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Phase behavior and Li+ Ion conductivity of styrene-ethylene oxide multiblock copolymer electrolytes
https://repo.qst.go.jp/records/47867
https://repo.qst.go.jp/records/478677b99be11-89c2-4bb9-8409-95b333fca61d
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2017-04-27 | |||||
| タイトル | ||||||
| タイトル | Phase behavior and Li+ Ion conductivity of styrene-ethylene oxide multiblock copolymer 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 | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
M., Sarapas Joel
× M., Sarapas Joel× Saijo, Kenji× ザオ, ユエ× Takenaka, Mikihito× N., Tew Gregory× ザオ ユエ |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Solid polymer electrolytes are attractive materials for use as battery separators. Here, a molecular weight series of polystyrene–polyethylene oxide (PEO) multiblock copolymers was synthesized by the thiol–norbornene click reaction. The subsequent materials were characterized both neat and with a lithium bis-(trifluoromethane)sulfonimide salt loading [(Li)/(EO)] of 0.1. In general, neat samples demonstrated crystallinity scaling with PEO content. Lithium ion-containing samples had broad scattering peaks, half of which displayed disordered scattering, even at the lowest block molecular weights (polystyrene = 1 kg/mol, PEO = 1 kg/mol). Fitting of disordered scattering data, using the random phase approximation, yielded χRPA and Rg values that were compared with recent predictive work by Balsara and coworkers. The predictions were accurate near the volume fraction fPEO = 0.5 but deviated symmetrically with volume fraction asymmetry. Samples were also analyzed by electrochemical impedance spectroscopy for their potential to conduct lithium ions. Samples with fPEO ≥ 0.5 demonstrated robust conductivity, whereas samples below this volume fraction conducted very poorly, with one exception (fPEO = 0.24). This work expanded upon our recently reported approach to multiblock copolymer synthesis, demonstrating the improved access of materials to further our fundamental understanding of multiblock copolymers. | |||||
| 書誌情報 |
Polymers for Advanced Technologies 巻 27, 号 7, p. 946-954, 発行日 2017-02 |
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| 出版者 | ||||||
| 出版者 | Wiley Online Library | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 1042-7147 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1002/pat.3753 | |||||
