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公开(公告)号：US20230084633A1
公开(公告)日：2023-03-16
申请号：US17799024
申请日：2021-05-26
Applicant: LG Chem, Ltd.
Inventor： Ju Han Yoon , Kyoung Wan Park , Hyeon Jin Kim , Song Yi Yang , Young Su Park
IPC: H01M4/525 , H01M4/505 , H01M10/0525 , C01G53/04 , C01G53/00
Abstract: A method of preparing a bimodal positive electrode active material precursor and a positive electrode active material prepared from the same are disclosed herein. In some embodiments, the method includes inputting a first reaction source material including a first aqueous transition metal solution into a reactor, precipitating at pH 12 or more to induce nucleation of a first positive electrode active material precursor particle, and at less than pH 12 to induce growth of the same, inputting a second reaction source material including a second aqueous transition metal solution into the reactor containing the first positive electrode active material precursor particle, precipitating at pH 12 or more to induce the nucleation of a second positive electrode active material precursor particle, and at less than pH 12 to induce simultaneous growth of the first and second positive electrode active material precursor particles, thereby preparing a bimodal positive electrode active material precursor.
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公开(公告)号：US12119491B2
公开(公告)日：2024-10-15
申请号：US17799024
申请日：2021-05-26
Applicant: LG Chem, Ltd.
Inventor： Ju Han Yoon , Kyoung Wan Park , Hyeon Jin Kim , Song Yi Yang , Young Su Park
CPC classification number: H01M4/525 , C01G53/04 , C01G53/50 , H01M4/505 , H01M10/0525 , C01P2002/52 , C01P2004/03 , C01P2004/53 , C01P2004/61 , C01P2004/84 , C01P2006/10 , C01P2006/11 , C01P2006/40 , H01M2004/028
Abstract: A method of preparing a bimodal positive electrode active material precursor and a positive electrode active material prepared from the same are disclosed herein. In some embodiments, the method includes inputting a first reaction source material including a first aqueous transition metal solution into a reactor, precipitating at pH 12 or more to induce nucleation of a first positive electrode active material precursor particle, and at less than pH 12 to induce growth of the same, inputting a second reaction source material including a second aqueous transition metal solution into the reactor containing the first positive electrode active material precursor particle, precipitating at pH 12 or more to induce the nucleation of a second positive electrode active material precursor particle, and at less than pH 12 to induce simultaneous growth of the first and second positive electrode active material precursor particles, thereby preparing a bimodal positive electrode active material precursor.
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公开(公告)号：US20250070149A1
公开(公告)日：2025-02-27
申请号：US18722796
申请日：2023-08-17
Applicant: LG Chem, Ltd.
Inventor： Byung Hyun Hwang , Nam II Kim , Hyun Jin Jung , Chan Ju Beak , Hye Youn Hwang , Hyun Ah Park , Seong Hoon Kang , Won Taek Hong , Won Tae Kim , Woo Hyun Kim , Jun Gil Kim , Ju Han Yoon , Young Su Park
Abstract: A positive electrode active material precursor includes Ni and Mn and secondary particles formed by the aggregation of a plurality of primary particles. The secondary particles have a ratio of a core area to a total area of the particles ranging from 28.7% to 34.1%, and a porosity ranging from 11.3% to 11.7%. Also provided is a method for preparing the positive electrode active material precursor. Additionally, a positive electrode active material including a reaction product of the positive electrode active material precursor and a lithium raw material is provided. Also provided is a method for preparing a positive electrode active material using the positive electrode active material precursor.
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公开(公告)号：US20250006919A1
公开(公告)日：2025-01-02
申请号：US18886135
申请日：2024-09-16
Applicant: LG Chem, Ltd.
Inventor： Ju Han Yoon , Kyoung Wan Park , Hyeon Jin Kim , Song Yi Yang , Young Su Park
Abstract: A method of preparing a bimodal positive electrode active material precursor and a positive electrode active material prepared from the same are disclosed herein. In some embodiments, the method includes inputting a first reaction source material including a first aqueous transition metal solution into a reactor, precipitating at pH 12 or more to induce nucleation of a first positive electrode active material precursor particle, and at less than pH 12 to induce growth of the same, inputting a second reaction source material including a second aqueous transition metal solution into the reactor containing the first positive electrode active material precursor particle, precipitating at pH 12 or more to induce the nucleation of a second positive electrode active material precursor particle, and at less than pH 12 to induce simultaneous growth of the first and second positive electrode active material precursor particles, thereby preparing a bimodal positive electrode active material precursor.
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