US 12,291,615 B2
Proton exchange membrane made of a crystalline sulfonated polyimide block copolymer, preparation method and use thereof
Jianhua Fang, Shanghai (CN); Xiaoxia Guo, Shanghai (CN); and Jingjing Tong, Shanghai (CN)
Assigned to SHANGHAI JIAO TONG UNIVERSITY, Shanghai (CN); and JIANGSU LEADER NEW MATERIAL CO., LTD., Jiangsu (CN)
Appl. No. 17/610,569
Filed by SHANGHAI JIAO TONG UNIVERSITY, Shanghai (CN); and JIANGSU LEADER NEW MATERIAL CO., LTD., Wuxi (CN)
PCT Filed Aug. 21, 2020, PCT No. PCT/CN2020/110481
§ 371(c)(1), (2) Date Nov. 11, 2021,
PCT Pub. No. WO2021/043009, PCT Pub. Date Mar. 11, 2021.
Claims priority of application No. 201910838955.7 (CN), filed on Sep. 5, 2019.
Prior Publication US 2022/0213282 A1, Jul. 7, 2022
Int. Cl. C08J 5/22 (2006.01); C08G 73/10 (2006.01); H01M 8/103 (2016.01); H01M 8/1072 (2016.01)
CPC C08J 5/2256 (2013.01) [C08G 73/1042 (2013.01); C08G 73/1075 (2013.01); H01M 8/103 (2013.01); H01M 8/1072 (2013.01); C08J 2379/08 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A proton exchange membrane made of a crystalline sulfonated polyimide block copolymer, wherein the crystalline sulfonated polyimide block copolymer has a chemical structure as shown in Formula I:

OG Complex Work Unit Chemistry
in which,
Ar1 group is an aromatic group containing a naphthyl group;
Ar2 group is an aromatic group containing at least one sulfonate group; and
x is in the range of 5-100, m is in the range of 1-200, and n is in the range of 5-500.