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US 11,699,807 B2Granted
Positive electrode material for lithium ion secondary batteries, positive electrode for lithium ion secondary batteries, and lithium ion secondary battery
AssigneeSumitomo Metal Mining Co., Ltd.
InventorsSatoru Oshitari, Kouji Oono, Tsutomu Nozoe
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Abstract
The positive electrode material for lithium ion secondary batteries includes a mixture including a positive electrode active material in which a length of a longest side of a primary particle is 1 nm or more and 1000 nm or less and a NASICON-type compound in which a length of a longest side of a primary particle is 1 nm or more and 1000 nm or less.
Claims12
A positive electrode material for lithium ion secondary batteries, comprising a mixture which includes:
- a positive electrode active material in which a length of a longest side of a primary particle of the active material is 1 nm or more and 1000 nm or less;
- and
- A NASICON-type compound in which a length of a longest side of a primary particle of the compound is 1 nm or more and 1000 nm or less,
- wherein, the positive electrode active material is at least one selected from a group consisting of Li3FePO4, Li Fe0.26Mn0.7Mg0.0349Co0.05Ca0.001PO4, and LiCoPO4, and
- the NASICON-type compound is represented by formula LiaAlbTi2-b(PO4)3, and
- a mixing ratio by mass of the positive electrode active material to the NASICON-type compound is from 99:1 to 90.5:9.5, wherein 0.8≤a≤1.5 and 0≤b≤0.5.
3 more elements
Dependencies are inferred from the claim text.