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Piperidinium-functionalized anion exchange membranes and their application in alkaline fuel cells and water electrolysis

文献类型：期刊论文

作者Chu, Xiaomeng1,2; Shi, Yan4,5; Liu, Lei1,3; Huang, Yingda1; Li, Nanwen1,2
刊名JOURNAL OF MATERIALS CHEMISTRY A
出版日期2019-04-07
卷号7期号:13页码:7717-7727
ISSN号2050-7488
DOI10.1039/c9ta01167f
通讯作者Liu, Lei(liulei@ahnu.edu.cn) ; Huang, Yingda(huangyd@sxicc.ac.cn) ; Li, Nanwen(linanwen@sxicc.ac.cn)
英文摘要To produce a stable anion exchange membrane (AEM) for deployable electrochemical devices with a long lifespan, we here present the synthesis and properties of a series of piperidinium-functionalized poly(2,6-dimethyl phenylene oxide)s with different locations of piperidinium groups along the polymer backbones. A distinct phase separated morphology was observed for long side-chain-type AEMs (LSCPi) as confirmed by AFM analysis, which in turn enabled its higher hydroxide conductivity over side-chain-type (SCPi) and standard benzylmethyl piperidinium AEMs (BPi). A hydroxide conductivity of 29.0 mScm(-1) at 20 degrees C was achieved for the LSCPi membrane with an IEC value of 1.57 meq. g(-1). This level of conductivity was lower than that of the corresponding QA-based AEMs (LSCQA) (38.7 mS cm(-1) at 20 degrees C), probably as a result of its low IEC accompanied by low water uptake. The LSCPi membrane displayed excellent alkaline stability with 98% retention in conductivity after 560 h of testing in 1 M NaOH at 80 degrees C, and no obvious degradation was detected by NMR analysis of the aged sample. To demonstrate the feasibility of piperidinium-functionalized AEMs, both SCPi and LSCPi membranes were fabricated into a membrane electrode assembly for the H-2/O-2 alkaline fuel cell and AEM water electrolyzer applications. The highly conductive LSCPi membrane showed good cell performance with a peak power density of 116 mW cm(-2) at 60 degrees C in alkaline fuel cells and 300 mA cm(-2) at 1.80 V at 50 degrees C in AEM water electrolysis working with pure water. Although a gradual drop in performance was observed for both the alkaline fuel cell and water electrolyser durability testing at a constant current during the test of 8.7 h and 35 h respectively, the high durability of AEMs having piperidinium cations was verified by post-mortem analysis of aged AEMs by NMR spectroscopy. The current findings provided fundamental insights into the durability of AEMs under ex situ and in situ operating conditions and demonstrated that the piperidinium-functionalized AEM appears to be a promising material for durable AEM-based devices.
WOS关键词QUATERNARY AMMONIUM CATIONS ; POLY(ARYLENE ETHER SULFONE) ; SIDE-CHAINS ; PERFORMANCE ; STABILITY ; CONDUCTIVITY ; COPOLYMERS ; TRANSPORT ; POLYMERS ; SPACERS
资助项目National Natural Science Foundation of China[21835005] ; Science and Technology Major Projects of Shanxi Province of China[20181102019] ; Hundred Talents Program of the Chinese Academy of Sciences ; Hundred Talents Program of the Shanxi Province ; Autonomous Research Project of SKLCC ; Shell Global Solutions International B.V.[PT79192]
WOS研究方向Chemistry ; Energy & Fuels ; Materials Science
语种英语
WOS记录号WOS:000463819400042
出版者ROYAL SOC CHEMISTRY
资助机构National Natural Science Foundation of China ; Science and Technology Major Projects of Shanxi Province of China ; Hundred Talents Program of the Chinese Academy of Sciences ; Hundred Talents Program of the Shanxi Province ; Autonomous Research Project of SKLCC ; Shell Global Solutions International B.V.
源URL[http://ir.giec.ac.cn/handle/344007/24843]  
专题中国科学院广州能源研究所
通讯作者Liu, Lei; Huang, Yingda; Li, Nanwen
作者单位1.Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Shanxi, Peoples R China
2.Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
3.Anhui Normal Univ, Coll Chem & Mat Sci, Minist Educ, Key Lab Funct Mol Solids, Wuhu 241000, Peoples R China
4.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
5.Key Lab New & Renewable Energy Res & Dev Guangdon, Guangzhou 510640, Guangdong, Peoples R China
推荐引用方式
GB/T 7714		 Chu, Xiaomeng,Shi, Yan,Liu, Lei,et al. Piperidinium-functionalized anion exchange membranes and their application in alkaline fuel cells and water electrolysis[J]. JOURNAL OF MATERIALS CHEMISTRY A,2019,7(13):7717-7727.
APA Chu, Xiaomeng,Shi, Yan,Liu, Lei,Huang, Yingda,&Li, Nanwen.(2019).Piperidinium-functionalized anion exchange membranes and their application in alkaline fuel cells and water electrolysis.JOURNAL OF MATERIALS CHEMISTRY A,7(13),7717-7727.
MLA Chu, Xiaomeng,et al."Piperidinium-functionalized anion exchange membranes and their application in alkaline fuel cells and water electrolysis".JOURNAL OF MATERIALS CHEMISTRY A 7.13(2019):7717-7727.

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来源：广州能源研究所

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