Study on TiO2 modified PVDF lithium ion battery separator
Li Lin1,2, Chen Jian1,2, Gong Yong1,2, Liu Ping1,2, Dai Zuyang1,2, Gu Qilong1,2
1.College of Materials Science and Engineering,Sichuan University of Science & Engineering,Zigong 643000; 2.Sichuan Province Key Laboratory for Corrosion and Protection of Material,Sichuan University of Science & Engineering,Zigong 643000;
Abstract: The electrochemical properties of PVDF lithium ion battery separators prepared by electrospinning were general,but it can be enhanced by blending.TiO2/PVDF separator was prepared by blending titanium dioxide (TiO2) with PVDF.The effects of different TiO2 addition on the performance of TiO2/PVDF and its mechanical properties,ionic conductivity,discharge capacity and cycle performance were also investigated.The results showed that when added TiO2 of 1.5wt%(wt,mass fraction),the porosity of TiO2/PVDF reached 52.54%,the electrolyte uptake reached 403.70%,and the ion conductivity reached 4.2×10-4S/cm.The discharge capacity was 134.0mAh/g at the rate of 0.5C,the discharge still remained 130mAh/g after 25 cycles,the fluctuation of discharge capacity was small,and the cycle stability was good.
李琳, 陈建, 龚勇, 刘平, 代祖洋, 辜其隆. TiO2改性PVDF锂离子电池隔膜的研究[J]. 化工新型材料, 2018, 46(12): 133-136.
Li Lin, Chen Jian, Gong Yong, Liu Ping, Dai Zuyang, Gu Qilong. Study on TiO2 modified PVDF lithium ion battery separator. New Chemical Materials, 2018, 46(12): 133-136.
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