公开(公告)号：US20200373617A1

公开(公告)日：2020-11-26

申请号：US16638526

申请日：2018-08-01

申请人： SAMSUNG SDI CO., LTD.

发明人： Yunhee KIM ,  Kyoung Soo KIM ,  Yongchan YOU ,  Erang CHO ,  Seonju CHOI

IPC分类号： H01M10/0567 ,  H01M4/38 ,  H01M4/587 ,  H01M4/36 ,  H01M4/62 ,  H01M10/0525 ,  C07F7/08 ,  C07F9/6574 ,  C07F5/04

摘要： The present invention relates to a lithium secondary battery comprising: a negative electrode comprising a negative electrode active material containing Si or Sn, a positive electrode comprising a positive electrode active material, and a non-aqueous electrolyte. The non-aqueous electrolyte comprises: a non-aqueous organic solvent; a lithium salt; fluoroethylene carbonate; a first additive containing at least one compound among compounds resented by chemical formulas 1 to 4; and a second additive containing at least one compound among compounds represented by chemical formula 5 or 6.

公开(公告)号：US20190074546A1

公开(公告)日：2019-03-07

申请号：US16113254

申请日：2018-08-27

申请人： SAMSUNG SDI CO., LTD.

发明人： Yunhee KIM ,  Kyoung Soo KIM ,  Taejeong KIM ,  Dohyung PARK ,  Yongchan YOU ,  Erang CHO ,  Sun-Joo CHOI

IPC分类号： H01M10/0567 ,  H01M10/0525 ,  H01M4/525 ,  H01M4/505

摘要： A rechargeable lithium battery including a negative electrode; a positive electrode including a positive active material; and a non-aqueous electrolyte, wherein the non-aqueous electrolyte includes a non-aqueous organic solvent, a lithium salt, a first additive including a compound represented by one of Chemical Formulae 1 to 4 and a second additive including a compound represented by Chemical Formula 5 or Chemical Formula 6, or a combination thereof, the positive active material includes a compound that includes about 70 mol % or greater of Ni based on the total mole number of all metal elements except for Li,

公开(公告)号：US20200373616A1

公开(公告)日：2020-11-26

申请号：US16638522

申请日：2018-08-01

申请人： SAMSUNG SDI CO., LTD.

发明人： Seonju CHOI ,  Kyoung Soo KIM ,  Yunhee KIM ,  Yongchan YOU ,  Erang CHO

IPC分类号： H01M10/0567 ,  H01M4/525 ,  H01M4/505 ,  H01M10/0525 ,  H01M10/0568

摘要： A lithium secondary battery is disclosed. The lithium secondary battery according to an embodiment comprises: an anode; a cathode comprising a cathode active material; and a nonaqueous electrolyte, wherein the nonaqueous electrolyte comprises a nonaqueous organic solvent, a lithium salt, a first additive comprising at least one of compounds represented by chemical formulae 1-4, and a second additive comprising at least one of compounds represented by chemical formulae 5 to 6, and the cathode active material can comprise a compound containing 60 mol % or greater of Ni.