Branched poly(ether ether ketone) based anion exchange membrane for H2/O2 fuel cell

被引：36

作者：

Wang, Kaifeng ^{[1
]}

Wu, Qi ^{[1
]}

Yan, Xiaoming ^{[1
,2
]}

Liu, Jiafei ^{[1
]}

Gao, Li ^{[1
]}

Hu, Lei ^{[1
]}

Zhang, Ning ^{[1
]}

Pan, Yu ^{[1
]}

Zheng, Wenji ^{[1
]}

He, Gaohong ^{[1
,2
]}

机构：

[1] Dalian Univ Technol, Sch Chem Engn, Sch Petr & Chem Engn, State Key Lab Fine Chem, 2 Dagong Rd, Panjin 124221, LN, Peoples R China

[2] Dalian Univ Technol, Panjin Inst Ind Technol, 2 Dagong Rd, Panjin 124221, LN, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2019年 / 44卷 / 42期

基金：

美国国家科学基金会;

关键词：

Branched polymer; Poly(ether ether ketone); Anion exchange membrane; Fuel cell; HYDROXIDE CONDUCTIVITY; MULTIBLOCK COPOLYMERS; IMIDAZOLIUM CATIONS; ALKALINE STABILITY; ION-TRANSPORT; SIDE-CHAINS; PERFORMANCE; SULFONE)S; POLYSULFONE; ELECTROLYTE;

D O I：

10.1016/j.ijhydene.2019.07.080

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：

High-performance anion exchange membranes (AEMs) are in need for practical application of AEM fuel cells. Novel branched poly(ether ether ketone) (BPEEK) based AEMs were prepared by the copolymerization of phloroglucinol, methylhydroquinone and 4,4'-difluorobenzophenone and following functionalization. The effects of the branched polymer structures and functional groups on the membrane's properties were investigated. The swelling ratios of all the membranes were kept below 15% at room temperature and had good dimensional stability at elevated temperatures. The branching degree has almost no effect on the dimensional change, but plays a great role in tuning the nanophase separation structure. The cyclic ammonium functionalized membrane showed a lower conductivity but a much better stability than imidazolium one. The BPEEK-3-Pip-53 membrane with the branching degree of 3% and piperidine functionalization degree of 53% showed the best performances. The ionic conductivity was 43 mS cm(-1) at 60 degrees C. The ionic conductivity in 1 M KOH at 60 degrees C after 336 h was 75% of its initial value (25% loss of conductivity), and the IEC was 83% of its initial value (17% loss of IEC), suggesting good alkaline stability. The peak energy density (60 degrees C) of the single H-2/O-2 fuel cell with BPEEK-3-Pip-53 membrane reached 133 mW cm(-2) at 260 mA cm(-2). (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：23750 / 23761

页数：12

共 56 条

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