摘要
通过添加不同质量分数的TiO2纳米粒子制备多孔聚合物电解质膜PVDF-HFP,制备的聚合物电解质膜通过红外,交流阻抗,线性伏安扫描、首次充放电测试等方法进行了性能测试。添加TiO2纳米填料后,降低了聚合物链的结晶度和极性,当填料的质量分数为8%时,表现出较好的电化学性能,吸液率为184%,孔隙率为93%,室温电导率达到2.05×10-3 S/cm,电化学稳定窗口为4.7V,能满足要求。
Various amounts of nanoscale rutile T iO2 particle were used as fillers in the preparation of poly（vinylidenefluoride hexafluoropropylene） （PVDF-HFP） based porous polymer electrolytes. The structure was investigated through FT-IR, the ionic conductivity was determined by AC impedance method,the electrochemical stability was measured by linear scan vohammetry experiment, and the charge-discharge of the polymer lithium batteries based on this composite gel polymer electrolyte was investigated. The polarity of CF2 groups in the polymer chains and the crystallinily of the polymer e- lectrolytes decreased after the addition of TiO2 nanoparticles. When the composite polymer film con- tained 8 % of TiO2 nanoparticles, the polymer electrolytes exhibited excellent physico-ehemical proper- ties and electrochemical properties such as liquid uptake of 184%, porosity of 93%, high ionic conduc- tivity, up to 2.05 X 10 -3 S/cm at room temperature, and electrochemical window of 4.7 V. It is suitable for practical use.
出处
《化工科技》
CAS
2012年第5期9-13,共5页
Science & Technology in Chemical Industry
基金
辽宁省教育厅科技攻关项目(L2011057)
