Cathode material and preparation method thereof, and battery
AssigneeBtr (Jiangsu) New Material Technology Co., Ltd
InventorsWansheng ZHANG, Xiong SONG, Jinlong ZHANG, Xiaozhen WU, Shunyi YANG
Life of this patent
Estimating the term…
Abstract
A cathode material and a preparation method thereof, and a lithium ion battery are provided. A volume particle size distribution width of the cathode material is Span, Span = D 9 0 - D 10 D 5 0 , and a dissociation degree of the cathode material is β, β = D 5 0 D n 5 0 , wherein the cathode material meets the following relationships: 1.1≤β<1.65, and 0.9≤Span≤1.53.
Claims20
A cathode material, wherein a number distribution median particle size of the cathode material is Dn50 μm, a volume particle size distribution width of the cathode material to Span,
- Span
- =
- D
- v
-
- 90
- -
- D
- v
-
- 10
- D
- v
-
- 50
- ,
- a dissociation degree of the cathode material is β,
- β
- =
- D
- v
-
- 50
- D
- n
-
- 50
- ,
- a true density of the cathode material is ρ g/cm3, an angle of repose of the cathode material is α rad, and Pequivalent is an equivalent density calculation value of the cathode material, with the unit in g/cm3, wherein the cathode material meets at least one of the following relationships:
- 1
- .
- 1
- ≤
- β
- <
- 1.65
- ,
- and
- 0.9
- ≤
- Span
- ≤
- 1.53
- ;
- or
- 1
- )
- P
- equivalent
- =
- Span
- ×
- D
- n
-
- 50
- ×
- ρ
- β
- ×
- α
- ×
- 0
- .
- 0
-
- 8
-
- 9
- +
- 2.5
- ,
- and
- 3.2
- ≤
- P
- equivalent
- ≤
- 3.7
- .
- 2
- )
Dependencies are inferred from the claim text.