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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Thermally stable hyperbranched polyether-based polymer electrolyte for lithium-ion batteries
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Thermally stable hyperbranched polyether-based polymer electrolyte for lithium-ion batteries

机译：锂离子电池的热稳定超支化聚醚类聚合物电解质

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摘要

A thermally stable polymer matrix, comprising hyperbranched polyether PHEMO (poly(3-{2-[2-(2-hydroxyethoxy)ethoxy]ethoxy}methyl-3'-methyloxetane)) and PVDF-HFP (poly(vinylidene fluoride-hexafluoropropylene)), has been successfully prepared for applications in lithium-ion batteries. This type of polymer electrolyte has been made by adding different amounts of lithium bis(oxalate)borate (LiBOB) to the polymer matrix. Its thermal and structural properties were measured using differential scanning calorimetry and x-ray diffraction. Experimental results show that the polymer electrolyte system possesses good thermal stability, with a decomposition temperature above 420 degrees C. The ionic conductivity of the polymer electrolyte system is dependent on the lithium salt content, reaching a maximum of 1.1 x 10(-5) S cm(-1) at 30 degrees C and 2.3 x 10(-4) S cm(-1) at 80 degrees C when doped with 10 wt% LiBOB.
机译：一种热稳定的聚合物基体，包含超支化聚醚PHEMO（聚（3- {2- [2-（2-羟基乙氧基）乙氧基]乙氧基}甲基-3'-甲基氧杂环丁烷））和PVDF-HFP（聚偏二氟乙烯-六氟丙烯） ），已经成功地准备好用于锂离子电池。这种类型的聚合物电解质是通过向聚合物基质中添加不同量的双（草酸）硼酸锂（LiBOB）制成的。使用差示扫描量热法和X射线衍射测量其热和结构性质。实验结果表明，该聚合物电解质体系具有良好的热稳定性，分解温度高于420摄氏度。该聚合物电解质体系的离子电导率取决于锂盐含量，最高可达1.1 x 10（-5）S掺杂10 wt％LiBOB时在30摄氏度时的cm（-1）和在80摄氏度时的2.3 x 10（-4）S cm（-1）。

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