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Fabrication and Characterization of PEO/PPC Polymer Electrolyte for Lithium-Ion Battery

机译:锂离子电池用PEO / PPC聚合物电解质的制备与表征

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摘要

A new poly(propylene carbonate)/poly(ethylene oxide) (PEO/PPC) polymer electrolytes (PEs) have been developed by solution-casting technique using biodegradable PPC and PEO. The morphology, structure, and thermal properties of the PEO/PPC polymer electrolytes were investigated by scanning electron microscopy, X-ray diffraction, and differential scanning calorimetry methods. The ionic conductivity and the electrochemical stability window of the PEO/PPC polymer electrolytes were also measured. The results showed that the T-g, and the crystallinity of PEO decrease, and consequently, the ionic conductivity increases because of the addition of amorphous PPC. The PEO/50%PPC/10%LiClO4 polymer electrolyte possesses good properties such as 6.83 x 10(-5) S cm(-1) of ionic conductivity at room temperature and 4.5 V of the electrochemical stability window.
机译:通过使用可生物降解的PPC和PEO的溶液浇铸技术开发了一种新型的聚碳酸亚丙酯/聚环氧乙烷(PEO / PPC)聚合物电解质(PEs)。通过扫描电子显微镜,X射线衍射和差示扫描量热法研究了PEO / PPC聚合物电解质的形态,结构和热性能。还测量了PEO / PPC聚合物电解质的离子电导率和电化学稳定性窗口。结果表明,由于添加了无定形PPC,T-g和PEO的结晶度降低,因此离子电导率增加。 PEO / 50%PPC / 10%LiClO4聚合物电解质具有良好的性能,如室温下的离子电导率为6.83 x 10(-5)S cm(-1),电化学稳定性窗口为4.5V。

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