- Patent Title: Positive electrode materials having a superior hardness strength
-
Application No.: US17019626Application Date: 2020-09-14
-
Publication No.: US11335907B2Publication Date: 2022-05-17
- Inventor: Maxime Blangero , Da-In Choi , WooRam Cho , JiHye Kim
- Applicant: Umicore , Umicore Korea Ltd.
- Applicant Address: BE Brussels; KR Chungnam
- Assignee: Umicore,Umicore Korea Ltd.
- Current Assignee: Umicore,Umicore Korea Ltd.
- Current Assignee Address: BE Brussels; KR Chungnam
- Agency: NK Patent Law
- Priority: EP14171694 20140610
- Main IPC: H01M4/525
- IPC: H01M4/525 ; H01M4/505 ; C01G53/00 ; H01M10/0525 ; H01M4/1391 ; H01M10/052 ; H01M4/131 ; H01M4/02

Abstract:
A powderous positive electrode material for a lithium secondary battery has the general formula Li1+x[Ni1−a−b−cMaM′bM″c]1−xO2−z. M is one or more elements of the group Mn, Zr and Ti. M′ is one or more elements of the group Al, B and Co. M″ is a dopant different from M and M′, and x, a, b and c are expressed in mol with −0.02≤x≤0.02, 0≤c≤0.05, 0.10≤(a+b)≤0.65 and 0≤z≤0.05. The material has an unconstrained cumulative volume particle size distribution value (Γ0(D10P=0)), a cumulative volume particle size distribution value after having been pressed at a pressure of 200 MPa (ΓP(D10P=200)) and a cumulative volume particle size distribution value after having been pressed at a pressure of 300 MPa (ΓP(D10P=300)). When ΓP(D10P=200) is compared to Γ0(D10P=0), the relative increase in value is less than 100%. When ΓP(D10P=300) is compared to Γ0(D10P=0), the relative increase in value is less than 120%.
Public/Granted literature
- US20210005891A1 Positive electrode materials having a superior hardness strength Public/Granted day:2021-01-07
Information query