TY - JOUR
T1 - Anomalous piezoelectric properties of poly(vinylidene fluoride-trifluoroethylene)/ionic liquid gels
AU - Fukagawa, Miki
AU - Koshiba, Yasuko
AU - Fukushima, Tatsuya
AU - Morimoto, Masahiro
AU - Ishida, Kenji
N1 - Publisher Copyright:
© 2018 The Japan Society of Applied Physics.
PY - 2018/4
Y1 - 2018/4
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85044468882&partnerID=8YFLogxK
U2 - 10.7567/JJAP.57.04FL06
DO - 10.7567/JJAP.57.04FL06
M3 - 学術論文
AN - SCOPUS:85044468882
SN - 0021-4922
VL - 57
JO - Japanese Journal of Applied Physics
JF - Japanese Journal of Applied Physics
IS - 4
M1 - 04FL06
ER -