US 10,374,262 B2 · Protective cathode coatings for lithium-ion batteries

Abstract

Cathode coatings for lithium ion batteries, cathodes coated with the coatings, and lithium ion batteries incorporating the coated cathodes are provided. The coatings, which are composed of binary, ternary, and higher order metal oxides and/or metalloid oxides, can reduce the hydrofluoric acid (HF)-induced degradation of the electrolyte and/or cathodes, thereby improving the performance of lithium ion batteries, relative to lithium ion batteries that employ bare cathodes.

Claims31

Dependent claims

A coated cathode comprising:

an active cathode material for a lithium ion battery;
and
a coating on at least a portion of the active cathode material, wherein the coating comprises a borate selected from TaBO4, NbBO4, Ca5(BO3)3F, Mg3(BO3)2, and CaAlBO4.

Dependencies are inferred from the claim text.

Facts

Application

15/427,295Filed 8 Feb 2017 · us provisional application

Priority

8 Feb 2016

Published

US 2017/0229742 A110 Aug 2017

Granted

6 Aug 2019

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

H01M 4/525
Of nickel, cobalt or iron: of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g.…
H01M 4/131
Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof: electrodes based on…
H01M 4/366
Composites: as layered products
H01M 4/505
Of manganese: of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy

Protective cathode coatings for lithium-ion batteries

Life of this patent

Protective cathode coatings for lithium-ion batteries

Life of this patent

Abstract

Claims31