Fuel cell, polymer electrolyte and ion-exchange resin for the same
AssigneeHitachi, Ltd.
InventorMakoto Morishima
Life of this patent
Estimating the term…
Abstract
A fuel cell includes an electrode assembly, current collectors, and electroconductive separators. The electrode assembly includes an anode, a cathode, and a polymer electrolyte membrane arranged between the anode and cathode. The current collectors are arranged adjacent to the anode and cathode, respectively. The electroconductive separates are arranged outside the current collectors and have passages for feeding gases to the anode and cathode. The polymer electrolyte membrane includes an aromatic polymer having a sulfoalkylfluorene unit in its principal chain. An ion-exchange resin is used for the solid polymer electrolyte. An electrolyte membrane uses the ion exchange resin. A membrane/electrode assembly is used for the fuel cell.
Claims14
A fuel cell comprising a membrane/electrode assembly with an anode, a cathode, and a polymer electrolyte membrane arranged between the anode and the cathode,
- wherein the polymer electrolyte membrane includes an aromatic polymer having at least one of fluorene group and carbazole group in its principal chain, the fluorene group and carbazole group each having at least one sulfoalkyl group.
An ion-exchange resin comprising an electrolyte copolymer, the copolymer containing at least one of units represented by following Formulae (I), (II), and (III):
- wherein each of R1, R2, R3, R4, and R5 is independently a group selected from the group consisting of alkyl groups having one to six carbon atoms.
Dependencies are inferred from the claim text.