The development of a magnesium ion conducting electrolyte is essential for designing rechargeable magnesium batteries. Herein, we report magnesium-ion conducting polymer electrolytes (PE) based on polyvinylidene fluoride (PVDF) and tetraethylene glycol dimethyl ether (TEGDME) with magnesium bromide salt processed by solution casting method. Fourier-transform infrared spectroscopy (FTIR) shows a composite between the polymer and the MgBr 2 salt forms. X-ray diffraction (XRD) data reveals that the broad reflections of the PVDF polymer are reduced with the addition of TEGDME and MgBr 2 , with scanning electron microscopy (SEM) illustrating changes in the morphology. The ionic conductivity and the relaxation time are found to be 1.2 × 10 −6 S cm −1 and 5.7 × 10 −5 s −1 at room temperature, respectively. This polymer electrolyte exhibits initial cycles with low overpotential, reversible Mg plating/stripping, and an excellent ...

中文翻译：

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镁电池用聚偏二氟乙烯/溴化镁聚合物电解质的合成与表征

镁离子导电电解质的开发对于设计可充电镁电池至关重要。在此，我们报道了通过溶液流延法加工的溴化镁盐，基于聚偏二氟乙烯（PVDF）和四甘醇二甲醚（TEGDME）的镁离子导电聚合物电解质（PE）。傅里叶变换红外光谱（FTIR）显示了聚合物与MgBr 2盐形式之间的复合物。X射线衍射（XRD）数据表明，通过添加TEGDME和MgBr 2可以减少PVDF聚合物的宽反射，而扫描电子显微镜（SEM）可以说明形态的变化。发现离子电导率和弛豫时间为1.2  ×  10 -6 S cm -1和5.7  × 在室温下分别为10 -5 s -1。这种聚合物电解质的初始循环具有较低的超电势，可逆的Mg镀层/剥离，并且具有出色的...