PROCESS FOR MAKING A COATED OXIDE MATERIAL

    公开(公告)号:US20210399291A1

    公开(公告)日:2021-12-23

    申请号:US17309205

    申请日:2019-11-11

    Applicant: BASF SE

    Abstract: Process for making a coated oxide material wherein said process comprises the following steps: (a) providing a particulate material selected from lithiated nickel-cobalt aluminum oxides, lithium cobalt oxide, lithiated cobalt-manganese oxides and lithiated layered nickel-cobalt-manganese oxides, (b) treating said particulate material with an aqueous medium, (c) removing said aqueous medium, (d) drying said treated particulate material, (e) treating said particulate material from step (d) with a metal amide or alkyl metal compound, (f) treating the material obtained in step (e) with moisture or an oxidizing agent, and, optionally, repeating the sequence of steps (e) and (f).

    PROCESS FOR COATING AN OXIDE MATERIAL

    公开(公告)号:US20210218008A1

    公开(公告)日:2021-07-15

    申请号:US17250792

    申请日:2019-08-30

    Applicant: BASF SE

    Abstract: The present disclosure relates to a process for coating an oxide material comprising: (a) providing a particulate material chosen from lithiated nickel-cobalt aluminum oxides, lithiated cobalt-manganese oxides, and lithiated layered nickel-cobalt-manganese oxides, (b) treating the cathode active material with a metal alkoxide, metal amide, alkyl metal compound, metal halide, or metal hydride at a pressure ranging from 5 mbar to 1 bar above ambient pressure, (c) deactivating the material obtained in step (b) with a HF containing gas at ambient pressure,  wherein step (b) is carried out in a mechanical mixer chosen from compulsory mixers and free-fall mixers, or step (b) is carried out using a moving bed or a fixed bed.

    PROCESS FOR MAKING AN ELECTRODE ACTIVE MATERIAL, AND ELECTRODE ACTIVE MATERIAL

    公开(公告)号:US20210083285A1

    公开(公告)日:2021-03-18

    申请号:US16968322

    申请日:2019-01-31

    Applicant: BASF SE

    Abstract: Process for making a partially coated electrode active material wherein said process comprises the following steps: (a) Providing an electrode active material according to general formula Li1+x, TM1+XO2, wherein TM is a combination of Ni, Co and, optionally, Mn, and, optionally, at least one metal selected from Al, Ti and Zr, and x is in the range of from zero to 0.2, wherein at least 60 mole-% of the transition metal of TM is Ni, and wherein said electrode active material has a residual moisture content in the range of from 50 to 1,000 ppm, (b) treating said electrode active material with a metal alkoxide or metal halide or metal amide or alkyl metal compound, (c) treating the material obtained in step (b) with moisture, (d) repeating the sequence of steps (b) and (c) twice to ten times, (e) performing a post-treatment by heating the material obtained after the last step (d) at a temperature from 200 to 400° C.

    PROCESS FOR MAKING A PARTIALLY COATED ELECTRODE ACTIVE MATERIAL, AND ELECTRODE ACTIVE MATERIAL

    公开(公告)号:US20210083284A1

    公开(公告)日:2021-03-18

    申请号:US16963714

    申请日:2019-01-31

    Applicant: BASF SE

    Abstract: A process for making a partially coated electrode active material may involve: (a) providing an electrode active material of the formula Li1+xTM1−xO2, wherein TM is a combination of Ni, Co and, optionally, Mn, and, optionally, at least one metal selected from Al, Ti, Mo, W, and Zr, and x is in the range of from zero to 0.2, wherein at least 60 mole-% of the transition metal of TM is Ni, and wherein the electrode active material has a residual moisture content in the range of from 50 to 1,000 ppm; (b) treating the electrode active material with a metal alkoxide or metal halide or metal amide or alkyl metal compound; (c) treating the material obtained in (b) with moisture; and (d) repeating the sequence of (b) and (c) twice to 4 times, wherein, in the last sequence of (b) and (c), moisture is at least partially substituted by ozone.

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