Positive electrode materials having a superior hardness strength
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United States of America Patent
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Nov 10, 2020
Grant Date -
May 4, 2017
app pub date -
Jun 1, 2015
filing date -
Jun 10, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A powderous positive electrode material for a lithium secondary battery, the material having the general formula Li1+x[Ni1−a−b−cMaM′bM″c]1−xO2−z; M being either one or more elements of the group Mn, Zr and Ti, M′ being either one or more elements of the group Al, B and Co, M″ being a dopant different from M and M′, x, a, b and c being expressed in mol with −0.02≤x≤0.02, 0≤c≤0.05, 0.10≤(a+b)≤0.65 and 0≤z≤0.05; and wherein the powderous material is characterized by having a BET value ≤0.37 m2/g, a Dmax<50 μm, and a hardness strength index ΔΓ(P) of no more than 100%+(1−2a−b)×160% for P=200 MPa, wherein (Formula I) (I) with D 10p=0 being the D10 value of the unconstrained powder (P=0 M Pa), r°(D 10p=0) being the cumulative volume particle size distribution of the unconstrained powder at D 10p=0, and Γp(D 10p=0) being the cumulative volume particle size distribution at D10p=0 of the pressed samples with P being expressed in M Pa.
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
UMICORE | 1000 BRUSSELS | |
UMICORE KOREA LTD | 71 3GONGDAN 2-RO SEOBUK-GU CHEONAN CHUNGCHEONGNAM-DO 331-200 |
International Classification(s)

- 2015 Application Filing Year
- H01M Class
- 5536 Applications Filed
- 4391 Patents Issued To-Date
- 79.32 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Blangero, Maxime | Cheonan, KR | 35 | 168 |
# of filed Patents : 35 Total Citations : 168 | |||
Cho, WooRam | Gyeonggi-do, KR | 3 | 7 |
# of filed Patents : 3 Total Citations : 7 | |||
Choi, Da-In | Cheonan, KR | 7 | 60 |
# of filed Patents : 7 Total Citations : 60 | |||
Kim, JiHye | Dujeong-dong, KR | 213 | 792 |
# of filed Patents : 213 Total Citations : 792 |
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- H01M Class
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