ICCAS OpenIR
Suppression of crystallization in a plastic crystal electrolyte (SN/LiClO4) by a polymeric additive (polyethylene oxide) for battery applications
Yue, Ruijuan1,2; Niu, Yanhua1; Wang, Zhigang1; Douglas, Jack F.3; Zhu, Xingqi4; Chen, Erqiang4
2009-02-23
Source PublicationPOLYMER
ISSN0032-3861
Volume50Issue:5Pages:1288-1296
AbstractA basic problem with many promising solid electrolyte materials for battery applications is that crystallization in these materials at room temperature makes ionic mobilities plummet, thus compromising battery function. In the present work, we consider the use of a polymer additive (polyethylene oxide, PEO) to inhibit the crystallization of a promising battery electrolyte material, the organic crystal forming molecule succinonitrile (SN) mixed with a salt (LiClO4). While SN spherulite formation still occurs at low PEO concentrations, the SN spherulites become progressively irregular and smaller with an increasing PEO concentration until a 'critical' PEO concentration (20% molar fraction PEO) is reached where SN crystallization is no longer observable by optical microscopy at room temperature. Increasing the PEO concentration further to 70% (molar fraction PEO) leads to a high PEO concentration regime where PEO spherulites become readily apparent by optical microscopy. Additional diffraction and thermodynamic measurements establish the predominantly amorphous nature of our electrolyte-polymer mixtures at intermediate PEO concentrations (20-60% molar fraction PEO) and electrical conductivity measurements confirm that these complex mixtures exhibit the phenomenology of glass-forming liquids. Importantly, the intermediate PEO concentration electrolyte-polymer mixtures retain a relatively high conductivity at room temperature in comparison to the semicrystalline materials that are obtained at low and high PEO concentrations. We have thus demonstrated an effective strategy for creating highly conductive and stable conductive polymer-electrolyte materials at room temperature that are promising for battery applications. (c) 2009 Elsevier Ltd. All rights reserved.
KeywordCrystallization Plastic Crystal Electrolyte Polyethylene Oxide
DOI10.1016/j.polymer.2009.01.022
Indexed BySCI
Language英语
WOS IDWOS:000263955800028
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:24[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/66264
Collection中国科学院化学研究所
Corresponding AuthorWang, Zhigang
Affiliation1.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, CAS Key Lab Engn Plast, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
3.NIST, Div Polymers, Gaithersburg, MD 20899 USA
4.Peking Univ, Coll Chem & Mol Engn, Key Lab Polymer Chem & Phys, Minist Educ,Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
Yue, Ruijuan,Niu, Yanhua,Wang, Zhigang,et al. Suppression of crystallization in a plastic crystal electrolyte (SN/LiClO4) by a polymeric additive (polyethylene oxide) for battery applications[J]. POLYMER,2009,50(5):1288-1296.
APA Yue, Ruijuan,Niu, Yanhua,Wang, Zhigang,Douglas, Jack F.,Zhu, Xingqi,&Chen, Erqiang.(2009).Suppression of crystallization in a plastic crystal electrolyte (SN/LiClO4) by a polymeric additive (polyethylene oxide) for battery applications.POLYMER,50(5),1288-1296.
MLA Yue, Ruijuan,et al."Suppression of crystallization in a plastic crystal electrolyte (SN/LiClO4) by a polymeric additive (polyethylene oxide) for battery applications".POLYMER 50.5(2009):1288-1296.
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