Anomalous piezoelectric properties of poly(vinylidene fluoride-trifluoroethylene)/ionic liquid gels

Miki Fukagawa, Yasuko Koshiba, Tatsuya Fukushima, Masahiro Morimoto, Kenji Ishida

研究成果: ジャーナルへの寄稿学術論文査読

7 被引用数 (Scopus)

抄録

Piezoelectric gels were prepared from low-volatile ionic liquid (IL) 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([Emim][TFSI]) gels, and their structural, ferroelectric, and piezoelectric properties were investigated. Poly(vinylidene fluoride-trifluoroethylene) P(VDF-TrFE)/IL gels were formed using thermally reversible physical gels. The structural characterization indicated that the P(VDF-TrFE) molecules in the gels predominantly formed a ferroelectric phase (Form I) of P(VDF-TrFE). Polarization switching peaks were clearly observed using a three-layer stacked device structure. The coercive field of the P(VDF-TrFE)/IL gels substantially decreased to 4-9 MV/m, and their remnant polarizations were maintained at 63-71 mC/m2, which is similar to that for typical solid-state P(VDF-TrFE). Finally, the P(VDF-TrFE)/IL gel films exhibited a piezoelectric response, and the highest piezoelectric coefficient was ∼300 pm/V at an applied voltage frequency of 4kHz.

本文言語英語
論文番号04FL06
ジャーナルJapanese Journal of Applied Physics
57
4
DOI
出版ステータス出版済み - 2018/04

ASJC Scopus 主題領域

  • 工学一般
  • 物理学および天文学一般

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