The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 02, 2024
Filed:
Mar. 19, 2020
Dalian University of Technology, Liaoning, CN;
Xuemei Wu, Liaoning, CN;
Gaohong He, Liaoning, CN;
Xiaozhou Wang, Liaoning, CN;
Xiaoming Yan, Liaoning, CN;
Tiantian Li, Liaoning, CN;
Wanting Chen, Liaoning, CN;
Xiangcun Li, Liaoning, CN;
Wu Xiao, Liaoning, CN;
Xiaobin Jiang, Liaoning, CN;
Fujun Cui, Liaoning, CN;
Yan Dai, Liaoning, CN;
Xuehua Ruan, Liaoning, CN;
DALIAN UNIVERSITY OF TECHNOLOGY, Liaoning, CN;
Abstract
The present invention belongs to the field of alkaline polymer electrolyte membranes, and relates to a comb-shaped structure polybenzimidazole anion exchange membrane with high conductivity and preparation method thereof. In the invention, firstly, polybenzimidazole is grafted with the non-cationic side chains to the max grafting rate to synthesize the de-protonated comb-shaped polybenzimidazole material, avoiding the N—H in benzimidazole forms ionic binding with cationic functional groups, which will reduce the reactivity and mobility of cationic groups; then react de-protonated comb-shaped polybenzimidazole with quaternization reagent to attach the pendent side chain with cationic functional groups, making it easy to aggregate to form ion clusters and hydrophilic/hydrophobic microphase separation. The anion exchange membrane prepared in this invention has excellent conductivity, mechanical properties and alkaline stability.