Properties of a gel polymer electrolyte based on lithium salt with poly(vinyl butyral)
Poly(vinyl butyral) (PVB) is of particular interest because of its low cost, extremely wide temperature work range (− 20 to 120 °C), and efficient chemical stability. In this study, a gel polymer electrolyte (GPE) containing Li+ ions was fabricated by using dimethylacetylamine (DMA), lithium perchlorate (LiClO4), and PVB. The experimental results indicated that a highly transparent GPE with a high ionic conductivity (σ) could be obtained by mixing glue (DMA with a PVB content of 10 wt%) with a LiClO4 content of 6 wt%. It was found that the ionic conductivity (σ) of the GPE depended on the LiClO4 content, and the GPE with a LiClO4 content of 6 wt% exhibited a maximum σ of 7.73 mS cm−1, a viscosity coefficient of 3360 mPa s, and a transmittance greater than 89% (visible region) at room temperature. Furthermore, PVB improved the electrolyte solution leakage, and the LiClO4 was used as an ion supply source for the high σ of the GPE.
KeywordsPoly(vinyl butyral) Lithium perchlorate Ionic conductivity Gel polymer electrolyte Transmittance
This study was supported by the Ministry of Science and Technology of the Republic of China, Taiwan, under contract number MOST 104-2221-E-230-008. We acknowledge Wallace Academic Editing for editing this manuscript.
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