a composite membrane of caesium salt of heteropolyacids/quaternary diazabicyclo-octane polysulfone with poly (tetrafluoroethylene) for intermediate temperature fuel cells

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ID: 231148
2012
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Abstract
Inorganic-organic composite electrolyte membranes were fabricated from Cs<sub>X</sub>H<sub>3−X</sub>PMo<sub>12</sub>O<sub>40</sub> (CsPOMo) and quaternary diazabicyclo-octane polysulfone (QDPSU) using a polytetrafluoroethylene (PTFE) porous matrix for the application of intermediate temperature fuel cells. The CsPOMo/QDPSU/PTFE composite membrane was made proton conducting by using a relatively low phosphoric acid loading, which benefits the stability of the membrane conductivity and the mechanical strength. The casting method was used in order to build a thin and robust composite membrane. The resulting composite membrane films were characterised in terms of the elemental composition, membrane structure and morphology by EDX, FTIR and SEM. The proton conductivity of the membrane was 0.04 S cm<sup>−1</sup> with a H<sub>3</sub>PO<sub>4</sub> loading level of 1.8 PRU (amount of H<sub>3</sub>PO<sub>4</sub> per repeat unit of polymer QDPSU). The fuel cell performance with the membrane gave a peak power density of 240 mW cm<sup>−2</sup> at 150 °C and atmospheric pressure.
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scott2012membranesa Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Keith Scott;Xu Wu;Yuancheng Cao;Xu Wang;Chenxi Xu
Journal advances in pharmacological sciences
Year 2012
DOI
10.3390/membranes2030384
URL
http://www.mdpi.com/2077-0375/2/3/384
Keywords
composite membrane polysulfonechemical technologychemical engineering

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