公开(公告)号：US11978887B2

公开(公告)日：2024-05-07

申请号：US16643561

申请日：2018-08-30

Applicant: Microvast Power Systems Co., LTD.

Inventor： Bryan T. Yonemoto ,  Huijie Guo ,  Xiao Zhang ,  Zhifeng Zhang ,  Xuelei Sun ,  Tianshu Deng

IPC: H01M4/36 ,  C01G53/00 ,  H01M4/02 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525

CPC classification number: H01M4/364 ,  C01G53/006 ,  C01G53/44 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  C01P2002/85 ,  C01P2004/03 ,  C01P2004/61 ,  C01P2006/11 ,  C01P2006/12 ,  C01P2006/40 ,  H01M2004/021 ,  H01M2004/028

Abstract: A method of preparing cathode particles using a co-precipitation reaction in a reactor is disclosed. A feed stream (a) containing metal cations is fed into the reactor, and a feed stream (b) containing anions is fed into the reactor, wherein a ratio of the metal cations in the feed stream (a) is continuously changed from A1 at time t1 to A2 at time t2. The feed stream (a) and the feed stream (b) are contacted in the reactor to form precipitated precursor particles, and at least one transition metal component in the particle has a non-linear continuous concentration gradient profile over at least a portion along a thickness direction of the particle.

公开(公告)号：US12234158B2

公开(公告)日：2025-02-25

申请号：US17043610

申请日：2019-05-21

Applicant: Microvast Power Systems Co., LTD.

Inventor： Bryan Yonemoto ,  Xiao Zhang ,  Huijie Guo ,  Jianzhao Liu

IPC: C01G53/00 ,  H01M4/04 ,  H01M4/1391 ,  H01M4/36 ,  H01M4/525 ,  H01M4/02

Abstract: The invention relates to a method for preparing transitional-metal particles (cathode particle precursor) under a co-precipitation reaction. In this method, by feeding different types of anion compositions and/or cation compositions, and adjusting the pH to match with the species, precipitated particles are deposited to form a slurry, colleting the slurry, treating with water, and drying to get a cathode particle precursor. Mixing the cathode particle precursor with a lithium source and calcining to yield core-shell structured cathode active particles. Such cathode active particle can be used to prepare cathode of lithium-ion battery.

公开(公告)号：US11679992B2

公开(公告)日：2023-06-20

申请号：US17043623

申请日：2019-06-11

Applicant: Microvast Power Systems Co., LTD.

Inventor： Bryan Yonemoto ,  Xiao Zhang

IPC: C01G53/00 ,  B01J4/00 ,  C01G53/06 ,  H01M4/04 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/525 ,  B01J19/00 ,  H01M4/139 ,  H01M4/13 ,  H01M10/0525 ,  H01M4/02

CPC classification number: C01G53/006 ,  B01J4/008 ,  B01J19/0086 ,  C01G53/06 ,  H01M4/0497 ,  H01M4/13 ,  H01M4/131 ,  H01M4/139 ,  H01M4/1391 ,  H01M4/525 ,  B01J2204/002 ,  B01J2219/00177 ,  B01J2219/00186 ,  C01P2002/52 ,  C01P2004/03 ,  C01P2004/84 ,  C01P2006/40 ,  H01M10/0525 ,  H01M2004/028

Abstract: The invention relates to a method for preparing core-shell structured particle precursor under a co-precipitation reaction. In this method, by controlling the feeding of different types of anion compositions and/or cation compositions, and adjusting the pH to match with the species, precipitated particles are deposited to form a precipitated particle slurry, filtering, and drying the precipitated particle slurry to yield the particle precursor. The invention also provides a particle precursor which includes a core-shell structure. The shell is made of gradient anions and/or cations. Such particle precursor can be used to prepare cathode of lithium-ion battery.

公开(公告)号：US12006229B2

公开(公告)日：2024-06-11

申请号：US17043649

申请日：2019-06-11

Applicant: Microvast Power Systems Co., LTD.

Inventor： Bryan Yonemoto ,  Xiao Zhang

IPC: H01M4/1391 ,  B01J4/00 ,  B01J19/00 ,  C01G53/00 ,  C01G53/06 ,  H01M4/04 ,  H01M4/13 ,  H01M4/131 ,  H01M4/139 ,  H01M4/525 ,  H01M4/02 ,  H01M10/0525

CPC classification number: C01G53/006 ,  B01J4/008 ,  B01J19/0086 ,  C01G53/06 ,  H01M4/0497 ,  H01M4/13 ,  H01M4/131 ,  H01M4/139 ,  H01M4/1391 ,  H01M4/525 ,  B01J2204/002 ,  B01J2219/00177 ,  B01J2219/00186 ,  C01P2002/52 ,  C01P2004/03 ,  C01P2004/84 ,  C01P2006/40 ,  H01M2004/028 ,  H01M10/0525

Abstract: The present disclosure provides a method for preparing full-gradient particle precursors, and the full-gradient particle precursor prepared thereby. By controlling different types of anion compositions and/or cation compositions gradually changed to other types, and adjusting the pH to match with the species, precipitated particles are deposited to form a slurry, collecting the precipitated particle, treating with water, and drying to yield the particle precursor. After being washed and dried, the particle precursor is further mixed with lithium source, after calcining to yield cathode active particles. The cathode active particles can be used to prepare cathode of lithium-ion battery.

公开(公告)号：US11367873B2

公开(公告)日：2022-06-21

申请号：US16581802

申请日：2019-09-25

Applicant: Microvast Power Systems Co., Ltd.

Inventor： Bryan Yonemoto ,  Karima Lasri ,  Xiao Zhang

IPC: H01M4/525 ,  H01M4/505

Abstract: A cathode active material and a Lithium-ion electrochemical system thereof are provided. The lithium-ion cathode material is described by xLiMO2*(1−x)(LiaM′1−a)Oy, M and M′ independently comprises one or more metal ions that together have a combined average oxidation state between 3+ or 2+, 1>x≥0.5, 0.75≥a>0, 1≥y≥0.625.

公开(公告)号：US11322738B2

公开(公告)日：2022-05-03

申请号：US16378554

申请日：2019-04-08

Applicant: Microvast Power Systems Co., LTD.

Inventor： Bryan Yonemoto ,  Xiao Zhang

IPC: H01M4/36 ,  H01M10/0525 ,  H01M4/525 ,  H01M4/48 ,  C01G53/00 ,  H01M4/505 ,  H01M4/02

Abstract: The invention relates to a method for preparing cathode particles under a co-precipitation reaction by feeding NaOH and metal sulfate solution into different vessels. The invention further provides a cathode active material having the cathode particles. By the method of the invention, the number density distribution of prepared particles is much smaller than feeding NaOH and metal sulfate together into same vessel.

公开(公告)号：US11145858B2

公开(公告)日：2021-10-12

申请号：US16746874

申请日：2020-01-19

Applicant: Microvast Power Systems Co., Ltd.

Inventor： Bryan T. Yonemoto ,  Karima Lasri ,  Xiao Zhang

IPC: H01M4/36 ,  H01M4/505 ,  H01M10/0525 ,  H01M4/525 ,  H01M4/02

Abstract: The present disclosure provides a cathode active material and a lithium ion electrochemical system including the same. A general formula of the cathode active material is as follows: z{xLi2MnO3*(1−x)LiRO2}*(1−z) LiaR′1-aOy, herein R and R′ independently include one or more metal ions, an oxidation valence state of the R is 3+, and an oxidation valence state of the R′ is 2+, herein, 0≤x≤0.25, 0

公开(公告)号：US10782272B2

公开(公告)日：2020-09-22

申请号：US16035725

申请日：2018-07-16

Applicant: Microvast Power Systems Co., Ltd.

Inventor： Bryan Yonemoto ,  Xiao Zhang ,  Wenjuan Liu Mattis ,  Zhifeng Zhang

IPC: G01N31/22 ,  G01N31/02 ,  B01J19/00 ,  B01J8/00 ,  C01G19/02 ,  C01F11/24 ,  C01G53/00

Abstract: An analytical method for precipitated particles using a co-precipitation reaction in includes feeding streams and a tracking metal into a reaction vessel; collecting a precipitated product containing the tracking metal from the reaction vessel in increments of time to obtain product samples; filtering each collected product sample to separate precipitated particles from filtrate; and performing elemental analysis for the tracking metal in the precipitated particles of each collected product sample and measuring a concentration of the tracking metal in the precipitated particles, to obtain a residence time distribution of the precipitated particles in the reaction vessel according to the concentration of the tracking metal in the precipitated particles. Therefore the preferred residence time of the precipitated particles in the reaction vessel can be ascertained, so that it is clear when the precipitated particles should be collected from the reaction vessel.