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:
Feb. 14, 2017
Filed:
Mar. 25, 2009
Yang-kook Sun, Seoul, KR;
Sung-woo OH, Seoul, KR;
Hyun-joo Bang, Seoul, KR;
Seung Min OH, Gumi-si, KR;
Yang-Kook Sun, Seoul, KR;
Sung-Woo Oh, Seoul, KR;
Hyun-Joo Bang, Seoul, KR;
Seung Min Oh, Gumi-si, KR;
Abstract
The present invention provides an olivine-type positive active material precursor for a lithium battery that includes MXOB(wherein M is one element selected from the group consisting of Fe, Ni, Co, Mn, Cr, Zr, Nb, Cu, V, Ti, Zn, Al, Ga, Mg, B, and a combination thereof, X is one element selected from the group consisting of P, As, Bi, Sb, and a combination thereof, B is one element selected from the group consisting of F, S, and a combination thereof, and 0≦z≦0.5) particles, and the precursor has a particle diameter of 1 to 20 μm, a tap density of 0.8 to 2.1 g/cm, and a specific surface area of 1 to 10 m/g. The olivine-type positive active material prepared using the olivine-type positive active material precursor has excellent crystallinity of particles, a large particle diameter, and a high tap density, and therefore shows excellent electrochemical characteristics and capacity per unit volume.