期刊论文

Hu, Y.-J.

中文

功能材料

1001-9731

2006

37

9

1401-1403+1407

10.3321/j.issn:1001-9731.2006.09.015

国家高技术研究发展计划（863计划）资助项目（2003AA32X010）；

本校为其他机构

以N,N-二甲基-甲酰胺(DMF)为溶剂, 采用直接挥发法制备无纺布增强型聚偏氟乙烯-六氟丙烯(PVDF-HFP)聚合物电解质, 并以锂为负极制备了聚合物电池.用扫描电子显微镜、交流阻抗和循环伏安对所制聚合物膜性能进行了表征,用充放电实验对所制聚合物电池电化学性能进行了测试.实验结果表明,直接挥发法制得的聚合物膜孔穴丰富,微孔呈蜂窝状,吸液率为280%,电化学稳定窗口为4.5V,浸取电解液后室温离子电导率为1.5mS/cm;以LiCoO2为正极制得的聚合物电池0.1C充放电, 放电平台为3.9V左右, 首次放电容量为137.5mAh/g,20次循环后容量保持在134mAh/g以上,充放电库仑效率高于95%,0.5C放电时放电平台为3.7V,0.5和...

A polymer electrolyte based on poly (vinylidene) fluoride-hexafluoropropylene (PVDF-HFP) was prepared by evaporation solvent of dimethyl formamide (DMF), and the polymer electrolyte was reinforced by non-woven fabrics. Lithium-ion polymer batteries were assembled by using LiCoO2 as cathode material. The polymer membrane's morphologies and its electrochemical properties were studied by scanning electron microscopy, ac impedance and cyclic voltammetry test. Experimental results show that: this polymer membrane has rich microporous and exhibits 280% uptake of electrolyte solution. The electrochem...