Patent · US Active

Positive active material for rechargeable lithium battery, method of preparing the same, and rechargeable lithium battery including the same

US10566612B2 · kind B2 · utility

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13Claims

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Assignee

UNIST(ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY) · KR

Inventor

Jaephil Cho · Ulsan, KR

Key dates

Filing date	Jun 15, 2015
Grant date	Feb 18, 2020
Priority date	—
Expiry date	Apr 27, 2036

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A positive active material for a rechargeable lithium battery, a method of preparing the same, and a rechargeable lithium battery including the same are disclosed, and the positive active material for a rechargeable lithium battery includes: a layered lithium composite oxide core; a first coating layer on the surface of the core and magnesium doped at a lithium site in the core; a NiO-phase second coating layer on the first coating layer wherein the NiO-phase has a rock salt structure; and a third coating layer on the second coating layer and including lithium magnesium phosphate.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.