Institute for Ionics;Berlin/Heidelberg: Springer Berlin Heidelberg
摘要:
摘要： Organic–inorganic hybrid electrolytes based on the reaction of triblock copolymer poly(propylene glycol)- block -poly(ethylene glycol)- block -poly(propylene glycol) bis(2-aminopropyl ether) and 3-(triethoxysilyl)propyl isocyanate doped with lithium trifluoromethanesulfonate and Al 2 O 3 nanowires were synthesized by a sol–gel process. The structural and electrochemical properties of the materials thus obtained were systematically investigated by Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry, thermogravimetric analysis, powder X-ray diffraction, 29 Si CPMAS (cross-polarization magic angle spinning) NMR, alternate current impedance, and linear sweep voltammetry measurements. FTIR spectra showed the occurrence of complexation and interaction among the components. The maximum ionic conductivity values of 9.8 × 10 −5 S cm −1 and 6.8 × 10 −4 S cm −1 were obtained at 30 and 75 °C, respectively, for the solid hybrid electrolyte with a [O]/[Li] ratio of 16 and 1 wt% of Al 2 O 3 nanowires. A Vogel–Tamman–Fulcher-like temperature dependence of ionic conductivity was observed for the hybrid electrolytes doped with fillers. The electrochemical stability window of ~4.0 V makes the organic–inorganic hybrid electrolyte promising for lithium-ion battery application at low voltages. 其他題名： Ionics 出版者： Berlin/Heidelberg: Springer Berlin Heidelberg 出版日期： 2015-09-01 出處： Ionics, 2015-09, Vol.21 (9), p.2523-2534 版權： Springer-Verlag Berlin Heidelberg 2015 識別號： ISSN: 0947-7047 識別號： EISSN: 1862-0760 識別號： DOI: 10.1007/s11581-015-1425-z
