Li/S电池凝胶聚合物电解质的研究  

Study on gel polymer electrolytes for Li/S battery

作　　者：马萍[1] 徐宇虹[1] 张宝宏[1] 殷金玲[1] 孟祥利[1] 

机构地区：[1]哈尔滨工程大学材料科学与化学工程学院,黑龙江哈尔滨150001

出　　处：《电池》2006年第6期426-428,共3页Battery Bimonthly

摘　　要：通过溶液浇注和电解液吸收的方法,制备了PVDF-PEO类凝胶聚合物电解质膜,该膜有良好的透明性和柔韧性。PVDF-PEO凝胶聚合物电解质[n(PEO):n(PVDF)=0.5]在室温下的电导率最高可达7.03 mS/cm,吸液率达76.1%,电化学稳定窗口达4.1 V。将该电解质[n(PEO)∶n(PVDF)]应用在Li/S电池上,经过15次充放电循环后,电池的放电比容量仍在400 mAh/g以上。PVDF-PEO type gel polymer electrolyte films, which had excellent transparency and flexibility, were prepared by solution casting and electrolyte absorption methods. The highest conductivity of PVDF-PEO gel polymer electrolyte [ n （PEO） ： n （PVDF） = 0.5 ] was 7.03 mS/cm at room temperature. T he liquid absorption rate was 76.1%, an electrochemieal stability window was up to 4.1 V. The discharge specific capacity of Li/S battery with the electrolyte [ n（PEO） ： n（PVDF） = 0.5]was above 400 mAh/g after 15 charge-discharge cycles.

关 键 词：凝胶聚合物电解质 PVDF PEO LI/S电池 

分 类 号：TM912[电气工程—电力电子与电力传动]