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.

公开(公告)号：US20210098785A1

公开(公告)日：2021-04-01

申请号：US16975170

申请日：2019-02-11

Applicant: UMICORE ,  UMICORE KOREA LTD.

Inventor： Jeong-Rae KIM ,  Jean-Sébastien BRIDEL ,  Sul-Hee MIN ,  Jong-Ju LEE

IPC: H01M4/525 ,  H01M4/1391 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/62 ,  H01M4/04

Abstract: A positive electrode slurryfied mixture used in the manufacturing of a rechargeable battery, the mixture comprising: —a positive electrode active material comprising a lithium metal-based oxide, the metal in the lithium metal-based oxide comprising either one or more of Ni, Mn, Al and Co; —a carbon-based conductivity enhancer; and —a binder material that is soluble in a polar aprotic solvent, characterized in that the mixture further comprises a powderous alkali hydroxyde compound having a water content less than 5 wt %.