公开(公告)号：US07947398B2

公开(公告)日：2011-05-24

申请号：US11779576

申请日：2007-07-18

申请人： Soo Jin Yoon ,  Jeong Ju Cho ,  Ho Chun Lee

发明人： Soo Jin Yoon ,  Jeong Ju Cho ,  Ho Chun Lee

IPC分类号： H01M6/18

CPC分类号： H01M10/0567 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M4/661 ,  H01M10/0525 ,  H01M10/0568

摘要： Disclosed is an electrolyte for a secondary battery comprising an electrolyte salt and an electrolyte solvent, the electrolyte further comprising a lactam-based compound substituted with an electron withdrawing group (EWG) at the nitrogen position thereof. The electrolyte allows formation of a firm and dense SEI film on the surface of an anode, minimizes irreversible oxidative decomposition at a cathode, and thus can provide a battery with significantly improved lifespan, stability and high temperature characteristics.

摘要翻译： 公开了一种包含电解质盐和电解质溶剂的二次电池用电解质，电解质还包含在其氮位置被取代基取代的内酰胺类化合物（EWG）。 电解质允许在阳极表面形成牢固且致密的SEI膜，使阴极处的不可逆氧化分解最小化，从而可以提供具有显着改善的寿命，稳定性和高温特性的电池。

公开(公告)号：US08119292B2

公开(公告)日：2012-02-21

申请号：US11521892

申请日：2006-09-15

申请人： Ho Chun Lee ,  Tae Yoon Park ,  Yong Su Choi ,  Soo Jin Yoon ,  Hong Kyu Park ,  Hyun Min Jung ,  Jeong Ae Ahn

发明人： Ho Chun Lee ,  Tae Yoon Park ,  Yong Su Choi ,  Soo Jin Yoon ,  Hong Kyu Park ,  Hyun Min Jung ,  Jeong Ae Ahn

IPC分类号： H01M10/40

CPC分类号： H01M10/0567 ,  H01M4/131 ,  H01M4/139 ,  H01M10/04 ,  H01M10/052

摘要： Disclosed is a lithium secondary battery comprising a cathode, an anode, an electrolyte and a separator, wherein the anode comprises an anode active material having a specific surface area of 3 m2/g or less, and the electrolyte comprises 0.1˜6 parts by weight of a propane sultone-based compound based on 100 parts by weight of the electrolyte. The lithium secondary battery solves the problem of performance degradation caused by the use of an increased amount of a propane sultone-based compound required to form a SEI film on the surface of an anode upon the first charge cycle. Also, the lithium secondary battery can provide improved cycle characteristics and high-temperature storage characteristics.

摘要翻译： 公开了包含阴极，阳极，电解质和隔膜的锂二次电池，其中所述阳极包括比表面积为3m 2 / g以下的负极活性物质，所述电解质包含0.1〜6重量份 的基于100重量份电解质的丙烷磺内酯基化合物。 锂二次电池解决了在第一次充电循环时在阳极表面上使用增加量的形成SEI膜所需的丙烷磺内酯类化合物引起的性能下降的问题。 此外，锂二次电池可以提供改进的循环特性和高温存储特性。

公开(公告)号：US07824578B2

公开(公告)日：2010-11-02

申请号：US11521780

申请日：2006-09-15

申请人： Ho Chun Lee ,  Tae Yoon Park ,  Yong Su Choi ,  Soo Jin Yoon ,  Hong Kyu Park

发明人： Ho Chun Lee ,  Tae Yoon Park ,  Yong Su Choi ,  Soo Jin Yoon ,  Hong Kyu Park

IPC分类号： H01M10/0567 ,  H01M10/05 ,  H01M6/16

CPC分类号： H01M10/0567 ,  H01M4/131 ,  H01M4/62 ,  H01M10/052 ,  H01M2300/0025 ,  Y02T10/7011

摘要： Disclosed is an electrolyte for batteries, which comprises: (a) an electrolyte salt; (b) an electrolyte solvent; and (c) a sulfonate-based compound containing at least one electron withdrawing group (EWG) selected from the group consisting of a cyano group (—CN), an isocyanate group (—NCO), a thiocyanate group (—SCN) and an isothiocyanate group (—NCS). An electrode comprising the sulfonate-based compound or a chemical reaction product thereof, partially or totally formed on the surface thereof, and an electrochemical device comprising the electrolyte and/or the electrode are also disclosed. The electrochemical device using the sulfonate-based compound containing a cyano group, an isocyanate group, a thiocyanate group and/or an isothiocyanate group as an additive for electrolytes can provide significantly improved high-temperature lifespan characteristics.

摘要翻译： 公开了一种电池用电解质，其包括：（a）电解质盐; （b）电解质溶剂; 和（c）含有至少一个选自氰基（-CN），异氰酸酯基（-NCO），硫氰酸酯基（-SCN）和 - 氰基）的吸电子基团（EWG）的磺酸酯基化合物和 异硫氰酸酯基团（-NCS）。 还公开了包含部分或全部形成在其表面上的磺酸盐基化合物或其化学反应产物的电极和包含电解质和/或电极的电化学装置。 使用含有氰基，异氰酸酯基，硫氰酸酯基和/或异硫氰酸酯基作为电解质添加剂的磺酸基类化合物的电化学装置可以显着提高高温寿命特性。