Method for Producing Positive Electrode Active Material for Lithium Secondary Battery
Summary
The European Patent Office has published a patent application by LG Chem, Ltd. for a method of producing positive electrode active material for lithium secondary batteries. The method involves washing and heat-treating a lithium transition metal oxide with a metal phosphate compound to form a surface coating layer.
What changed
This document is a patent application published by the European Patent Office (EPO) detailing a novel method for producing positive electrode active material for lithium secondary batteries. The method, developed by LG Chem, Ltd., involves washing a lithium transition metal oxide and then solid-phase mixing it with a metal phosphate compound (melting point <= 500°C) followed by heat treatment to create a protective coating on the active material's surface. This process aims to enhance battery performance and longevity.
While this is a patent publication and not a regulatory rule, it signifies potential future technological advancements in battery materials. Companies involved in battery manufacturing, particularly those producing lithium-ion batteries, should be aware of such patented technologies. Compliance officers in the battery sector may need to monitor the commercialization and potential licensing requirements related to this patented method, especially if their own R&D or manufacturing processes approach similar techniques.
Source document (simplified)
METHOD FOR PRODUCING POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND POSITIVE ELECTRODE POSITIVE MATERIAL PRODUCED THEREBY
Search Report EP4668397A3 Kind: A3 Mar 18, 2026
Applicants
LG Chem, Ltd.
Inventors
JUNG, Won Sig, PARK, Hyun Ah, YOON, Yeo June, LEE, Kang Hyeon
Abstract
The present invention relates to a method for producing a positive electrode active material, the method including washing a lithium transition metal oxide with a washing solution, and solid-phase mixing the washed lithium transition metal oxide and a metal phosphate compound having a melting point of 500°C or lower, followed by performing heat treatment to form a coating layer on the surface of the lithium transition metal oxide.
IPC Classifications
C01G 53/00 20250101AFI20260209BHEP C01B 25/45 20060101ALI20260209BHEP H01M 4/36 20060101ALI20260209BHEP H01M 4/58 20100101ALI20260209BHEP H01M 4/525 20100101ALI20260209BHEP H01M 4/02 20060101ALI20260209BHEP H01M 4/1391 20100101ALI20260209BHEP H01M 4/04 20060101ALI20260209BHEP H01M 4/131 20100101ALI20260209BHEP H01M 4/136 20100101ALI20260209BHEP H01M 4/62 20060101ALI20260209BHEP H01M 10/0525 20100101ALI20260209BHEP
Designated States
AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LI, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR
Named provisions
Related changes
Source
Classification
Who this affects
Taxonomy
Browse Categories
Get Energy alerts
Weekly digest. AI-summarized, no noise.
Free. Unsubscribe anytime.
Get alerts for this source
We'll email you when ChangeBridge: EPO Bulletin - Batteries (H01M) publishes new changes.