A benzyltetramethylimidazolium-based membrane with exceptional alkaline stability in fuel cells: role of its structure in alkaline stability

被引：102

作者：

Zhu, Yuan ^{[1
]}

He, Yubin ^{[1
]}

Ge, Xiaolin ^{[1
]}

Liang, Xian ^{[1
]}

Shehzad, Muhammad A. ^{[1
]}

Hu, Min ^{[1
]}

Liu, Yazhi ^{[1
]}

Wu, Liang ^{[1
]}

Xu, Tongwen ^{[1
]}

机构：

[1] Univ Sci & Technol China, Sch Chem & Mat Sci, Collaborat Innovat Ctr Chem Energy Mat, CAS Key Lab Soft Matter Chem, Hefei 230026, Anhui, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2018年 / 6卷 / 02期

基金：

中国国家自然科学基金;

关键词：

ANION-EXCHANGE MEMBRANES; POLYMER ELECTROLYTE MEMBRANES; POLY(ARYLENE ETHER SULFONE); SIDE-CHAINS; IMIDAZOLIUM SALT; HEAD-GROUPS; CONDUCTIVITY; DEGRADATION; CATALYSTS; KETONE);

D O I：

10.1039/c7ta09095a

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A highly alkaline stable anion exchange membrane is a critical component in alkaline polyelectrolyte fuel cells (APEFCs). However, the commonly employed cationic moieties in the membrane show limited alkaline stability, thereby barely enduring harsh fuel cell operating conditions. In this study, we synthesized a series of imidazolium-type anion-exchange membranes, in which the substituents were attached at different positions of the imdazolium ring to systematically investigate their impact on the overall alkaline stability of the cationic moieties. 1,2,4,5-Tetramethylimidazolium-functionalized anion-exchange membrane has highest alkaline stability, and it retains 97% alkaline stability after 7 days in a 1 M NaOD/D2O/CD3OD solution at 60 degrees C. Compared to the recently reported imidazolium-type membranes, the resultant membrane exhibits unprecedented fuel cell performance to date, reaching an exceptional excellent peak power density of 340 mW cm(-2) at 80 degrees C.

引用

页码：527 / 534

页数：8

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