US 2018/0006289 A1 · POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY AND METHOD FOR PREPARING THE SAME

Abstract

Disclosed is a positive electrode for a lithium secondary battery which uses a positive electrode active material containing secondary particles with a relatively weak particle strength to improve the adhesion between a positive electrode mixture layer and a current collector, and the positive electrode includes a positive electrode current collector; a primer coating layer including a first polymer binder and a first conductive material, having surface roughness (Ra) of 85 nm to 300 nm and formed on at least one surface of the positive electrode current collector; and a positive electrode mixture layer formed on an upper surface of the primer coating layer and including a positive electrode active material containing secondary particles with a compressive breaking strength of 1 to 15 MPa, a second polymer binder and a second conductive material.

Claims11

Dependent claims

A positive electrode for a lithium secondary battery, comprising:

a positive electrode current collector;
a primer coating layer including a first polymer binder and a first conductive material, having surface roughness (Ra) of 85 nm to 300 nm and formed on at least one surface of the positive electrode current collector;
and
a positive electrode mixture layer formed on an upper surface of the primer coating layer and including a positive electrode active material containing secondary particles with a compressive breaking strength of 1 to 15 MPa, a second polymer binder and a second conductive material.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

15/636,920Filed 29 Jun 2017

Priority

KR 10-2016-00836541 Jul 2016

Published

4 Jan 2018

Term ends

Not estimatedThe source records don’t support an estimate.

Classification18 codes

H01M 4/04
Electrodes composed of, or comprising, active material: processes of manufacture in general
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

Positive electrode for lithium secondary battery and method for preparing the same

Life of this patent

Positive electrode for lithium secondary battery and method for preparing the same

Life of this patent

Abstract

Claims11