Synthesis and characterization of a novel sulfonated poly (aryl ether ketone sulfone) semi-crosslinked membrane with high proton selectivity through click reaction for direct methanol fuel cells

被引：3
作者：
Yuan, Chengyun [1 ]
Wang, Yinghan [1 ]
机构：
[1] Sichuan Univ, Coll Polymer Sci & Engn, State Key Lab Polymer Mat Engn, Chengdu 610065, Peoples R China
来源：
HIGH PERFORMANCE POLYMERS | 2021年 / 33卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Sulfonated poly (aryl ether ketone sulfone); semi-crosslinked membrane; click reaction; methanol permeability; proton conductivity; EXCHANGE MEMBRANE; ELECTROLYTE MEMBRANE; COMPOSITE MEMBRANE; HIGH-PERFORMANCE; GRAPHENE OXIDE; FACILE; DMFC;
D O I：
10.1177/0954008320960216
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A novel sulfonated polyvinyl alcohol containing alkynyl groups (SPVA-C equivalent to C) and a new sulfonated poly (aryl ether ketone sulfone) (SPAEKS) are synthesized. Semi-crosslinked membrane (semi-crosslink-SPAEKS-x) was prepared by click reaction of mercapto-alkynes between 1, 5-pentanedithiol and SPVA-C equivalent to C. The chemical structures of SPAEKS, SPVA-C equivalent to C and semi-crosslink-SPAEKS-x are confirmed by(1)H-NMR and FTIR spectra. The semi-crosslink-SPAEKS-x membranes show good mechanical properties, excellent dimensional stability and oxidative stability. The proton conductivity of SPAEKS and semi-crosslink-SPAEKS-x membranes is in the range of 25.6-52.5 mS/cm. The methanol permeability of semi-crosslink-SPAEKS-x membranes is in the range of 1.4-1.7 x 10(-7)cm(-2)s(-1), which is much lower than that of Nafion 117 membrane (18.3 x 10(-7)cm(-2)s(-1)). Especially, the proton selectivity of semi-crosslink-SPAEKS-15 membrane (24.3 x 10(4)S s cm(-3)) is above seven times higher than that of Nafion 117 membrane (3.4 x 10(4)S s cm(-3)).
引用
收藏
页码：345 / 357
页数：13
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