| Dynamic transport in Li-conductive polymer electrolytes plasticized with poly(ethylene glycol)-borate/aluminate ester. | |
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MedLine Citation:
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PMID: 19554596 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
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The addition of plasticizers into Li(+)-conductive solid polymer electrolytes (SPEs) is a commonly known technique to enhance the ionic conductivity. Among the used plasticizers, alkoxides of group-13 elements [such as poly(ethylene glycol) (PEG)-borate ester] are promising candidates due to the Lewis acidity of the elements of this group (i.e. B, Al, and so on), which interact with the anions and may increase the degree of dissociation of the salts and the transport number of the SPEs. By means of pulsed-gradient stimulated-echo NMR (PGStE-NMR) and AC impedance measurements, we investigate the effect of Lewis acidity originated from group-13 elements on the transport number and the dissociation rate of SPEs containing various plasticizers. Our results show that the degree of salt dissociation is significantly enhanced by the addition of plasticizers including group-13 elements, whereas only a small or negligible increase of the transport number is observed for these SPEs. We infer that the plasticizers exhibiting Lewis acidity associate with the anions, and that the associated pairs can migrate in the SPEs as fast as free anions, which results in a lower transport number than expected. |
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Authors:
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Fuminari Kaneko; Shinta Wada; Masanobu Nakayama; Masataka Wakihara; Shigeki Kuroki |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Chemphyschem : a European journal of chemical physics and physical chemistry Volume: 10 ISSN: 1439-7641 ISO Abbreviation: Chemphyschem Publication Date: 2009 Aug |
Date Detail:
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Created Date: 2009-08-03 Completed Date: 2009-10-05 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 100954211 Medline TA: Chemphyschem Country: Germany |
Other Details:
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Languages: eng Pagination: 1911-5 Citation Subset: - |
Affiliation:
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Department of Applied Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama Meguro-ku Tokyo 152-8552, Japan. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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