6533b827fe1ef96bd12864da

RESEARCH PRODUCT

Covalent-ionically cross-linked polyetheretherketone proton exchange membrane for direct methanol fuel cell

Hongze LuoGuntars VaivarsMkhulu Mathe

subject

Renewable Energy Sustainability and the EnvironmentInorganic chemistryEnergy Engineering and Power TechnologyProton exchange membrane fuel cellConductivitychemistry.chemical_compoundDirect methanol fuel cellMembranechemistryCovalent bondPermeability (electromagnetism)NafionMethanolElectrical and Electronic EngineeringPhysical and Theoretical ChemistryNuclear chemistry

description

Abstract In this paper, the proton exchange membrane prepared by covalent-ionically cross-linking water soluble sulfonated–sulfinated poly(oxa- p -phenylene-3,3-phthalido- p -phenylene-oxa- p -phenylene-oxy-phenylene) (SsPEEK-WC) is reported. Compared with covalent cross-linked PEEK-WC membrane, this covalent-ionically cross-linked PEEK-WC membrane exhibits extremely reduced water uptake and methanol permeability, but just slightly sacrificed proton conductivity. The proton conductivity of the covalent-ionically cross-linked PEEK-WC membrane reaches to 2.1 × 10 −2  S cm −1 at room temperature and 4.1 × 10 −2  S cm −1 at 80 °C. The methanol permeability is 1.3 × 10 −7  cm 2  s −1 , 10 times lower than that of Nafion ® 117 membrane. The results suggest that the covalent-ionically cross-linked PEEK-WC membrane is a promising candidate for direct methanol fuel cell because of low methanol permeability and adequate proton conductivity.

yearjournalcountryeditionlanguage
2010-08-01Journal of Power Sources
https://doi.org/10.1016/j.jpowsour.2010.03.023