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Polyimide, polyimide polymer electrolyte membrane, membrane-electrode assembly, and solid polymer fuel cell

A technology of polyimide and electrolyte membrane, applied in the direction of solid electrolyte fuel cells, fuel cells, fuel cell components, etc., can solve the problem that the methanol permeation resistance is not necessarily good, and the methanol permeation resistance of the electrolyte membrane is not considered And other issues

Inactive Publication Date: 2013-12-18
NITTO DENKO CORP
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  • Application Information

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Problems solved by technology

However, in the technology of Japanese Patent Laid-Open No. 2003-68326, the methanol permeation resistance of the electrolyte membrane is not considered, and the methanol permeation resistance of the electrolyte membrane disclosed in the publication is not necessarily excellent.

Method used

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  • Polyimide, polyimide polymer electrolyte membrane, membrane-electrode assembly, and solid polymer fuel cell
  • Polyimide, polyimide polymer electrolyte membrane, membrane-electrode assembly, and solid polymer fuel cell
  • Polyimide, polyimide polymer electrolyte membrane, membrane-electrode assembly, and solid polymer fuel cell

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Embodiment 1）

[0129] 0.438 g of BAPF thus obtained, 3.04 g of 4,4'-bis(4-aminophenoxy)biphenyl-3,3'-disulfonic acid (BAPBDS) represented by the following formula (26), m-cresol 30 mL and 1.65 mL of triethylamine were put into a four-neck flask with an internal volume of 100 mL, and stirred at an internal temperature of 80° C. under a nitrogen stream to form a uniform solution. After the solution was formed, 1.85 g of naphthalene-1,4,5,8-tetracarboxylic dianhydride (NTDA) and 1.65 g of benzoic acid were added to the flask, and the mixture was stirred at 180° C. for 20 hours under a nitrogen stream to perform polymerization. After the polymerization, the obtained polymerization solution was added dropwise into acetone, and the precipitated solid was filtered and dried to obtain a polymer.

[0130]

[0131] Then, the obtained polymer was dissolved in m-cresol so that the concentration was 8% by weight to prepare a casting solution. Then, the prepared casting solution was applied to a glass...

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Abstract

The present invention provides: a novel polyimide containing a diamine component having a fluorene backbone; and a novel polyimide polymer electrolyte membrane containing the polyimide as the principal component thereof, and having properties (for example, high methanol permeation resistance) based on the polyimide. This polyimide contains a constitutional unit (P) that is represented by formula (1). This polyimide polymer electrolyte membrane contains this polyimide as the principal component thereof.

Description

technical field [0001] The present invention relates to a novel polyimide, a polyimide-based polymer electrolyte membrane using the same, a membrane-electrode assembly including the electrolyte membrane, and a solid polymer fuel cell. Background technique [0002] In recent years, fuel cells have attracted attention as a next-generation energy source. In particular, a solid polymer fuel cell (PEFC) using a proton-conductive polymer membrane as an electrolyte membrane has a high energy density and is expected to be used in a wide range of applications such as household cogeneration systems, portable device power supplies, and automotive power supplies. field. The electrolyte membrane of PEFC is required to function as an electrolyte that conducts protons between the fuel electrode and the air electrode, and as a separator that separates the fuel supplied to the fuel electrode from the oxygen (air) supplied to the air electrode. When the function as either the electrolyte or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/10H01B1/06H01M8/02H01M8/10
CPCC08G73/1042C08G73/105H01M8/1011H01M8/1027H01B1/122H01M8/103Y02E60/50H01M8/1004
Inventor 杉谷彻岛津彰西井弘行
Owner NITTO DENKO CORP
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