Evaluation of new ion exchange membranes for direct borohydride fuel cells

Several radiation grafted ion exchange membranes were prepared and evaluated in half-cells and direct borohydride fuel cells (DBFC) using voltammetric and steady-state polarisation techniques. The peak power density of 112 mW cm −2 was achieved in a DBFC with an ETFE-g-PSSA membrane using a solution...

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Bibliographic Details
Published in:Journal of membrane science 2007-02, Vol.288 (1), p.168-174
Main Authors: Cheng, H., Scott, K., Lovell, K.V., Horsfall, J.A., Waring, S.C.
Format: Article
Language:English
Subjects:
Direct borohydride fuel cell
Graft copolymers
Radiation grafted ion exchange membranes
Radiation grafting
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Summary:Several radiation grafted ion exchange membranes were prepared and evaluated in half-cells and direct borohydride fuel cells (DBFC) using voltammetric and steady-state polarisation techniques. The peak power density of 112 mW cm −2 was achieved in a DBFC with an ETFE-g-PSSA membrane using a solution of 1.32 M sodium borohydride and 2.5 M sodium hydroxide, 1 bar oxygen at 85 °C. The chemical and mechanical stabilities of the membranes were tested under various conditions. The membrane performance was compared to that obtained with the benchmark Nafion ® 117 membrane. The results are discussed based on the electrical, chemical, structural and mechanical properties of the membranes.
ISSN:0376-7388
1873-3123
DOI:10.1016/j.memsci.2006.11.014