Authors
Tauqir A. Sherazi, Saqib Zahoor, Rizwan Raza, Ahson Jabbar Shaikh, Syed Ali Raza Naqvi, Ghazanfar Abbas, Yaqoob Khan, Shenghai Li,