直封式工艺制备18650型LiFePO_4锂离子电池  

Preparation of 18650 type LiFePO_4 Li-ion battery by direct sealing process

作　　者：韦俊红[1,2] 李玉琦[1,2] 杨涛[2] 杨瑞[2] 

机构地区：[1]河南科技学院机电学院,河南新乡453007 [2]河南能驰电源有限公司,河南新乡453007

出　　处：《电池》2012年第3期156-157,共2页Battery Bimonthly

摘　　要：以LiFePO4和石墨为正、负极活性材料,用直接封口方式制备额定容量为1 300 mAh的18650型锂离子电池。存放30 d后,与半敞开式工艺相比,直封式工艺制备的电池电压提高0.15 V,荷电保持率提高13%,循环1 000次后的容量提高7%,表面无锈蚀。热误用、短路、过充电、强制放电、振动和机械冲击测试时,电池均不起火、不爆炸,撞击测试时不泄漏。18650 type Li-ion battery with nominal capacity of 1 300 mAh was prepared by direct scaling process using LiFePO, and graphite as cathode and anode active material, respectively. After 30 d storage, compared to scmi-opening process, the voltage of battery prepared by direct sealing process improved 0.15 V ,charge retention rate increased 13% ,the capacity increased 7% after 1 000 cycles, there was no rust-eaten on the surface. The battery was no fire and no explosion in tests of thermal misuse,short cir- cuit, overcharge, forced discharge, vibration and mechanical shock, it was no leakage in crash test.

关 键 词：锂离子电池 磷酸铁锂(LiFePO4) 封口工艺 制备 性能 

分 类 号：TM912.9[电气工程—电力电子与电力传动]