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公开(公告)号：US12170367B2
公开(公告)日：2024-12-17
申请号：US17606648
申请日：2020-09-25
Applicant: LG Chem, Ltd.
Inventor： Min Joon Lee , Seung Beom Cho , Seong Ji Ye , Yoon Bin Park
Abstract: A method of preparing a positive electrode active material precursor for a secondary battery includes preparing a positive electrode active material precursor by a co-precipitation reaction while adding a transition metal-containing solution containing transition metal cations, a basic solution, and an ammonium solution to a batch-type reactor, wherein a molar ratio of ammonium ions contained in the ammonium solution to the transition metal cations contained in the transition metal-containing solution added to the batch-type reactor is 0.5 or less, and a pH in the batch-type reactor is maintained at 11.2 or less.
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Patent Agency Ranking
公开(公告)号：US20220238871A1
公开(公告)日：2022-07-28
申请号：US17606648
申请日：2020-09-25
Applicant: LG Chem, Ltd.
Inventor： Min Joon Lee , Seung Beom Cho , Seong Ji Ye , Yoon Bin Park
Abstract: A method of preparing a positive electrode active material precursor for a secondary battery includes preparing a positive electrode active material precursor by a co-precipitation reaction while adding a transition metal-containing solution containing transition metal cations, a basic solution, and an ammonium solution to a batch-type reactor, wherein a molar ratio of ammonium ions contained in the ammonium solution to the transition metal cations contained in the transition metal-containing solution added to the batch-type reactor is 0.5 or less, and a pH in the batch-type reactor is maintained at 11.2 or less.
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公开(公告)号：US20240083767A1
公开(公告)日：2024-03-14
申请号：US18275751
申请日：2022-02-18
Applicant: LG Chem, Ltd.
Inventor： Min Joon Lee , Seong Ji Ye , Seung Beom Cho , Jang Soo Lee , Yoon Bin Park
IPC: C01G53/00
CPC classification number: C01G53/006 , C01P2006/12
Abstract: A precursor for a positive electrode active material and a method of making the same are disclosed herein. In some embodiments a method includes forming precursor seeds for a positive electrode active material by a co-precipitation reaction while supplying a transition metal aqueous solution, an ammonium cationic complexing agent, and a basic compound to a reaction solution, and growing precursor particles for a positive electrode active material by a co-precipitation reaction while supplying a transition metal aqueous solution, an ammonium cationic complexing agent, and a basic compound to the reaction solution containing the precursor seeds, wherein the co-precipitation reaction to grow the precursor particles proceeds while continuously increasing feed rates of the transition metal aqueous solution and the ammonium cationic complexing agent.
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公开(公告)号：US20250062336A1
公开(公告)日：2025-02-20
申请号：US18936366
申请日：2024-11-04
Applicant: LG Chem, Ltd.
Inventor： Min Joon Lee , Seung Beom Cho , Seong Ji Ye , Yoon Bin Park
Abstract: A method of preparing a positive electrode active material precursor for a secondary battery includes preparing a positive electrode active material precursor by a co-precipitation reaction while adding a transition metal-containing solution containing transition metal cations, a basic solution, and an ammonium solution to a batch-type reactor, wherein a molar ratio of ammonium ions contained in the ammonium solution to the transition metal cations contained in the transition metal-containing solution added to the batch-type reactor is 0.5 or less, and a pH in the batch-type reactor is maintained at 11.2 or less.
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公开(公告)号：US20240124323A1
公开(公告)日：2024-04-18
申请号：US18276366
申请日：2022-02-15
Applicant: LG Chem, Ltd.
Inventor： Seong Ji Ye , Min Joon Lee , Yoon Bin Park
IPC: C01G53/00
CPC classification number: C01G53/50 , C01P2006/11 , C01P2006/12
Abstract: A precursor for a positive electrode active material and a method of making the same are disclosed herein. In some embodiments, a method includes forming precursor seeds for a positive electrode active material by a co-precipitation reaction while supplying a transition metal aqueous solution, an ammonium cationic complexing agent, and a basic compound to a reaction solution, and growing precursor particles for a positive electrode active material from the precursor seeds by a co-precipitation reaction while supplying a transition metal aqueous solution, an ammonium cationic complexing agent, and a basic compound to the reaction solution containing the precursor seeds, wherein feed rates for the transition metal aqueous solution and the ammonium cationic complexing agent to grow the precursor particles are two or more times greater than feed rates for the transition metal aqueous solution and the ammonium cationic complexing agent to grow the precursor seeds.
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公开(公告)号：US20230295819A1
公开(公告)日：2023-09-21
申请号：US18006306
申请日：2021-11-08
Applicant: LG Chem, Ltd.
Inventor： Yoon Bin Park , In Sung Hwang , Hun Min Park , Dong Chul Lee
IPC: C25B11/097 , C25B11/053 , C25B11/063
CPC classification number: C25B11/097 , C25B11/053 , C25B11/063 , C25B1/34
Abstract: The present invention relates to an electrode for electrolysis and a method for manufacturing the same, wherein an electrode coating layer for electrolysis is provided in plurality, and the tin content in each coating layer is configured to increase as the distance from a substrate increases, and the titanium content therein is configured to decrease as the distance from the substrate increases, so that excellent performance is maintained, and also delamination and the like does not occur during firing, so that excellent durability may be implemented.
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