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:
Aug. 19, 2025
Filed:
Jan. 06, 2022
SK on Co., Ltd., Seoul, KR;
Yong Seok Lee, Daejeon, KR;
Jae Yun Min, Daejeon, KR;
Jae Ram Kim, Daejeon, KR;
Jung Hwan Kim, Daejeon, KR;
Sang Won Bae, Daejeon, KR;
Ji Hee Bae, Daejeon, KR;
Myung Ro Lee, Daejeon, KR;
Jae Yeong Lee, Daejeon, KR;
SK On Co., Ltd., Seoul, KR;
Abstract
An anode for a secondary battery includes an anode current collector, and an anode active material layer including a first anode active material layer and a second anode active material layer sequentially stacked from a surface of the anode current collector. Each of the first anode active material layer and the second anode active material layer includes a carbon-based active material and a silicon-based active material as an anode active material, and a carbon nanotube as a conductive material. A content of the silicon-based active material in the second anode active material layer is greater than a content of the silicon-based active material in the first anode active material layer. A Raman R value of the carbon nanotube included in the second anode active material layer is smaller than a Raman R value of the carbon nanotube included in the first anode active material layer.