Studies on the Ion Conductive Performance of Composite Polymer Electrolyte Containing Nano-scale SiO_2

Authors

Lin YE, School of Materials Science & Engineering,Beijing Institute of Technology,Beijing 100081,China,;
Yu-mei ZHAO, School of Materials Science & Engineering,Beijing Institute of Technology,Beijing 100081,China,;
Xiao-wen ZHANG, School of Materials Science & Engineering,Beijing Institute of Technology,Beijing 100081,China,;
Zeng-guo FENG, School of Materials Science & Engineering,Beijing Institute of Technology,Beijing 100081,China,;
Ying BAI, School of Chemical Engineering & Environment, Beijing Institute of Technology,Beijing 100081,China,;Laboratory of National Development Center of Hi-Tech Green Materials,Beijing 100081,China;
Feng WU, School of Chemical Engineering & Environment, Beijing Institute of Technology,Beijing 100081,China,;Laboratory of National Development Center of Hi-Tech Green Materials,Beijing 100081,China;

Corresponding Author

Zeng-guo FENG

Abstract

Nano-silicon oxide was doped into a novel comblike polyether,poly(3-(methoxy(triethylenoxy))methyl-3'-methyloxetane) to prepare a series of composite polymer electrolyte.The ion conductivity measurement revealed that the composite polymer electrolyte added with 5% weight fraction of SiO2 has the highest ion conductivity of 7.8×10-5 S/cm at 30℃ and 4.5×10-4 S/cm at 80℃,which is increased 30%~60% as compared to the polymer electrolyte without adding any SiO2.DSC results implied that the nano-silicon oxide inserts into the macromolecule chains to increase the free volume and decrease the glass transition temperature to enhance the ion conductivity.In addition,it seems that the crystallization occurred due to the hydrogen bonds between hydroxyl group on the surface of silicon oxide and oxygen atoms on the polymer chains.And XRD spectrum demonstrated the existence of micro-crystals.The heat decomposition temperature was detected by TGA,indicating the good heat stability of this composite polymer electrolyte.

Keywords

nano SiO2, polymer electrolyte, ion conductivity, glass transition temperature, crystallization

DOI Link

https://doi.org/10.61558/2993-074X.1775

Publication Date

2007-02-28

Online Available Date

2007-02-28

Revised Date

2007-02-28

Received Date

2007-02-28

Recommended Citation

Lin YE, Yu-mei ZHAO, Xiao-wen ZHANG, Zeng-guo FENG, Ying BAI, Feng WU. Studies on the Ion Conductive Performance of Composite Polymer Electrolyte Containing Nano-scale SiO_2[J]. Journal of Electrochemistry, 2007 , 13(1): 19-24.
DOI: 10.61558/2993-074X.1775
Available at: https://jelectrochem.xmu.edu.cn/journal/vol13/iss1/4