A kind of preparation method of polybenzimidazole/modified polyepichlorohydrin composite anion exchange membrane

A technology of polyepichlorohydrin and anion exchange membrane, which is applied in the direction of electrochemical generators, fuel cells, electrical components, etc., can solve the problem of ion conductivity decline, limit the wide application of quaternary ammonium salt alkaline anion exchange membranes, and the environment Pollution and other issues, to achieve the effect of reducing hazards, good mechanical properties and chemical stability
CN106543459BActive Publication Date: 2019-06-04CHANGZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHANGZHOU UNIV
Publication Date
2019-06-04

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Abstract

The invention belongs to the field of alkaline fuel cells, and particularly relates to a preparation method of a polybenzimidazole / modified polyepichlorohydrin composite anion-exchange membrane. The preparation method comprises the following steps: after evenly mixing a polybenzimidazole-containing solution with an imidazolium salt modified polyepichlorohydrin solution, evaporating a solvent into a film; and soaking the film in an alkaline solution, and then washing the film to be neutral so as to obtain the composite anion-exchange membrane. The preparation method is simple and efficient, harm to the environment and human bodies is small, and the composite film has good ionic conductivity and stable alkali resistance and mechanical property, and can be applied to the field of alkaline fuel cells.
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Description

technical field

[0001] The invention belongs to the field of alkaline fuel cells, in particular to a method for preparing a polybenzimidazole / modified polyepichlorohydrin composite anion exchange membrane. Background technique

[0002] Alkaline anion exchange membrane (Anion-exchange membrane, AEM) is the core component of Alkaline anion exchange membrane fuel cell (AAEMFC), its role is: (1) to separate the anode and cathode Open, to avoid direct mixing of fuel and air (oxygen) to react; (2) transfer anions from the anode to the cathode to form a loop, etc. Generally, the alkaline anion exchange membrane used in alkaline anion fuel cells needs to meet the following points: (1) better OH - Electrical conductivity; (2) better alkali resistance; (3) better mechanical properties; (4) good thermal stability and so on.

[0003] The most studied AEM is the quaternary ammonium anion exchange membrane. Usually, the preparation of this type of basic anion exchange membrane needs to ...

Claims

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