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:
Jul. 17, 2018
Filed:
Aug. 16, 2013
SK Innovation Co., Ltd., Seoul, KR;
Unist Academy-industry Research Corporation, Ulsan, KR;
Jeong Soo Kim, Daejeon, KR;
Young Shol Kim, Daejeon, KR;
Je Hyun Chae, Daejeon, KR;
Hee Young Sun, Daejeon, KR;
Kyu Tae Lee, Ulsan, KR;
Seung Hee Woo, Guri-si, KR;
Kwang Ho Ha, Daegu, KR;
SK Innovation Co., Ltd., Seoul, KR;
UNIST (Ulsan National Institute of Science and Technology), Ulsan, KR;
Abstract
Provided is a cathode active material for a secondary battery, specifically, a cathode active material for a secondary battery including sodium transition metal pyrophosphate satisfying NaAMM(PO), which has an advantage of structural stability due to a strong P—O bond of sodium transition metal phosphate having an olivine structure, and also performs proper intercalation and deintercalation of Na ions having a large ion radius, thereby significantly improving reversibility during charging and discharging, and a charge and discharge rate.