本研究以高分子、陶瓷材料為主體製備鋰離子電池的複合隔離膜分別探討高分子塗佈於PP (Polypropylene)隔離膜、陶瓷材料塗佈於PP隔離膜以及陶瓷複合隔離膜。為了改善純高分子隔離膜的缺陷，加入氧化鋁以及二氧化鈦以旋轉塗佈的方式製成陶瓷複合隔離膜塗佈於正極。
利用聚(N-乙烯甲醯胺) (Poly(N-vinylformamide), PNVF)塗佈於PP隔離膜，發現阻抗比PP隔離膜低使循環壽命上有明顯的差異。此外能減緩鋰枝晶刺破隔離膜的時間。PNVF的醯胺官能基推測有助於減少LiF的產生。
陶瓷塗佈於PP隔離膜比電容量略低於PP隔離膜，其原因與氧化鋁與鋰產生副反應。可以發現陶瓷層面向鋰金屬的阻抗小於面向正極，主要是因為接觸面的緣故，導致陶瓷層面向正極阻抗較大。此外陶瓷層塗佈有效阻隔了鋰枝晶的生長，避免刺破隔離膜。
由熱穩定測試中可知，在150 ֯C下陶瓷複合膜仍可保有原來的樣貌並未受到加熱收縮或燃燒。為瞭解決陶瓷隔離膜漏電的窘境，加入奈米等級的二氧化鈦以及隔離膜厚度的調整。組裝成電池後，整體比量容量與商用PP隔離膜相比，略小一點，其原因與陶瓷塗佈相同。在短路測試中，發現能更有效的避免鋰枝晶所造成的短路問題。

The composite separators are made of Poly(N-vinylformamide)(PNVF) and ceramic for Li-ion batteries to be investigated influences on physical properties, electrochemical performance and safety. EIS analysis shows that impedance of PNVF-coated separator is small than Polypropylene (PP) separator and result in longer cycle life. On galvanostatic cycling voltage profiles, PNVF strengthens PP separator to slow down dendrite formation. On second section, the specific capacity of Al2O3 and TiO2 spin coating on Separator is lower than PP separator because Al2O3 reacts with Li. Due to contact with a ceramic layer, facing Li anode shows better performances than LFP cathode in general. On Final section, Preparing the composite separators need to be noted factors of pore size and thickness or it happens micro short-circuit. And it also doesn’t melt and flame at 150 ֯C to lead to prevent batteries from thermal runaway. Furthermore, dendrite cannot go through composite ceramic separators more than 1400 hours like ceramic-coated separators shown galvanostatic cycling voltage profiles.

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