公开(公告)号：US20210234200A1

公开(公告)日：2021-07-29

申请号：US17051294

申请日：2019-05-02

Applicant: UMICORE ,  SOLVAY S.A.

Inventor： JiHye KIM ,  Jens PAULSEN ,  AReum PARK ,  Dae-Hyun KIM ,  Hee-Sung GIL ,  Jean-Sébastien BRIDEL ,  Ji-Hye WON ,  Moon-Hyung CHOI ,  Mi-Soon OH ,  Hyuncheol LEE ,  Lawrence Alan HOUGH ,  Hae-Young KIM

IPC: H01M10/0568 ,  H01M10/0525 ,  H01M10/0569

Abstract: A liquid electrolyte lithium secondary battery cell comprising: —a positive electrode material comprising a lithium transition metal-based oxide powder having a general formula Li1+a ((Niz (Ni0.5Mn0.5)y Cox)1-k Ak)1-a O2, wherein A is a dopant, −0.025≤a≤0.025, 0.18≤x≤0.22, 0.42≤z≤0.52, 1.075

公开(公告)号：US20210135291A1

公开(公告)日：2021-05-06

申请号：US17051322

申请日：2019-05-02

Applicant: UMICORE ,  SOLVAY S.A.

Inventor： Jeong-Rae KIM ,  Jong-Ju LEE ,  Jean-Sébastien BRIDEL ,  Ji-Hye WON ,  Moon-Hyung CHOI ,  Mi-Soon OH ,  Hyuncheol LEE ,  Lawrence Alan HOUGH ,  Hae-Young KIM

IPC: H01M10/0568 ,  H01M10/0569 ,  H01M10/0525 ,  H01M4/525 ,  H01M4/505

Abstract: A liquid electrolyte lithium secondary battery cell comprising: a positive electrode including a powderous positive active material having the following chemical formula: Li1−x(Co1-a-b-cNiaMnbM″c)1−xO2 with −0.01≤x≤0.01, 0.00≤a≤0.09, 0.01≤b≤0.05, and 0.00≤c≤0.03 wherein M″ is either one or more metals of the group consisting of Al, Mg, Ti and Zr; and an electrolyte composition comprising at least one cyclic carbonate; at least one fluorinated acyclic carboxylic acid ester; at least one electrolyte salt; at least one lithium compound selected from lithium phosphates compounds, lithium boron compounds, lithium sulfonates compounds and mixtures thereof; at least one cyclic sulfur compound; and optionally at least one cyclic carboxylic acid anhydride.