Electrochemical effect of coating layer on the separator based on PVdF and PE non-woven matrix
Electrochemical effect of coating layer on the separator based on PVdF and PE non-woven matrix
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DOI：
10.1016/j.jpowsour.2005.03.047
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发表时间：
2005-08
影响因子：
9.2
通讯作者：
Y. Lee;N. Choi;Je An Lee;Wan-Ho Seol;K. Cho;Ho‐Young Jung;Jun-Woo Kim;Jung-Ki Park
中科院分区：
文献类型：
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作者：
Y. Lee;N. Choi;Je An Lee;Wan-Ho Seol;K. Cho;Ho‐Young Jung;Jun-Woo Kim;Jung-Ki Park
通过在基于聚偏氟乙烯（PVdF）和聚乙烯（PE）非织造基质的新型隔膜的表面上涂覆聚乙酸乙烯酯（PVAc）来制备涂覆隔膜。在25°C下，涂层隔膜的离子电导率为1.1×10−3Scm− 1，略高于裸隔膜。涂覆的隔膜显示出更光滑的表面形态和更好的对电极的粘附性，从而其导致比裸隔膜更低的总电阻。在C/2倍率下，具有涂覆隔膜的单元电池的放电容量保持在理论容量的约84%，这比具有裸隔膜的单元电池的放电容量高得多。
The coated separator was prepared by coating poly(vinyl acetate) (PVAc) on the surface of the novel separator based on poly(vinylidene fluoride) (PVdF) and polyethylene (PE) non-woven matrix. The ionic conductivity of the coated separator was 1.1×10−3Scm−1at 25°C, a little higher than that of bare separator. The coated separator showed smoother surface morphology and better adhesion property toward electrodes, and thereby it resulted in lower total resistance than the bare separator. The discharge capacity of the unit cell with coated separator at C/2 rate was maintained at about 84% of the theoretical capacity, which is quite higher than that of the unit cell with the bare separator.