公开(公告)号：US20230344002A1

公开(公告)日：2023-10-26

申请号：US18003735

申请日：2021-12-29

申请人： Samsung SDI Co., Ltd.

发明人： Myunghwan Jeong ,  Myunghoon Kim ,  Sanghoon Kim ,  Yunhee Kim ,  Injun Park ,  Hongryeol Park ,  Jeongmin Shin ,  Seungryong Oh ,  Hyunbong Choi

IPC分类号： H01M10/0567 ,  H01M10/0568

CPC分类号： H01M10/0567 ,  H01M10/0568

摘要： Provided are an electrolyte for a lithium secondary battery including a lithium salt, an organic solvent; and an additive, wherein the additive includes a first compound represented by Formula 1 and a second compound represented by Formula 2 below, and a mixing weight ratio of the first compound to the second compound is in a range of 1:9 to 9:1, and a lithium secondary battery including the same.




In Formula 1, X1, R1 to R6, and n in Formula 1 and A1 and A2 in Formula 2 are as defined in the detailed description.

公开(公告)号：US12051779B2

公开(公告)日：2024-07-30

申请号：US17538800

申请日：2021-11-30

申请人： SAMSUNG SDI CO., LTD.

发明人： Hyunbong Choi ,  Myunghoon Kim ,  Sanghoon Kim ,  Yunhee Kim ,  Injun Park ,  Hongryeol Park ,  Jeongmin Shin ,  Seungryong Oh ,  Myunghwan Jeong

IPC分类号： H01M10/0569 ,  H01M10/0525 ,  H01M10/0565

CPC分类号： H01M10/0569 ,  H01M10/0525 ,  H01M10/0565

摘要： An electrolyte for a rechargeable lithium battery includes a non-aqueous organic solvent, a lithium salt, and an additive, wherein the additive includes a compound represented by Chemical Formula 1 and a compound represented by Chemical Formula 2:




wherein X is a fluoro group, a chloro group, a bromo group, or an iodo group, and A is a C1 to C10 alkylene group or (—C2H4—O—C2H4—)m, wherein m is an integer of 1 to 10.

公开(公告)号：US11367900B2

公开(公告)日：2022-06-21

申请号：US17023272

申请日：2020-09-16

申请人： SAMSUNG SDI CO., LTD.

发明人： Jin-Hyeok Lim ,  Younghye Kang ,  Soojin Kim ,  Aeran Kim ,  Suyeol Ryu ,  Injun Park ,  Jinah Seo ,  Jeongmin Shin ,  Junyong Lee ,  Tae Jin Lee ,  Myunghwan Jeong ,  Hyejeong Jeong ,  Wonseok Cho ,  Olga Tsay ,  Hyunbong Choi ,  Pavel Shatunov

IPC分类号： H01M6/04 ,  H01M10/0567 ,  H01M4/36 ,  H01M4/587 ,  H01M4/38 ,  H01M4/525 ,  H01M10/0525 ,  C01G51/00 ,  C01G53/00 ,  C07F9/06 ,  H01M10/0568

摘要： The present invention relates to a lithium secondary battery. The lithium secondary battery includes a positive electrode including a positive active material; a negative electrode including a negative active material; and an electrolyte including a non-aqueous organic solvent, a lithium salt, and an additive including a compound represented by Chemical Formula 1. The negative active material includes Si at about 0.1 wt % to about 32 wt % in amount based on a total weight of the negative active material. wherein, in Chemical Formula 1, A is a substituted or unsubstituted aliphatic chain or (—C2H4—O—C2H4-)n, and n is an integer from 1 to 10.