Multilayer Sulfonated Polyaromatic PEMFC Membranes | Zendy

Marrony M. | Zendy; Rozière J. | Zendy; Jones D. J. | Zendy; Lindheimer A. | Zendy

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Multilayer Sulfonated Polyaromatic PEMFC Membranes

Author(s) -

Marrony M.,

Rozière J.,

Jones D. J.,

Lindheimer A.

Publication year - 2005

Publication title -

fuel cells

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.485

H-Index - 69

eISSN - 1615-6854

pISSN - 1615-6846

DOI - 10.1002/fuce.200500227

Subject(s) - membrane , proton exchange membrane fuel cell , anode , chemical engineering , bilayer , cathode , diffusion , solvent , materials science , conductivity , fuel cells , hydrogen , proton transport , casting , chemistry , electrode , composite material , organic chemistry , thermodynamics , biochemistry , physics , engineering

Sulfonated polyetheretherketone (sPEEK) membranes have been developed in which a hierarchical organisation into multilayers has been favoured during preparation using solvent casting. Bilayer membranes comprising sPEEK of different degrees of sulfonation (having ion exchange capacities between 1.1 and 1.6 meq g –1 ) have been characterised for their water uptake properties and proton conductivity. The composite membranes show no tendency to delaminate, even under prolonged operation in a hydrogen – oxygen fuel cell. By associating sPEEK of different water uptake characteristics, water back diffusion in an operating fuel cell is favoured, leading to a degree of control over the direction of water production at the anode or the cathode. Such a bilayer membrane has been operated at 110 °C without reactant gas hydration for over 900 h.

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