US 12,218,352 B2 · Lithium fluoride-containing coatings for cathode active materials in Li-ion batteries

Abstract

The disclosure provides a plurality of particles. Each particle may include a material comprising 0.95 to 1.30 mole fraction Li, at least 0.60 and less than 1.00 mole fraction Co, up to 10,000 ppm Al, 1.90 to 2.10 mole fraction O, and up to 0.30 mole fraction M, where M is at least one element selected from B, Na, Mg, P, Ti, Ca, V, Cr, Fe, Mn, Ni, Cu, Zn, Al, Sc, Y, Ga, Zr, Ru, Mo, La, Si, Nb, Ge, In, Sn, Sb, Te, and Ce. Each particle may also include a surface composition comprising a mixture of LiF and a metal fluoride. An amount of fluorine (F) is greater than 0 and less than or equal to 5000 ppm. The metal fluoride comprises a material selected from the group consisting of AlF3, CaF2, MgF2, and LaF2. The surface composition may also include a metal oxide comprising a material selected from the group consisting of TiO2, MgO, La2O3, CaO, and Al2O3. An amount of the metal oxide is greater than 0 and less than or equal to 20000 ppm.

Claims20

Dependent claims

A plurality of particles, each particle comprising:

a material comprising:
0.95 to 1.30 mole fraction Li;
at least 0.60 and less than 1.00 mole fraction Co;
up to 10,000 ppm Al;
1.90 to 2.10 mole fraction O;
and
up to 0.30 mole fraction M;
wherein M is at least one element selected from B, Na, Mg, P, Ti, Ca, V, Cr, Fe, Mn, Ni, Cu, Zn, Al, Sc, Y, Ga, Zr, Ru, Mo, La, Si, Nb, Ge, In, Sn, Sb, Te, and Ce;
and
a surface composition comprising:
a mixture of LiF and a metal fluoride, wherein an amount of fluorine (F) is 500-5000 ppm;
wherein the metal fluoride comprises a material selected from the group consisting of AlF3, CaF2, MgF2, and LaF2;
and
a metal oxide comprising a material selected from the group consisting of TiO2, MgO, La2O3, CaO, and Al2O3, wherein an amount of the metal oxide is 1000-20000 ppm.

11 more elements

Dependencies are inferred from the claim text.

Facts

Application

17/226,511Filed 9 Apr 2021 · us provisional application

Priority

9 Apr 2020

Published

US 2021/0320298 A114 Oct 2021

Granted

4 Feb 2025

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

H01M 4/366
Composites: as layered products
H01M 4/582
Of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures,…:…
H01M 4/0471
Processes of manufacture in general: involving thermal treatment, e.g. firing, sintering, backing particulate active material, thermal…
H01M 4/505
Of manganese: of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy

Lithium fluoride-containing coatings for cathode active materials in Li-ion batteries

Life of this patent

Lithium fluoride-containing coatings for cathode active materials in Li-ion batteries

Life of this patent

Abstract

Claims20