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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 6569569 B1

PDFFull Text
Date of Patent:
May. 27, 2003

Filed:

Jun. 15, 2000

Positive active material for lithium secondary batteries and method of preparing the same

Applicant:
Inventors:

Ho-Jin Kweon, Cheonan-si, KR;

Hyun-Sook Jung, Cheonan-si, KR;

Geun-Bae Kim, Cheonan-si, KR;

Yong-Chul Park, Cheonan-si, KR;

Wan-Seog Oh, Cheonan-si, KR;

Assignee:

Samsung SDI Co., Ltd., , KR;

Attorney:

Blakely Sokoloff Taylor & Zafman

Primary Examiner:

Carol Chaney

Assistant Examiner:

Tracy Dove

Int. Cl.
CPC ...
H01M 4/36 ; H01M 4/04 ; H01M 4/48 ; H01M 4/52 ;
U.S. Cl.
CPC ...
H01M 4/36 ; H01M 4/04 ; H01M 4/48 ; H01M 4/52 ;
Abstract

Disclosed is a positive active material for a lithium secondary battery having high capacity and long durability properties, and particularly to a powder of LiaNi1&minus;x&minus;yCoxMyO2&minus;zFz and LiaNi1&minus;x&minus;yCoxMyO2&minus;zSz (where M is a metal selected from the group consisting of Al, Mg, Sr, La, Ce, V, and Ti, and wherein 0&lE;x<0.99, 0.01&lE;y&lE;0.1, 0.01&lE;z&lE;0.1, and 1.00&lE;a&lE;1.1) an oxygen in LiaNi1&minus;x&minus;yCoxMyO2 is substituted with F or S whereby the durability, capacity and structural safety of the positive active material is increased.

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Kweon, Ho-Jin. (2003). Positive active material for lithium secondary batteries and method of preparing the same (U.S. Patent No. 6569569). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6569569

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