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.:
Date of Patent:
Oct. 01, 2019
Filed:
Oct. 14, 2015
Lg Chem, Ltd., Seoul, KR;
Su Min Lee, Daejeon, KR;
Sun Young Shin, Daejeon, KR;
Su Yeon Lee, Daejeon, KR;
Eun Kyung Kim, Daejeon, KR;
LG Chem, Ltd., , KR;
Abstract
The present invention relates to a negative electrode active material for secondary batteries, and a negative electrode, an electrode assembly and a secondary battery including the same. The negative electrode active material includes polyhedral crystalline carbon, a first surface treatment layer disposed on a surface of the crystalline carbon and including amorphous carbon or oxidized crystalline carbon, and a second surface treatment layer disposed on a surface of the first surface treatment layer and including a polyacrylic acid ester copolymer, thereby improving output characteristics of batteries based on increased mobility of electrons resulting from surface-to-surface contact between active materials, controlling reactivity with an electrolyte, and enhancing high-temperature storage performance of batteries.