Studies on solid-state polymer composite electrolyte of nano-silica/hyperbranched poly(amine-ester)
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- 作者：Xianlei Hu ; Gaoming Hou ; Mingqiu Zhang…
- 刊名：Journal of Solid State Electrochemistry
- 出版年：2016
- 出版时间：July 2016
- 年：2016
- 卷：20
- 期：7
- 页码：1845-1854
- 全文大小：1,729 KB
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Chemistry
Physical Chemistry
Analytical Chemistry
Industrial Chemistry and Chemical Engineering
Characterization and Evaluation Materials
Condensed Matter
Electronic and Computer Engineering - 出版者：Springer Berlin / Heidelberg
- ISSN：1433-0768
- 卷排序：20
文摘
A new solid-state polymer composite electrolyte based on hypergrafted nano-silica (SiO2-g-HBPAE)/hyperbranched poly (amine-ester) (HBPAE) doped with lithium perchlorate (LiClO4) was studied in this paper. The N,N-diethylol-3-amine-2-methyl methylpropionate monomer was firstly synthesized by methyl methacrylate (MMA) and diethanolamine through Michael addition reaction and then self-condensed on the surface of nano-silica pretreated by 3-aminopropyltriethoxysilane (APTES) and MMA. The synthetic procedure of the monomers and SiO2-g-HBPAE/HBPAE was traced by fluorescence spectra. The size and grafting ratio of SiO2-g-HBPAE were characterized by transmission electron microscopy, static light scattering and thermogravimetric analysis. Incorporating SiO2-g-HBPAE to HBPAE could not only decrease the glass transition temperature of polymer according to the differential scanning calorimetry characterization, but also increase the elastic and viscosity modules indicated by rheological measurement results. Electrochemical properties of SiO2-g-HBPAE/HBPAE/LiClO4 were also investigated. The conductivity of SiO2-g-HBPAE/HBPAE with 50 wt% LiClO4 reached 1.4 × 10−5 S/cm at 30 °C and 10−3 S/cm at 100 °C. The lithium-ion transference number of synthesized hyperbranched electrolyte can be up to 0.55.KeywordsHyperbranched poly (amine-ester)Hypergrafted nano-silicaPolymer composite electrolyteConductivityLithium battery