隨著電子產品需求的增加，對儲能的需求也在增加。鋰離子電池是已經商業化的儲能裝置之一。商用鋰離子電池有幾個缺點，其中之一是安全問題，因為商用鋰離子電池使用的液體電解質使用的有機溶劑易燃、易爆且易於洩漏電解質。因此，在這項工作中，使用固體聚合物電解質 (SPE) 來減少這些缺點，合成了一種由 PVDF 和 CN-PVA-SO3 的混合物製成的 SPE。製備了PVDF和CN-PVA-SO3不同質量比的SPE，此外還製備了添加液體添加劑和固體添加劑的SPE。這些 SPE 的特點是傅里葉變換紅外光譜 (FTIR)、和拉伸強度。 PVDF與CN-PVA-SO3的最佳質量比為9:1，室溫下離子電導率為2.79 x 10-4 S/cm，離子遷移數為0.18，在極化500次循環時穩定。然後將此SPE應用於鈕扣電池，初始放電容量為155.98 mAh/g，庫侖效率~99%，循環129次後容量保持率為70.34%。

With the increasing demand for electronic goods, the need for energy storage is also increasing. The lithium-ion battery is one of the energy storage devices that has been commercialized. Commercial lithium-ion batteries have several drawbacks, one of which is safety concerns because commercial lithium-ion batteries use a liquid electrolyte that uses organic solvents that are flammable, explosive, and easy to leak electrolyte. So, in this work, a solid polymer electrolyte (SPE) was used to reduce these drawbacks, an SPE made of a mixture of PVDF and CN-PVA-SO3 was synthesized. SPEs with different mass ratios between PVDF and CN-PVA-SO3 have been made, in addition, SPEs with the addition of liquid additives and solid additives have also been made. Those SPEs were characterized by Fourier Transform Infrared Spectroscopy (FTIR) and Tensile strength. The optimal mass ratio between PVDF and CN-PVA-SO3 is 9:1 with the ionic conductivity of 2.79 x 10-4 S/cm at room temperature, ion transference number of 0.18, and stable during polarization up to 500 cycles. Then this SPE is applied to the coin cell, the initial discharge capacity of 155.98 mAh/g with coulombic efficiency ~99%, and the capacity retention after 129 cycles become 70.34%.

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