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. 07, 2015
Filed:
Jul. 15, 2008
Jungjoon Park, Yongin-si, KR;
Suho Song, Yongin-si, KR;
Jungjoon Park, Yongin-si, KR;
Suho Song, Yongin-si, KR;
Samsung SDI Co., Ltd., Yongsin-si, KR;
Abstract
A positive electrode active material for a lithium secondary battery, the material represented by the formulas: LiNiCoAlOor LiNiCoMnO(0.1<x≦0.15 and 0.03<y<0.1), and whose X-ray diffraction peak intensity ratio 1(2θ=45 degrees)/I(2θ=18 degrees) of an X-ray diffraction peak intensities found in the vicinity of an X-ray diffraction-scanning angle 2θ of about 45 degrees, to an X-ray diffraction peak intensity found in the vicinity of an X-ray diffraction-scanning angle 2θ of about 18 degrees, is in the range of from 46% to 51%. The positive electrode active material is fabricated by mixing NiCoAlOor NiCoMnO(0.1<x≦0.15 and 0.03<y<0.1) with lithium hydrates (LiOH.HO); and calcinating the mixture at a temperature of 750° C., for more than 30 hrs, under an oxygen atmosphere.