Journal ArticleDOI
Proton and Methanol Transport in Poly(perfluorosulfonate) Membranes Containing Cs + and H + Cations
TLDR
In this paper, perfluorosulfonate acid (PFOA) membranes were doped with cesium ions to several degrees, and they were investigated in relation to methanol permeability as well as hydrogen ion conductivity.Abstract:
Poly(perfluorosulfonate acid) membranes were doped with cesium ions to several degrees. These, along with the H{sup +}-form membrane, were investigated in relation to methanol permeability as well as hydrogen ion conductivity. While retaining considerable conductivity, the cesium-doped membranes are highly impermeable to methanol. The author found that methanol permeability in the membrane reduced by over one order of magnitude, owing to the presence of cesium ions. These findings are discussed on the basis of alterations produced by cesium in the membrane microstructure. Also discussed is the potential implication of these results in the direct methanol fuel cell technology.read more
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Journal ArticleDOI
A review of the state-of-the-art of the methanol crossover in direct methanol fuel cells
Angelika Heinzel,V.M. Barragán +1 more
TL;DR: In this article, the influence of methanol crossover in DMFCs and the effort to get a more methenol-impermeably polymer electrolyte found in the literature is discussed.
Journal ArticleDOI
Degradation of polymer electrolyte membranes
Amanda Collier,Haijiang Wang,Xiao-Zi Yuan,Jiujun Zhang,David P. Wilkinson,David P. Wilkinson +5 more
TL;DR: In this article, the degradation of polymer electrolyte membrane (PEM) fuel cells is classified into three categories: mechanical, thermal and chemical/electrochemical, along with detailed mechanisms for some degradations.
Journal ArticleDOI
Sulfonated poly(ether ether ketone) membranes for direct methanol fuel cell
TL;DR: Sulfonated poly(ether ether ketone) (SPEEK) membranes with various degrees of sulfonation (DS) were prepared and their proton conductivity and methanol permeability as a function of temperature were investigated.
Journal ArticleDOI
Polyelectrolyte Complexes of Chitosan and Poly(acrylic acid) As Proton Exchange Membranes for Fuel Cells
TL;DR: Ionically cross-linked polyelectrolyte complex (PEC) membranes of cationic chitosan (CS) and anionic poly(acrylic acid) (PAAc) were synthesized and assessed for applicability in fuel cells.
Journal ArticleDOI
Synthesis and characterization of sulfonated polyimide membranes for direct methanol fuel cell
TL;DR: In this article, the sulfonated polyimide (SPI) membranes for direct methanol fuel cell (DMFC) were synthesized with 3,3′,4,4′-benzophenonetetracarboxylic dianhydride (BTDA), 2,2′ -benzidinedisulfonic acid (BDSA), 4, 4′-oxydianiline (ODA) through classical two-step methods.
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