Positive electrode active material and preparation method thereof, positive electrode plate, secondary battery, battery module, battery pack, and electric apparatus
US-2024429384-A1 · Dec 26, 2024 · US
Cathode active material and Lithium-ion electrochemical system thereof
US2020119349A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2020119349-A1 |
| Application number | US-201916581802-A |
| Country | US |
| Kind code | A1 |
| Filing date | Sep 25, 2019 |
| Priority date | Sep 25, 2018 |
| Publication date | Apr 16, 2020 |
| Grant date | — |
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- Title
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- Abstract
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- First independent claim
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- CPC / IPC classifications
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- Citations and related patents
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Abstract
Official abstract text for this publication.
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.
First claim
Opening claim text (preview).
What is claimed is: 1 . A lithium-ion cathode material, wherein the lithium-ion cathode material is described by xLiMO 2 *(1-x)(Li a M′ 1-a )O y , 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. 2 . The lithium-ion cathode material as claimed in claim 1 , wherein M and M′ independently comprises one or more metal ions selected from Ni, Mn, Co, Al, Mg, Nb, Mo, or Zr. 3 . The lithium-ion cathode material as claimed in claim 2 , wherein neither M nor M′ comprises metal ion of Co. 4 . The lithium-ion cathode material as claimed in claim 2 , wherein M and/or M′ comprises metal ion of Co, and a molar ratio of metal ion of Co to M and M′ is Co/(M+M′)<0.1. 5 . The lithium-ion cathode material as claimed in claim 4 , wherein the molar ratio of metal ion of Co to M and M′ is Co/(M+M′)<0.05. 6 . The lithium-ion cathode material as claimed in claim 1 , wherein a molar ratio of metal ion Li to M and M′ is Li/(M+M′)>0.95. 7 . The lithium-ion cathode material as claimed in claim 6 , wherein the molar ratio of metal ion Li to M and M′ is 1.2>Li/(M+M′)>1. 8 . The lithium-ion cathode material as claimed in claim 2 , wherein M and/or M′ comprises metal ion of Ni, and a molar ratio of metal ion of Ni to M and M′ is Ni/(M+M′)>0.5. 9 . The lithium-ion cathode material as claimed in claim 8 , wherein the molar ratio of metal ion of Ni to M and M′ is Ni/(M+M′)>0.7. 10 . A Lithium-ion electrochemical system, comprises a cathode electrode, wherein the cathode electrode comprises the lithium-ion cathode material as claimed in claim 1 . 11 . The lithium-ion cathode material as claimed in claim 2 , wherein a molar ratio of metal ion Li to M and M′ is Li/(M+M′)>0.95. 12 . The lithium-ion cathode material as claimed in claim 3 , wherein a molar ratio of metal ion Li to M and M′ is Li/(M+M′)>0.95. 13 . The lithium-ion cathode material as claimed in claim 4 , wherein a molar ratio of metal ion Li to M and M′ is Li/(M+M′)>0.95. 14 . The lithium-ion cathode material as claimed in claim 5 , wherein a molar ratio of metal ion Li to M and M′ is Li/(M+M′)>0.95. 15 . The lithium-ion cathode material as claimed in claim 3 , wherein M and/or M′ comprises metal ion of Ni, and a molar ratio of metal ion of Ni to M and M′ is Ni/(M+M′)>0.5. 16 . The lithium-ion cathode material as claimed in claim 4 , wherein M and/or M′ comprises metal ion of Ni, and a molar ratio of metal ion of Ni to M and M′ is Ni/(M+M′)>0.5. 17 . The lithium-ion cathode material as claimed in claim 5 , wherein M and/or M′ comprises metal ion of Ni, and a molar ratio of metal ion of Ni to M and M′ is Ni/(M+M′)>0.5.
Assignees
Inventors
Classifications
- H01M4/525Primary
of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy · CPC title
- H01M4/505Primary
of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy · CPC title
Positive electrodes · CPC title
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy (H01M4/505, H01M4/525 take precedence) · CPC title
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Frequently asked questions
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- What does patent US2020119349A1 cover?
- 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.
- Who is the assignee on this patent?
- Microvast Power Systems Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/525. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Apr 16 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).