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:
Apr. 04, 2017
Filed:
Dec. 10, 2012
Samsung Sdi Co., Ltd., Yongin-si, Gyeonggi-do, KR;
Jung-Joon Park, Yongin-si, KR;
Samsung SDI Co., Ltd., Yongin-si, KR;
Abstract
A positive active material including a compound represented by LiMMeO. A surface part of a particle of the positive active material has a mole ratio [Me/M] (A) of element represented by Me to element represented by M in LiMMeOof 0.05≦A≦0.60; the entire particle has a mole ratio [Me/M] (B) of element represented by Me to element represented by M in LiMMeOof 0.003≦B≦0.012; and element represented by Me has a concentration difference of between two positions of less than or equal to about 0.02 wt % in an inner part of the particle. In LiMMeO, −0.2≦x≦0.2, 0<k≦0.05 M is one selected from Ni, Mn, Co, and a combination thereof, Me is one selected from Al, Mg, Ti, Zr, B, Ni, Mn, and a combination thereof, and M is not the same element as Me or does not include the same element as Me.