Hydrophilic side-chain polymer, electrolyte membranes

a side chain polymer and electrolyte technology, applied in the direction of non-aqueous electrolyte cells, cell components, electrochemical generators, etc., can solve the problems of reducing the efficiency of the fuel cell, depleting the chemical components of the electrode, and not having a molecular level understanding of electro-osmosis, so as to prevent or improve the increase of electro-osmotic drag and increase swelling
US20060035987A1Inactive Publication Date: 2006-02-16PADDISON STEPHEN
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
PADDISON STEPHEN
Publication Date
2006-02-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

Exemplary methods for the characterization of proton dissociation and transport for hydrophilic components of hydrated Polymer Electrolyte Membranes (PEM's) is described. Disclosed features and specifications may be variously implemented, controlled, adapted or otherwise optionally modified to improve differential hydrophilicity of the sidechain of any ionomeric PEM material. A representative embodiment of the present invention generally provides for the amelioration of electro-osmotic drag of water by protons, for example, in Direct Methanol Fuel Cells.
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Description

FIELD OF INVENTION

[0001] The present invention generally concerns fuel cell technology; and more particularly, in one representative and exemplary embodiment, the characterization of proton dissociation and transport for hydrophilic components of Polymer Electrolyte Membranes (PEM's). A PEM material comprising a novel differential sidechain chemical composition is also disclosed as inter alia preventing or otherwise ameliorating electro-osmotic drag as the membrane material experiences increased swelling upon permeation with, for example, aqueous methanol. BACKGROUND

[0002] Fuel cells are electrochemical cells in which a free energy change resulting from a fuel oxidation is converted into electrical energy. The earliest fuel cells were first constructed by William Grove in 1829 with later development efforts resuming in the late 1930's with the work of F. T. Bacon. In early experiments, hydrogen and oxygen gas were bubbled into compartments containing water that were connected by a...

Claims

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