期刊论文

中文

电源技术

1002-087X

2017

41

7

971-974

10.3969/j.issn.1002-087X.2017.07.005

湖南省科技计划资助项目（2012KW3066）；

本校为第一机构

以季戊四醇和甲基丙烯酸为原料,制备具有多支链结构的不饱和羧酸酯,再与P(VDF-HFP)共混,经热聚合制备锂离子电池用凝胶聚合物电解质,用红外光谱、循环伏安、X射线衍射、交流阻抗等研究电解质的性质。结果表明,用该多支链羧酸酯制备聚合物电解质时,单体用量少,获得的凝胶粘性好,室温离子电导率为1.03 mS/cm,电化学稳定窗口达到5.2 V,以此制备的聚合物电池界面阻抗小,放电性能好。

Using pentaerythritol and methylacrylic acid as raw materials, an unsaturated carboxylic ether monomer with star-shaped structure was synthesized. By blending monomer with P (VDF-HFP) and in-situ thermal polymerization, gel polymer electrolytes and polymer Li-ion cells were prepared, and their properties were studied with FTIR, cyclic voltammogram, XRD and A.C impedance. The results show that this polymer electrolyte exhibits good stickiness and a small consumption of monomer. Its ionic conductivity at room temperature is 1.03 mS/cm, and electrochemical window reaches 5.2 V. The polymer Li-ion...