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1.发明公开公开(公告)号：US20240234728A1
公开(公告)日：2024-07-11
申请号：US18095408
申请日：2023-01-10
Applicant: UCHICAGO ARGONNE, LLC
Inventor： YoungHo Shin
CPC classification number: H01M4/587 , H01M4/0471 , H01M4/0492 , H01M4/625 , H01M2004/028
Abstract: The invention provides a cathode particle comprising a secondary particle comprised of primary particles sans lithium proximal to their surfaces, wherein each of the primary particles have embedded carbon layers or passageways. Also provided is a method for making a single crystal particle having embedded carbon layers, the method comprising dissolving metal salts and carbon stock in water to create a solution; mixing the solution with a lithium containing compound at a subcritical temperature of water to create a mixture of agglomerated particles; allowing the mixture to reach a hydrothermal reaction condition for a time to form carbon layered grain-free single crystal lithiated particles; removing surface lithium from the single crystal lithiated particles; drying the single crystal partially de-lithiated particles after washing and filtering; and heat-treating the particles after forming granulated secondary particles such that the secondary particles comprise a plurality of the primary particles physically contacting each other.
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公开(公告)号：US11349118B2
公开(公告)日：2022-05-31
申请号：US16140234
申请日：2018-09-24
Applicant: UCHICAGO ARGONNE, LLC
Inventor： YoungHo Shin , Gregory K. Krumdick
Abstract: The invention provides a cathode active material having a discrete change in concentrations of a first base region and a second pulse region. Also provided is a method for preparing a cathode active material, the method having the steps: supplying chelating agent, aqueous basic solution and a first aqueous metal salt solution to a reactor to create a base region; supplying a second aqueous metal-salt solution to a reactor to form a pulse region, wherein the second aqueous metal-salt solution is intermittently or continuously added during or after the creation of the base region; thermally treating the base region and the pulse region to create active metal precursors; mixing the precursors with lithium salt to produce a mixture; and thermally treating the mixture.
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3.发明申请公开(公告)号：US20200099045A1
公开(公告)日：2020-03-26
申请号：US16140234
申请日：2018-09-24
Applicant: UCHICAGO ARGONNE, LLC
Inventor： YoungHo Shin , Gregory K. Krumdick
Abstract: The invention provides a cathode active material having a discrete change in concentrations of a first base region and a second pulse region. Also provided is a method for preparing a cathode active material, the method having the steps: supplying chelating agent, aqueous basic solution and a first aqueous metal salt solution to a reactor to create a base region; supplying a second aqueous metal-salt solution to a reactor to form a pulse region, wherein the second aqueous metal-salt solution is intermittently or continuously added during or after the creation of the base region; thermally treating the base region and the pulse region to create active metal precursors; mixing the precursors with lithium salt to produce a mixture; and thermally treating the mixture.
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