公开(公告)号：US07217477B2

公开(公告)日：2007-05-15

申请号：US10312674

申请日：2002-05-22

申请人： Hong-Kyu Park ,  Jeh-Won Choi ,  Yeon-Hee Lee ,  Young-Tack An ,  Hyeong-Jin Kim

发明人： Hong-Kyu Park ,  Jeh-Won Choi ,  Yeon-Hee Lee ,  Young-Tack An ,  Hyeong-Jin Kim

IPC分类号： H01M6/18 ,  H01M6/16

CPC分类号： H01M10/0567 ,  H01M4/525 ,  H01M4/587 ,  H01M6/10 ,  H01M10/0525 ,  H01M10/4235 ,  H01M2300/002 ,  H01M2300/0037

摘要： The present invention relates to a non-aqueous electrolyte additive for improving safety and a lithium secondary battery comprising the same, and more particularly to a non-aqueous electrolyte additive that can improve cycle life and safety properties of a lithium ion secondary battery.According to the present invention, an organometallic compound represented by the Chemical Formula 1 is added to a non-aqueous electrolyte of a battery as an additive, and thus if a battery voltage is out of normal operation voltage range due to a short circuit and overcharge of a battery, etc., the non-aqueous electrolyte additive decomposes and a part of the decomposed additive polymerizes to form an insulating film on a cathode surface, and a part of the metal reacts with an insulating film formed on a cathode surface to improve thermal stability of the battery, thereby improving safety of the battery. Furthermore, in case of a short circuit a part of the metal oxide of the additive is removed an activity of lithium or is reduced movement speed of lithium by reacting with lithium rushed from an anode to a cathode, and thus safety of the battery can be obtained on a short circuit by delaying a flow of current.

摘要翻译： 本发明涉及一种用于提高安全性的非水电解质添加剂和包含该非水电解质添加剂的锂二次电池，更具体地说涉及一种能够改善锂离子二次电池的循环寿命和安全性能的非水电解质添加剂。 根据本发明，将由化学式1表示的有机金属化合物作为添加剂添加到电池的非水电解质中，因此如果电池电压由于短路和过充电而超出正常工作电压范围 的电池等，非水电解质添加剂分解，一部分分解添加剂聚合，在阴极表面形成绝缘膜，一部分金属与阴极表面形成的绝缘膜反应，从而提高 电池的热稳定性，从而提高电池的安全性。 此外，在短路的情况下，添加剂的金属氧化物的一部分除去锂的活性或通过与从阳极冲出的阴极反应的锂的移动速度降低，因此电池的安全性可以是 通过延迟电流来在短路上获得。

公开(公告)号：US20070134557A1

公开(公告)日：2007-06-14

申请号：US11651463

申请日：2007-01-10

申请人： Hong-Kyu Park ,  Jeh-Won Choi ,  Yeon-Hee Lee ,  Young-Tack An ,  Hyeong-Jin Kim

发明人： Hong-Kyu Park ,  Jeh-Won Choi ,  Yeon-Hee Lee ,  Young-Tack An ,  Hyeong-Jin Kim

IPC分类号： H01M10/40 ,  C07C33/34

CPC分类号： H01M10/4235 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0567 ,  H01M2300/0025

摘要： The present invention relates to a non-aqueous electrolyte additive for improving safety and a lithium secondary battery comprising the same, and more particularly to a non-aqueous electrolyte additive that can improve cycle life and safety properties of a lithium ion secondary battery. According to the present invention, an organometallic compound represented by the Chemical Formula 1 is added to a non-aqueous electrolyte of a battery as an additive, and thus if a battery voltage is out of normal operation voltage range due to a short circuit and overcharge of a battery, etc., the non-aqueous electrolyte additive decomposes and a part of the decomposed additive polymerizes to form an insulating film on a cathode surface, and a part of the metal reacts with an insulating film formed on a cathode surface to improve thermal stability of the battery, thereby improving safety of the battery.

摘要翻译： 本发明涉及一种用于提高安全性的非水电解质添加剂和包含该非水电解质添加剂的锂二次电池，更具体地说涉及一种能够改善锂离子二次电池的循环寿命和安全性能的非水电解质添加剂。 根据本发明，将由化学式1表示的有机金属化合物作为添加剂添加到电池的非水电解质中，因此如果由于短路和过充电而导致电池电压超出正常工作电压范围 的电池等，非水电解质添加剂分解，一部分分解添加剂聚合，在阴极表面形成绝缘膜，一部分金属与阴极表面形成的绝缘膜反应，从而提高 电池的热稳定性，从而提高电池的安全性。

公开(公告)号：US07901813B2

公开(公告)日：2011-03-08

申请号：US11651463

申请日：2007-01-10

申请人： Hong-Kyu Park ,  Jeh-Won Choi ,  Yeon-Hee Lee ,  Young-Tack An ,  Hyeong-Jin Kim

发明人： Hong-Kyu Park ,  Jeh-Won Choi ,  Yeon-Hee Lee ,  Young-Tack An ,  Hyeong-Jin Kim

IPC分类号： H01M6/16 ,  C07C33/34 ,  C07C35/00

CPC分类号： H01M10/4235 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0567 ,  H01M2300/0025

摘要： The present invention relates to a non-aqueous electrolyte additive for improving safety and a lithium secondary battery comprising the same, and more particularly to a non-aqueous electrolyte additive that can improve cycle life and safety properties of a lithium ion secondary battery. According to the present invention, an organometallic compound represented by the Chemical Formula 1 is added to a non-aqueous electrolyte of a battery as an additive, and thus if a battery voltage is out of normal operation voltage range due to a short circuit and overcharge of a battery, etc., the non-aqueous electrolyte additive decomposes and a part of the decomposed additive polymerizes to form an insulating film on a cathode surface, and a part of the metal reacts with an insulating film formed on a cathode surface to improve thermal stability of the battery, thereby improving safety of the battery.

摘要翻译： 本发明涉及一种用于提高安全性的非水电解质添加剂和包含该非水电解质添加剂的锂二次电池，更具体地说涉及一种能够改善锂离子二次电池的循环寿命和安全性能的非水电解质添加剂。 根据本发明，将由化学式1表示的有机金属化合物作为添加剂添加到电池的非水电解质中，因此如果由于短路和过充电而导致电池电压超出正常工作电压范围 的电池等，非水电解质添加剂分解，一部分分解添加剂聚合，在阴极表面形成绝缘膜，一部分金属与阴极表面形成的绝缘膜反应，从而提高 电池的热稳定性，从而提高电池的安全性。

公开(公告)号：US07217479B2

公开(公告)日：2007-05-15

申请号：US10312672

申请日：2002-05-22

申请人： Hong-Kyu Park ,  Jeh-Won Choi ,  Yeon-Hee Lee ,  Young-Tack An ,  Hyeong-Jin Kim

发明人： Hong-Kyu Park ,  Jeh-Won Choi ,  Yeon-Hee Lee ,  Young-Tack An ,  Hyeong-Jin Kim

IPC分类号： H01M6/18 ,  H01M6/16

CPC分类号： H01M10/4235 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0567 ,  H01M2300/0025

摘要： The present invention relates to a non-aqueous electrolyte additive for improving safety and a lithium secondary battery comprising the same, and more particularly to a non-aqueous electrolyte additive that can improve cycle life and safety properties of a lithium ion secondary battery.According to the present invention, an organometallic compound represented by the Chemical Formula 1 is added to a non-aqueous electrolyte of a battery as an additive, and thus if a battery voltage is out of normal operation voltage range due to a short circuit and overcharge of a battery, etc., the non-aqueous electrolyte additive decomposes and a part of the decomposed additive polymerizes to form an insulating film on a cathode surface, and a part of the metal reacts with an insulating film formed on a cathode surface to improve thermal stability of the battery, thereby improving safety of the battery.