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Synthesis, characterization, and ionic conductivity of electrospun organic–inorganic hybrid gel electrolytes
Polymer Engineering and Science ( IF 3.2 ) Pub Date : 2019-12-31 , DOI: 10.1002/pen.25320
Emre Aytan 1, 2 , Mustafa H. Uğur 1 , Nilhan Kayaman‐Apohan 1
Affiliation  

In this work, we described the synthesis of organic–inorganic hybrid gel electrolytes combining electrospinning, sol–gel, and ultraviolet (UV) curing techniques in order to investigate their ionic conductivity properties. First, 3‐glycidyloxypropyl trimethoxysilane modified polyamic acid and alkoxysilane functional poly(dimethyl siloxane) were electrospun together. Then, the following thermal imidization, the obtained fiber was cured in the UV curable gel formulation. To improve the interaction between fiber and gel matrix, 3‐(trimethoxysilyl)propyl methacrylate was partly hydrolyzed and then used as a bifunctional crosslinker. Finally, the membrane was soaked into 0.5 M LiFP6 salt solution to obtain organic–inorganic hybrid gel electrolytes. The chemical structure, ionic conductivity, and range of electrochemical stability window of the photocured nanocomposite electrolytes were investigated by using FTIR, thermogravimetric analysis, differential scanning calorimetry, electrochemical impedance spectroscopy, linear sweep voltammetry, and SEM analysis. The acquired results from experiments indicate that a convenient nanocomposite electrolyte for lithium‐ion batteries with high electrolyte (Li salt) uptake, adequate conductivity (1.02 × 10−3 S cm−1) at ambient temperature and electrochemically stable between 1 and 6 V had been prepared. POLYM. ENG. SCI., 60:619–629, 2020. © 2019 Society of Plastics Engineers

中文翻译:

电纺有机-无机杂化凝胶电解质的合成,表征和离子电导率

在这项工作中,我们描述了结合电纺,溶胶-凝胶和紫外线(UV)固化技术的有机-无机杂化凝胶电解质的合成方法,以研究其离子传导性。首先,将3-环氧丙氧基丙基三甲氧基硅烷改性的聚酰胺酸和烷氧基硅烷官能化的聚(二甲基硅氧烷)一起电纺丝。然后,在随后的热酰亚胺化中,将所得纤维在UV可固化凝胶制剂中固化。为了改善纤维与凝胶基质之间的相互作用,甲基丙烯酸3-(三甲氧基甲硅烷基)丙酯被部分水解,然后用作双功能交联剂。最后,将膜浸入0.5 M LiFP 6中盐溶液以获得有机-无机杂化凝胶电解质。通过FTIR,热重分析,差示扫描量热法,电化学阻抗谱,线性扫描伏安法和SEM分析,研究了光固化纳米复合电解质的化学结构,离子电导率和电化学稳定性窗口范围。从实验中获得的结果表明,用于锂离子电池的便捷纳米复合电解质具有较高的电解质(锂盐)吸收率,在环境温度下具有足够的电导率(1.02×10 -3 S cm -1)和1至6 V之间的电化学稳定性准备好了。POLYM。ENG。SCI。,60:619–629,2020.©2019塑料工程师协会
更新日期:2019-12-31
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