公开(公告)号：US20050271943A1

公开(公告)日：2005-12-08

申请号：US11091072

申请日：2005-03-28

申请人： Hey Park ,  Ji-Sang Yu ,  Sung-Woo Kim ,  Min Kim

发明人： Hey Park ,  Ji-Sang Yu ,  Sung-Woo Kim ,  Min Kim

IPC分类号： H01M4/505 ,  C01G45/00 ,  C01G45/12 ,  C01G49/00 ,  C01G51/00 ,  C01G53/00 ,  C01G53/04 ,  H01M4/36 ,  H01M10/052 ,  H01M4/50 ,  H01M4/52

CPC分类号： H01M4/505 ,  C01G45/1242 ,  C01G49/009 ,  C01G51/54 ,  C01G53/50 ,  C01G53/54 ,  C01P2002/32 ,  C01P2002/52 ,  C01P2006/40 ,  H01M4/131 ,  H01M4/364 ,  H01M4/485 ,  H01M4/525

摘要： The present invention provides a non-aqueous electrolyte-based high power lithium secondary battery having a long-term service life and superior safety at both room temperature and high temperature, even after repeated high-current charging and discharging, wherein the battery comprises a mixture of a particular lithium manganese-metal composite oxide (A) having a spinel structure and a particular lithium nickel-manganese-cobalt composite oxide (B) having a layered structure, as a cathode active material.

摘要翻译： 本发明提供一种即使经过重复的高电流充放电后，其长期使用寿命和室温和高温下的安全性也非常优异的非水电解质型高功率锂二次电池，其中电池包含混合物 具有尖晶石结构的特定锂锰金属复合氧化物（A）和具有层状结构的特定锂镍锰钴复合氧化物（B）作为阴极活性材料。

公开(公告)号：US20060251956A1

公开(公告)日：2006-11-09

申请号：US11406656

申请日：2006-04-19

申请人： Bo Kim ,  Kwangho Yoo ,  Hyunwoo Park ,  Hey Park ,  Jisang Yu

发明人： Bo Kim ,  Kwangho Yoo ,  Hyunwoo Park ,  Hey Park ,  Jisang Yu

IPC分类号： H01M10/50 ,  H01M4/62

CPC分类号： H01M4/62 ,  H01M10/052 ,  H01M10/0567 ,  H01M10/4235

摘要： Disclosed is a lithium secondary battery comprising an electrode assembly composed of a cathode, an anode and a separator, and a lithium electrolyte, wherein the electrodes and/or electrolyte include a compound (“urethane compound”) and/or polymer (“poly urethane”) which are decomposed upon overcharge of the battery and contain a urethane group in a molecular structure thereof. The lithium secondary battery of the present invention is characterized by addition of a compound or polymer having a urethane group to electrodes and/or electrolyte, wherein the thus-added compound and/or polymer have substantially no adverse effects on general performance of the battery under normal operating conditions and are decomposed with high reliability upon overcharge of the battery, thereby offering time delay effects for securing battery safety, and the decomposition products thereof result in sharply increased internal resistance of the battery, thereby increasing battery safety.