Sulfonimide-Containing Triblock Copolymers for Improved Conductivity and Mechanical Performance

Chainika Jangu, Alice M. Savage, Zhiyang Zhang, Alison R. Schultz, Louis A. Madsen, Frederick L. Beyer, Timothy Edward Long*

*この研究の対応する著者

研究成果: Article査読

62 被引用数 (Scopus)

抄録

Ion-containing block copolymers continue to attract significant interest as conducting membranes in energy storage devices. Reversible addition-fragmentation chain transfer (RAFT) polymerization enables the synthesis of well-defined ionomeric A-BC-A triblock copolymers, featuring a microphase-separated morphology and a combination of excellent mechanical properties and high ion transport. The soft central "BC" block is composed of poly(4-styrenesulfonyl(trifluoromethylsulfonyl)imide) (poly(Sty-Tf2N)) with -SO2-N--SO2-CF3 anionic groups associated with a mobile lithium cation and low-Tg di(ethylene glycol)methyl ether methacrylate (DEGMEMA) units. External polystyrene A blocks provide mechanical strength with nanoscale morphology even at high ion content. Electrochemical impedance spectroscopy (EIS) and pulse-field-gradient (PFG) NMR spectroscopy have clarified the ion transport properties of these ionomeric A-BC-A triblock copolymers. Results confirmed that well-defined ionomeric A-BC-A triblock copolymers combine improved ion-transport properties with mechanical stability with significant potential for application in energy storage devices.

本文言語English
ページ(範囲)4520-4528
ページ数9
ジャーナルMacromolecules
48
13
DOI
出版ステータスPublished - 2015 7月 14
外部発表はい

ASJC Scopus subject areas

  • 有機化学
  • ポリマーおよびプラスチック
  • 無機化学
  • 材料化学

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