公开(公告)号：US5498495A

公开(公告)日：1996-03-12

申请号：US392217

申请日：1995-02-22

申请人： Yoshinori Takada ,  Mitsuhiro Marumoto ,  Kouzou Sasaki

发明人： Yoshinori Takada ,  Mitsuhiro Marumoto ,  Kouzou Sasaki

IPC分类号： C22C24/00 ,  H01M4/13 ,  H01M4/40

CPC分类号： H01M4/13 ,  C22C24/00 ,  H01M4/40

摘要： An alloy for a negative electrode of a lithium secondary battery, comprising an Li-Ag-Te type alloy having an atomic ratio of Li:Ag:Te=15-120:1-20:0.001-2, an alloy for a negative electrode of a lithium secondary battery, comprising an Li-Ag-Te-(M1-M2) type alloy having an atomic ratio of Li:Ag:Te:M1:M2=15-120:1-20:0.001-2:1-50:1-30 wherein M1 is a 3A-5A group metal and M2 is a transition metal other than Ag, and a lithium secondary battery comprising a negative electrode composed of the above-mentioned alloy. According to the present invention, a negative electrode, wherein the growth of dendrite is suppressed, charge-discharge capacity is high, energy density is high and degradation due to repetitive charge-discharge is less, can be obtained. By the use of the negative electrode obtained in the present invention, moreover, a lithium secondary battery superior in charge-discharge cycle life, which has high energy density permitting long-term use, high electromotive force and high charge-discharge capacity, can be produced.

摘要翻译： 一种锂二次电池的负极合金，其包含Li-Ag-Te型合金，其原子比为Li:Ag:Te = 15-120：1-20：0.001-2，负极合金 的锂二次电池，其包含原子比为Li:Ag:Te:M1:M2 = 15-120:120:0.1-2-2:1的Li-Ag-Te-（M1-M2）型合金 50：1-30其中M1是3A-5A族金属，M2是除Ag以外的过渡金属，以及包含由上述合金构成的负极的锂二次电池。 根据本发明，可以获得抑制枝晶生长的负极，充放电容量高，能量密度高，并且由于重复充放电而导致的劣化较小。 此外，通过使用本发明得到的负极，可以使具有能够长期使用的高能量密度，高电动势和高充放电能力的充放电循环寿命优异的锂二次电池 生产。