Polymer Electrolytes Containing Solvate Ionic Liquids: A New Approach To Achieve High Ionic Conductivity, Thermal Stability, and a Wide Potential Window | Zendy

Yuzo Kitazawa | Zendy; Kaori Iwata | Zendy; Ryosuke Kido | Zendy; Satoru Imaizumi | Zendy; Seiji Tsuzuki | Zendy; Wataru Shinoda | Zendy; Kazuhide Ueno | Zendy; Toshihiko Mandai | Zendy; Hisashi Kokubo | Zendy; Kaoru Dokko | Zendy; Masayoshi Watanabe | Zendy

Open Access

Polymer Electrolytes Containing Solvate Ionic Liquids: A New Approach To Achieve High Ionic Conductivity, Thermal Stability, and a Wide Potential Window

Author(s) -

Yuzo Kitazawa,

Kaori Iwata,

Ryosuke Kido,

Satoru Imaizumi,

Seiji Tsuzuki,

Wataru Shinoda,

Kazuhide Ueno,

Toshihiko Mandai,

Hisashi Kokubo,

Kaoru Dokko,

Masayoshi Watanabe

Publication year - 2017

Publication title -

chemistry of materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.741

H-Index - 375

eISSN - 1520-5002

pISSN - 0897-4756

DOI - 10.1021/acs.chemmater.7b04274

Subject(s) - materials science , electrolyte , ionic conductivity , thermal stability , electrochemical window , polymer , copolymer , polymer chemistry , ionic bonding , electrochemistry , anode , chemical engineering , chemistry , ion , organic chemistry , electrode , composite material , engineering

We describe here the electrochemical properties and battery performance of polymer electrolytes composed of ABA-triblock copolymers and Li-glyme solvate ionic liquids (SILs), which consist of the [Li(glyme)]+ complex cation and bis(trifluoromethanesulfoly)amide ([TFSA]−) anion, to simultaneously achieve high ionic conductivity, thermal stability, and a wide potential window. Three different block copolymers, consisting of a SIL-incompatible A segment (polystyrene, PSt) and SIL-compatible B segments (poly(methyl methacrylate) (PMMA), poly(ethylene oxide) (PEO), and poly(butyl acrylate) (PBA)) were synthesized. The SILs were solidified with the copolymers through physical cross-linking by the self-assembly of the PSt segment. The thermal and electrochemical properties of the polymer electrolytes were significantly affected by the stability of the [Li(glyme)]+ complex in the block copolymer B segments, and the preservation of the SILs contributed to their thermal stabilities and oxidation stabilities greater...

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