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Does Li-ion transport occur rapidly in localized high-concentration electrolytes?†
http://hdl.handle.net/10131/00014934
http://hdl.handle.net/10131/00014934bd750dff-e20a-4eb9-a405-33bac6858dc8
| 名前 / ファイル | ライセンス | アクション |
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SL_LiFSA_HFE_MS_revised.pdf (2.0 MB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2022-01-31 | |||||
| タイトル | ||||||
| タイトル | Does Li-ion transport occur rapidly in localized high-concentration electrolytes?† | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| 著者 |
Yoshifumi, Watanabe
× Yoshifumi, Watanabe× Yosuke, Ugata× Kazuhide, Ueno× Masayoshi, Watanabe× Kaoru, Dokko |
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| 著者所属 | ||||||
| 値 | Department of Chemistry and Life Science, Yokohama National University | |||||
| 著者所属 | ||||||
| 値 | Department of Chemistry and Life Science, Yokohama National University & Advanced Chemical Energy Research Center (ACERC), Institute of Advanced Sciences, Yokohama National University | |||||
| 著者所属 | ||||||
| 値 | Department of Chemistry and Life Science, Yokohama National University & Advanced Chemical Energy Research Center (ACERC), Institute of Advanced Sciences, Yokohama National University | |||||
| 著者所属 | ||||||
| 値 | Advanced Chemical Energy Research Center (ACERC), Institute of Advanced Sciences, Yokohama National University | |||||
| 著者所属 | ||||||
| 値 | Department of Chemistry and Life Science, Yokohama National University & Advanced Chemical Energy Research Center (ACERC), Institute of Advanced Sciences, Yokohama National University | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The ionic conductivity and lithium-ion transference number of electrolytes significantly influence the rate capability of Li-ion batteries. Highly concentrated Li-salt/sulfolane (SL) electrolytes exhibit elevated Li+ transference numbers due to lithium-ion hopping via a ligand exchange mechanism within their –Li+–SL–Li+– network. However, highly concentrated electrolytes (HCEs) are extremely viscous and have an ionic conductivity that is one order of magnitude less than that of conventional electrolytes. Dilution of HCEs with a non-coordinating hydrofluoroether (HFE) lowers the viscosity and produces localized high-concentration electrolytes (LHCE). However, the mechanism of Li+ transport in LHCEs is unclear. This study investigated the transport properties of LHCEs prepared by diluting a SL-based HCE with 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropyl ether. Electrolyte viscosity decreases dramatically upon dilution, whereas ionic conductivity increases only slightly. Ion diffusivity increases with increasing HFE content due to the decrease in electrolyte viscosity. However, the Li+ transference number declines, because the HFE interferes with conduction via the Li+ hopping mechanism. The resulting decrease in the product of ionic conductivity and Li+ transference number indicates superior lithium-ion transport in the parent HCE compared with LHCEs. | |||||
| 書誌情報 |
Physical Chemistry Chemical Physics 巻 25, 号 4, p. 3092-3099, 発行日 2022-11-02 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 1463-9084 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA11301773 | |||||
| DOI | ||||||
| 関連タイプ | isVersionOf | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | info:doi/10.1039/D2CP05319E | |||||
| 著者版フラグ | ||||||
| 出版タイプ | AM | |||||
| 出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
| 出版者 | ||||||
| 出版者 | Royal Society of Chemistry | |||||
| 関係URI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1039/D2CP05319E | |||||
| 関連名称 | https://doi.org/10.1039/D2CP05319E | |||||
