Preparation and Characterization of Composite Polymer Electrolytes Containing Surface-modified Nano Silica

doi:10.3969/j.issn.0251-0790.2012.06.029

Abstract

Abstract: Nano silica with carbonate groups were synthesized by the esterification reaction and the structure of the modified nano silica were characterized by FTIR and TGA methods. The composite polymer electrolytes(CPEs) were prepared by introducing the modified nano silica. The thermal and electrochemical performances of the CPEs were studied by DSC and AC impedance. The results show that the addition of modified nano silica enhance the thermal properties and ionic conductivities of CPEs, and meanwhile the lithium ion transference number of CPEs increase up to 0.49. AC impedance results reveal that modified nano silica can also improve the interfacial stability between CPEs and lithium metal electrode.

Key words: Modified nano silica, Composite polymer electrolyte, Electrochemical property

CLC Number:

O646

TrendMD:

GU Ning-Yu, AO He, PEI Jian-Jun. Preparation and Characterization of Composite Polymer Electrolytes Containing Surface-modified Nano Silica[J]. Chem. J. Chinese Universities, 2012, 33(06): 1295.

References

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