公开(公告)号：US20230147558A1

公开(公告)日：2023-05-11

申请号：US17521882

申请日：2021-11-09

Applicant: Microvast Power Systems Co., Ltd. ,  Microvast, Inc.

Inventor： Ting GUO ,  Xianglian WANG ,  Xiao ZHANG ,  Jiangping YI ,  Wenjuan Liu MATTIS

IPC: H01M4/583 ,  H01M4/04 ,  H01M10/0525 ,  H01M4/133

CPC classification number: H01M4/583 ,  H01M4/0471 ,  H01M10/0525 ,  H01M4/133 ,  H01M2004/027

Abstract: A negative electrode material includes a dopant containing a first dopant and a second dopant, the first dopant contains a boron element, and the second dopant contains at least one selected from a group consisting of a nitrogen element, an oxygen element, a fluorine element, a phosphorus element, and a sulfur element. Two or more types of dopants are added in the particle producing process, so that the negative electrode material prepared has excellent high and low temperature cycle performance and rate performance. Furthermore, a carbonization coating process is omitted which is compatible with the preparation process of the conventional graphite negative electrode, thus the preparation process is simpler, the equipment required is less, and the cost is lower. A preparation method thereof is provided as well.

公开(公告)号：US20220278326A1

公开(公告)日：2022-09-01

申请号：US17744631

申请日：2022-05-14

Applicant: Microvast Power Systems Co., Ltd.

Inventor： Bryan YONEMOTO ,  Karima LASRI ,  Xiao ZHANG

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

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+, x is selected from 0.25 to 1, a is selected from 0 to 0.75, and y is selected from 0.625 to 1.

公开(公告)号：US20210159487A1

公开(公告)日：2021-05-27

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 ,  H01M4/525 ,  H01M10/0525

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