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Sulfonated Poly(ether Ether Ketone)-based Composite Membrane for Polymer Electrolyte Membrane Fuel Cells by Palanichamy Krishnan; Jin-Soo Park; Tae-Hyun Yang; Won-Yong Lee; Chang-Soo Kim is a Engineering article available to read on EtoBox.

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The solid proton conductor zirconium phosphate sulfophenylenphosphonate of composition Zr(HPO 4 ) 0.65 (SPP) 1.35 where SPP denotes metasulfophenylenphosphonate was prepared in the amorphous gel form in dimethyl formamide (DMF) and characterized by 31 P NMR. The composite membranes of SPEEK up to 50 wt.% of zirconium phosphate sulfophenylenphosphonate content were prepared by introducing the solid proton conductor from the gel. The composite membranes were characterized using FT-IR, powder X-ray diffraction, SEM, DSC/TGA. The proton conductivity of the membranes was measured under 100% relative humidity up to 70 • C. The composite membranes had better thermal stability when compared with that of SPEEK. A three-fold increase in proton conductivity at 70 • C was observed for the composite membrane with 50 wt.% of solid proton conductor. Furthermore, the conductivity results imply that a critical percentage of proton conductor is needed to establish conduction pathways in the polymer matrix.

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Author

Palanichamy Krishnan; Jin-Soo Park; Tae-Hyun Yang; Won-Yong Lee; Chang-Soo Kim

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0378-7753)

Published

2006

Language

EN

Field

Engineering (Physical Sciences)