US 11,777,091 B2 · Cathode slurry composition, cathode manufactured using same, and battery including same

Abstract

A positive electrode slurry composition, a positive electrode manufactured using the same, and a battery including the positive electrode. The positive electrode slurry composition includes a positive electrode active material, a binder, an alcohol, and water, wherein a content of the alcohol is in a range of 0.1 to 10% by weight, based on a total weight of the composition. The slurry composition for manufacturing a positive electrode has effects of highly improving the dispersibility of the positive electrode active material and the conductive material, decreasing the surface roughness of an electrode, and remarkably reducing a curling phenomenon in the electrode. Also, the slurry composition has an economic advantage in that a dispersing agent is not used or an amount of the dispersing agent used can be remarkably reduced.

Claims3

Dependent claims

A positive electrode slurry composition comprising:

a positive electrode active material;
a binder;
a conductive material;
and
a solvent consisting of a C1 to C5 alcohol and water,
wherein the composition comprises 10 to 78% by weight of the positive electrode active material, 1 to 50% by weight of the binder, and 0.1 to 10% by weight of the conductive material;
wherein the solvent consists of a content of the alcohol in a range of 0.1 to 10% by weight, with the balance being water, based on a total weight of the composition,
wherein the positive electrode active material is a S—C composite;
wherein the binder is a lithiated polyacrylic acid;
wherein the conductive material comprises vapor-grown carbon fibers (VGCFs);
wherein the C1 to C5 alcohol is 1-propanol;
and
wherein the composition is suitable for use in manufacturing a positive electrode for lithium-sulfur batteries.

10 more elements

Dependencies are inferred from the claim text.

Facts

Application

16/958,599Filed 11 Jan 2019

Priority

KR 10-2018-000365611 Jan 2018

Published

US 2021/0167385 A13 Jun 2021

Granted

3 Oct 2023

Term ends

Not estimatedThe source records don’t support an estimate.

Classification16 codes

H01M 4/583
Of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures,…:…
H01M 4/0404
Methods of deposition of the material: by coating on electrode collectors
H01M 4/13
Electrodes composed of, or comprising, active material: electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators;…
H01M 4/139
Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof: processes of manufacture

Cathode slurry composition, cathode manufactured using same, and battery including same

Life of this patent

Cathode slurry composition, cathode manufactured using same, and battery including same

Life of this patent

Abstract

Claims3