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.

Date of Patent:
Mar. 04, 2014

Filed:

Sep. 28, 2009
Applicants:

Young-min Choi, Osan-si, KR;

Kyung-ho Kim, Cheonan-si, KR;

Gue-sung Kim, Yongin-si, KR;

Inventors:

Young-min Choi, Osan-si, KR;

Kyung-ho Kim, Cheonan-si, KR;

Gue-sung Kim, Yongin-si, KR;

Assignee:

Samsung SDI Co., Ltd., Yongin-si, KR;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/13 (2010.01);
U.S. Cl.
CPC ...
Abstract

Composite cathode active materials having a large diameter active material and a small diameter active material are provided. The ratio of the average particle diameter of the large diameter active material to the average particle diameter of the small diameter active material ranges from about 6:1 to about 100:1. Mixing the large and small diameter active materials in a proper weight ratio improves packing density Additionally, including highly stable materials and highly conductive materials in the composite cathode active materials improves volume density, discharge capacity and high rate discharge capacity.


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Choi, Young-min. (2014). Cathode active material, method of preparing the same, and cathode and lithium battery containing the material (U.S. Patent No. 8663846). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8663846

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