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Title:
LITHIUM METAL OXIDE, AND NEGATIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY HAVING SAME, AND MANUFATURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2016/148441
Kind Code:
A1
Abstract:
The present invention relates to a lithium metal oxide that has a surface on which a nickel oxide layer is formed, and that is represented by Chemical Formula LixMyOz (where M is one or more types selected from the group consisting of Ti, Sn, Cu, Pb, Sb, Zn, Fe, In, Al and Zr, and x, y and z are determined according to the oxidation number of M). The lithium metal oxide according to the present invention has a nickel oxide layer formed on the surface thereof, thereby forming a stable solid electrolyte interface film, can exhibit excellent electrochemical characteristics in the voltage region of 1V or less, can achieve a long life span, a high initial efficiency and output, and thus can be advantageously used for manufacturing a negative electrode active material for a lithium secondary battery, and a lithium secondary battery having the same. The lithium metal oxide of the present invention can be manufactured using a method for manufacturing a lithium metal oxide having a surface on which a nickel oxide layer is formed, the method comprising the steps of: (1) complexing a nickel precursor on the surface of the lithium metal oxide; and (2) calcining by heat-treating the lithium metal oxide having the nickel precursor complexed on the surface thereof which is obtained in step (1).

Inventors:
KIM YE RI (KR)
KANG YONG MOOK (KR)
CHO MI RU (KR)
KIM EUN KYUNG (KR)
LEE YONG JU (KR)
JO RAE HWAN (KR)
Application Number:
PCT/KR2016/002419
Publication Date:
September 22, 2016
Filing Date:
March 10, 2016
Export Citation:
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Assignee:
LG CHEMICAL LTD (KR)
DONGGUK UNIV INDUSTRY-ACADEMIC COOP FOUND (KR)
International Classes:
H01M4/36; H01M4/485; H01M4/525; H01M10/052
Foreign References:
KR100728783B12007-06-19
KR20130140395A2013-12-24
KR20110079025A2011-07-07
KR20140093529A2014-07-28
KR100889622B12009-03-20
Attorney, Agent or Firm:
BAE, KIM & LEE IP GROUP (KR)
특허법인 태평양 (KR)
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