TY - JOUR
T1 - Polymerized ionic liquids with guanidinium cations as host for gel polymer electrolytes in lithium metal batteries
AU - Li, Mingtao
AU - Yang, Li
AU - Fang, Shaohua
AU - Dong, Siming
AU - Hirano, Shin Ichi
AU - Tachibana, Kazuhiro
PY - 2012/2
Y1 - 2012/2
N2 - Polymerized ionic liquids (PILs) having guanidinium cations with different counter-anions, such as PF 6 - and N(CF 3SO 2) 2 - (TFSI -), were synthesized by copolymerization of a guanidinium ionic liquid monomer with methyl acrylate followed by an anion exchange reaction. Furthermore, incorporating a guanidinium ionic liquid, LiTFSI salt and nano-size SiO 2, a quaternary gel polymer electrolyte based on one of the PILs as the polymer host was prepared. The quaternary gel polymer electrolyte was chemically stable even at a higher temperature of 80 °C in contact with the lithium anode. In particular, the electrolyte exhibited high lithium ion conductivity, wide electrochemical stability window and good lithium stripping/plating performance. Li/LiFePO 4 batteries with the quaternary gel polymer electrolyte at 80 °C had capacities of 140 and 130 mA h g -1 respectively at 0.1 and 0.2 C current rates.
AB - Polymerized ionic liquids (PILs) having guanidinium cations with different counter-anions, such as PF 6 - and N(CF 3SO 2) 2 - (TFSI -), were synthesized by copolymerization of a guanidinium ionic liquid monomer with methyl acrylate followed by an anion exchange reaction. Furthermore, incorporating a guanidinium ionic liquid, LiTFSI salt and nano-size SiO 2, a quaternary gel polymer electrolyte based on one of the PILs as the polymer host was prepared. The quaternary gel polymer electrolyte was chemically stable even at a higher temperature of 80 °C in contact with the lithium anode. In particular, the electrolyte exhibited high lithium ion conductivity, wide electrochemical stability window and good lithium stripping/plating performance. Li/LiFePO 4 batteries with the quaternary gel polymer electrolyte at 80 °C had capacities of 140 and 130 mA h g -1 respectively at 0.1 and 0.2 C current rates.
KW - Guanidinium-based ionic liquids
KW - Ionic conductivity
KW - Lithium polymer batteries
KW - Polymerized ionic liquids
UR - https://www.scopus.com/pages/publications/84855444388
U2 - 10.1002/pi.3181
DO - 10.1002/pi.3181
M3 - 文章
AN - SCOPUS:84855444388
SN - 0959-8103
VL - 61
SP - 259
EP - 264
JO - Polymer International
JF - Polymer International
IS - 2
ER -