US 2022/0013762 A1 · LITHIUM POSITIVE ELECTRODE ACTIVE MATERIAL

Abstract

The invention relates to a lithium positive electrode active material for a high voltage secondary battery: the lithium positive electrode active material comprising at least 94 wt % spinel, where the spinel has a net chemical composition of LixNiyMn2-yO4, wherein: 0.95≤x≤1.05; 0.43≤y≤0.47. The lithium positive electrode active material is made up of particles characterized by one or more of the following parameter ranges: the particles have average aspect ratio below 1.6, the particles have a roughness below 1.35, particles have a circularity above 0.55. Then invention also relates to a process for the preparation of the lithium positive electrode active material as well as a secondary battery comprising the lithium positive electrode active material.

Claims30

Dependent claims

A lithium positive electrode active material for a high voltage secondary battery, said lithium positive electrode active material comprising at least 94 wt % spinel, said spinel having a net chemical composition of LixNiyMn2-yO4, wherein:

0.95≤x≤1.05;
0.43≤y≤0.47;
and
wherein said lithium positive electrode active material is made up of particles, said particles being characterized by one or more of the following parameter ranges:
the particles have average aspect ratio below 1.6, the particles have a roughness below 1.35, particles have a circularity above 0.55.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

17/289,313Filed 18 Dec 2019

Priority

DK PA 2018 0102919 Dec 2018

Published

13 Jan 2022

Term ends

Not estimatedThe source records don’t support an estimate.

Classification17 codes

C01G 53/52
Containing manganese: of the type 2-, e.g. Li2O4 or Li2O4
H01M 4/131
Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof: electrodes based on…
C01G 45/1242
Manganates or manganites with trivalent manganese, tetravalent manganese or mixtures thereof: of the type -, e.g. LiMn2O4 or LiO4
C01G 53/54
Containing manganese: of the type -, e.g. LiO4 or LiO4

Lithium positive electrode active material

Life of this patent

Lithium positive electrode active material

Life of this patent

Abstract

Claims30