Positive electrode materials having a superior hardness strength

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United States of America Patent

PATENT NO 10833328
APP PUB NO 20170125808A1
SERIAL NO

15317161

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Abstract

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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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Patent Owner(s)

Patent OwnerAddress
UMICORE1000 BRUSSELS
UMICORE KOREA LTD71 3GONGDAN 2-RO SEOBUK-GU CHEONAN CHUNGCHEONGNAM-DO 331-200

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  • 2015 Application Filing Year
  • H01M Class
  • 5536 Applications Filed
  • 4391 Patents Issued To-Date
  • 79.32 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances20152016201720182019202020212022202320240255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Blangero, Maxime Cheonan, KR 35 168
Cho, WooRam Gyeonggi-do, KR 3 7
Choi, Da-In Cheonan, KR 7 60
Kim, JiHye Dujeong-dong, KR 213 792

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Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges19981435458101 - 1011 - 2021 - 3031 - 400100200300400500600700800900100011001200130014001500160017001800190020002100

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