Cross-linked high-temperature proton exchange membrane and preparation method thereof

• Main Authors: YANG HUI, YANG CHENG, ZHENG BOWEN, JI FENG, LUO RUOYIN, XIE JINGYING, DENG CHENGWEI
• Format: Patent
• Language: Chinese; English
• Published: 13.06.2023
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; ELECTRICITY; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

The invention discloses a cross-linked high-temperature proton exchange membrane and a preparation method thereof, the cross-linked high-temperature proton exchange membrane is used for a high-temperature proton exchange membrane fuel cell, the high-temperature proton exchange membrane is obtained by taking linear arylether polybenzimidazole (OPBI) as a raw material and 2, 6-pyridine dimethanol as a cross-linking agent through in-situ covalent cross-linking membrane forming by a tape casting method, the 2, 6-pyridine dimethyl carbinol is obtained by carrying out nucleophilic substitution reaction on imidazole and 2, 6-pyridine dimethyl carbinol. The preparation process is simple, the raw material cost is low, and the prepared membrane with the cross-linked structure has the advantages of strong proton conduction capability, good chemical stability and the like after being doped with phosphoric acid, and has wide application prospects in high-temperature proton exchange membrane fuel cells. 本发明公开了一种交联型高温质子交换膜及