Patent number: 9954225
Abstract: Provided is a positive electrode material for a lithium battery with an atomic ratio expressed by the formula (I) Lia(MxMn2-x)(O4-yZy) for 0.8?a?1.2, 0?x?1 and 0?y?1 in which M is one or more of Li, Na, K, Ca, Mg, Al, Ti, Sc, Ge, V, Cr, Zr, Co, Ni, Zn, Cu, La, Ce, Mn, Hf, Nb, Ta, Mo, W, Ru, Ag, Sn, Pb and Si and Z is one or more of OH, halogens, N, P, S and O, and the primary particles of the positive electrode material have a spheroidal topography. The adjacent (111) family planes of the primary particles are connected by curved surfaces without obvious edges. A preparing method of a positive electrode material for a lithium battery and a lithium battery are also provided. The positive electrode material of the present invention provides a good high-temperature cycling performance and filling capability.
Type:
Grant
Filed:
May 23, 2011
Date of Patent:
April 24, 2018
Assignees:
NINGBO INSTITUTE OF MATERIALS TECHNOLOGY AND ENGINEERING, CHINESE ACADEMY OF SCIENCES, HUBEI WANRUN NEW ENERGY TECHNOLOGY DEVELOPMENT CO. LTD
Inventors:
Yonggao Xia, Zhaoping Liu, Yaletu Saixi