材料期刊网

锂离子蓄电池是20世纪90年代初发展起来的先进蓄电池，它具有比能量大、电压高、寿命长、无污染及无记忆效应等特点。几年来，从电极活性物质、电极制作工艺、电液、隔膜、卷绕工艺、焊接工艺及安全性等方面对50 Ah圆柱形锂离子蓄电池进行大量的研究。现电池额定容量为50Ah，比能量达147Wh/kg以上，放电特性、短路、过充和针刺以及荷电保持能力、循环寿命及贮存性能有明显的改善。这种大容量锂离子蓄电池目前主要作为水下兵器用电源，将来也可以用在电动汽车和航天等领域，是一种很有发展前景的先进电源。

The lithium ion battery is the advanced battery developed at the beginning of 1990’s, it has high energy,high voltage,long life span ,free from pollution and has no memory effect. In the last years, extensive research on the 50 Ah cylinder lithium ion battery, including the electrode material,the electrode manufacturing process, electrolyte,diaphragm, coiling,welding and safety has been carried on .The developed capacity of battery is of 50 Ah, its specific energy exceed 147 Wh/kg, its discharging,short circuit,overcharging, pin pricking,electric charge storage, cycling life, energy storage are greatly improved.This kind of high capacity lithium ion battery are mainly used for a power of an underwater weapon . It will also be used in the field such as electric automobile and aerospace. It is a kind of promising battery.