DICP OpenIR
Enhanced water transport in AEMs based on poly(styrene-ethylene-butylene-styrene) triblock copolymer for high fuel cell performance
Gao, Xueqiang1,2; Yu, Hongmei1; Qin, Bowen1,2; Jia, Jia1,2; Hao, Jinkai1,2; Xie, Feng1,2; Shao, Zhigang1
Corresponding AuthorYu, Hongmei(hmyu@dicp.ac.cn) ; Shao, Zhigang(zhgshao@dicp.ac.cn)
Source PublicationPOLYMER CHEMISTRY
2019-04-21
ISSN1759-9954
DOI10.1039/c8py01618f
Volume10Issue:15Pages:1894-1903
Funding ProjectNational Natural Science Foundations of China[U1664259] ; CAS-DOE Cooperation Project[121421KYSB20160009] ; National Key Research and Development Program of China[2016YFB0101205] ; National Key Research and Development Program of China[2018YFB1502303]
Funding OrganizationNational Natural Science Foundations of China ; National Natural Science Foundations of China ; CAS-DOE Cooperation Project ; CAS-DOE Cooperation Project ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundations of China ; National Natural Science Foundations of China ; CAS-DOE Cooperation Project ; CAS-DOE Cooperation Project ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundations of China ; National Natural Science Foundations of China ; CAS-DOE Cooperation Project ; CAS-DOE Cooperation Project ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundations of China ; National Natural Science Foundations of China ; CAS-DOE Cooperation Project ; CAS-DOE Cooperation Project ; National Key Research and Development Program of China ; National Key Research and Development Program of China
WOS SubjectPolymer Science
WOS Research AreaPolymer Science
WOS KeywordANION-EXCHANGE MEMBRANE ; ELECTRODE PARAMETERS ; CATALYSTS ; STABILITY ; IONOMERS
AbstractAnion exchange membrane fuel cells (AEMFCs) have received a considerable amount of attention in the past decades as a lower cost alternative to proton exchange membrane fuel cells (PEMFCs). However, limitations in performance and stability have hindered the AEMFC development, and poor water management was a major reason. In the AEMFCs, water is both electrochemically generated at the anode and consumed at the cathode during cell operation, so water transport is particularly important because of its severe intrinsic imbalance. In this work, a high conductivity and stability anion exchange membrane and a soluble, conductive ionomer based on triblock copolymer poly(styrene-ethylene-butylene-styrene) (SEBS) were synthesized successfully. The OH-conductivity of the AEM was over 0.1 S cm(-1) at 80 degrees C. Remarkably, the AEM could be stable in 1 M KOH at 60 degrees C for over 1700 h, and the conductivity decreased only 26% (from 60.77 to 44.91 mS cm(-1) at 30 degrees C). Moreover, the QASEBS AEM exhibited a good water transport property in ex situ characterization, which contributed to improving water management in AEMFCs. Besides, H-2/O-2 fuel cells with the AEMs and ionomer were operated at 60 degrees C, and the results showed that the cathode dew points and the thickness of the AEMs played a key role in the AEMFC performance, and the cathode unsaturated humidification was conducive to improving the performance, which was ascribed to the fact that the increase of the concentration gradient of water between the anode and the cathode contributed to the water back diffusion from the anode to the cathode. Moreover, the back diffusion not only relieved the flooding at the anode, but replenished water consumed at the cathode. After optimization, the AEMFC performance reached 721.7 mW cm(-2) at the cell temperature of 60 degrees C and the anode/cathode dew point of 60 degrees C/50 degrees C.
Language英语
Funding OrganizationNational Natural Science Foundations of China ; National Natural Science Foundations of China ; CAS-DOE Cooperation Project ; CAS-DOE Cooperation Project ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundations of China ; National Natural Science Foundations of China ; CAS-DOE Cooperation Project ; CAS-DOE Cooperation Project ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundations of China ; National Natural Science Foundations of China ; CAS-DOE Cooperation Project ; CAS-DOE Cooperation Project ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundations of China ; National Natural Science Foundations of China ; CAS-DOE Cooperation Project ; CAS-DOE Cooperation Project ; National Key Research and Development Program of China ; National Key Research and Development Program of China
WOS IDWOS:000464406700002
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/165577
Collection中国科学院大连化学物理研究所
Corresponding AuthorYu, Hongmei; Shao, Zhigang
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, Fuel Cell Syst & Engn Lab, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Gao, Xueqiang,Yu, Hongmei,Qin, Bowen,et al. Enhanced water transport in AEMs based on poly(styrene-ethylene-butylene-styrene) triblock copolymer for high fuel cell performance[J]. POLYMER CHEMISTRY,2019,10(15):1894-1903.
APA Gao, Xueqiang.,Yu, Hongmei.,Qin, Bowen.,Jia, Jia.,Hao, Jinkai.,...&Shao, Zhigang.(2019).Enhanced water transport in AEMs based on poly(styrene-ethylene-butylene-styrene) triblock copolymer for high fuel cell performance.POLYMER CHEMISTRY,10(15),1894-1903.
MLA Gao, Xueqiang,et al."Enhanced water transport in AEMs based on poly(styrene-ethylene-butylene-styrene) triblock copolymer for high fuel cell performance".POLYMER CHEMISTRY 10.15(2019):1894-1903.
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