Cobalt oxide as a precursor of positive electrode materials for rechargeable lithium ion batteries
AssigneesUmicore AG & Co. KG, Umicore Korea Ltd.
InventorsKyeongSe SONG, AReum PARK, HeeSuk KU, JinWook KIM
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Abstract
A cobalt oxide precursor powder for use in preparing a positive electrode active material and methods of production thereof are described. The precursor powder comprises particles has a Fd-3m structure and a formula Co1-yAyOx, wherein 1<x≤4/3, 0≤y≤0.05, wherein A comprises at least one element from the group consisting of Ni, Mn, Al, Mg, Ti, and Zr. The particles have a D50≥15 μm and a compressive strength at least 100 MPa and at most 170 MPa.
Claims6
1-5. (canceled)
A cobalt oxide precursor powder for use in preparing a positive electrode active material, wherein the precursor composition comprises particles having a formula Co1-y ÅyOx, wherein 1<x≤4/3, 0≤y≤0.05, A comprising at least one element selected from the group consisting of Ni, Mn, Al, Mg, Ti, and Zr, wherein the particles composition has a Fd-3m crystal structure and wherein the particles have a D50≥15 μm and a compressive strength of at least 100 MPa and at most 170 MPa.
Dependencies are inferred from the claim text.