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DOI	10.1039/c6ee03079c
	Highly conductive and durable poly(arylene ether sulfone) anion exchange membrane with end-group cross-linking
	Lee K.H.; Cho D.H.; Kim Y.M.; Moon S.J.; Seong J.G.; Shin D.W.; Sohn J.-Y.; Kim J.F.; Lee Y.M.
发表日期	2017
ISSN	17545692
起始页码	275
结束页码	285
卷号	10 期号:1
英文摘要	Here, we demonstrate the improved electrochemical performance and stability of end-group cross-linked anion exchange membranes (AEM) for the first time via the introduction of imidazolium groups in poly(arylene ether sulfone) (Imd-PAES). A novel feature of the cross-linking reaction is that basic additives are not required to prevent gelation with the cationic functional groups. In this work, the sodium salt of 3-hydroxyphenylacetylene acted directly as the end-group cross-linker, and it was cross-linked by thermal treatment at 180°C. The gel fraction and hydroxide conductivity of the cross-linked membranes (XE-Imds) depended on the cross-linking temperature and time. The prepared XE-Imd70 (70 refers to the degree of functionalization) membranes with an ion exchange capacity (IEC) of 2.2 meq g-1 achieved a high hydroxide conductivity (107 mS cm-1). This material also showed good single cell performance (XE-Imd70: 202 mA cm-2 at 0.6 V and a maximum power density of 196.1 mW cm-2) at 80°C, 100% relative humidity (RH), and improved durability and alkaline stability. The excellent hydroxide conductivity and electrochemical performance of XE-Imd70 was due to the fact that the ion cluster size of XE-Imd membranes was larger (12.1-14 nm) than that of E-Imd (5.5-8.14 nm), indicating that XE-Imd membranes have a closely associated ion-clustered morphology, which was confirmed by transmission electron microscopy (TEM) and small angle X-ray scattering (SAXS) measurements. © The Royal Society of Chemistry 2017.
英文关键词	Crosslinking; Ethers; Gelation; High resolution transmission electron microscopy; Ion exchange; Ions; Membranes; Transmission electron microscopy; X ray scattering; Anion exchange membrane; Anion exchange membranes (AEM); Cross linked membranes; Degree of functionalization; Electrochemical performance; Hydroxide conductivities; Poly(arylene ether sulfone); Single cell performance; Ion exchange membranes; cation; durability; electrochemical method; enzyme activity; hydroxide; ion exchange; membrane; performance assessment; relative humidity
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190580
作者单位	Department of Energy Engineering, College of Engineering, Hanyang University, Seoul, 04763, South Korea; Fuel Cell Laboratory, Korea Institute of Energy Research, Daejeon, 34129, South Korea; Department of Energy, Radiation Research Division for Industry and Environment, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, 1266 Sinjeongdong, Jeongeup-si, Jeollabuk-do, 56212, South Korea
推荐引用方式 GB/T 7714	Lee K.H.,Cho D.H.,Kim Y.M.,et al. Highly conductive and durable poly(arylene ether sulfone) anion exchange membrane with end-group cross-linking[J],2017,10(1).
APA	Lee K.H..,Cho D.H..,Kim Y.M..,Moon S.J..,Seong J.G..,...&Lee Y.M..(2017).Highly conductive and durable poly(arylene ether sulfone) anion exchange membrane with end-group cross-linking.Energy & Environmental Science,10(1).
MLA	Lee K.H.,et al."Highly conductive and durable poly(arylene ether sulfone) anion exchange membrane with end-group cross-linking".Energy & Environmental Science 10.1(2017).