Diaphragm for alkaline water electrolysis and preparation method thereof

By using a mixing method of zirconia and coupling agent with resin, toughening agent and antioxidant in the preparation of alkali and water electrolytic separators, the environmental pollution and recovery process complexity caused by the use of organic solvents in the prior art is solved, and the solvent-free separators have good performance and environmental protection effects are achieved.

CN119708842APending Publication Date: 2025-03-28SHANGHAI YUXIN JINYUE ENERGY TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202411890703.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-20
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

The existing hydrophilic and highly electrolytic modified PPS composite separators require the use of organic solvents during the preparation process, resulting in environmental pollution and increasing the complexity of the recycling process.

Method used

The alkaline water electrolytic separator is prepared by mixing zirconia and coupling agent with resin, toughening agent and antioxidant, and melt blend granulation and casting film making methods, so that the use of organic solvents is completely avoided.

Benefits of technology

The preparation of alkali and water electrolytic separators without subsequent recycling processes is achieved, with good hydrophilicity, mechanical properties and stability, and is more environmentally friendly.

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Abstract

The invention belongs to the technical field of new materials and engineering, and particularly relates to a diaphragm for alkaline water electrolysis and a preparation method thereof. The diaphragm for alkaline water electrolysis is prepared from the resin, the flexibilizer, the antioxidant, the zirconium oxide and the coupling agent, and no organic solvent is added, so that the subsequent recovery process is avoided, and the diaphragm is more environment-friendly. The diaphragm for alkaline water electrolysis has good hydrophilicity, mechanical properties and relatively high stability. The preparation method for the alkaline water electrolysis diaphragm is simple, does not need a post-treatment process, simplifies the preparation process, is relatively low in cost, and is suitable for large-scale industrial production.
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