Title:
CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, MANUFACTURING METHOD THEREFOR, AND LITHIUM SECONDARY BATTERY INCLUDING SAME
Document Type and Number:
WIPO Patent Application WO/2016/175554
Kind Code:
A1
Abstract:
The present invention relates to a cathode active material for a lithium secondary battery, a manufacturing method therefor, and a lithium secondary battery including the same and, specifically, to a cathode active material for a secondary battery, a manufacturing method therefor, and a lithium secondary battery including the same, the cathode active material comprising: lithium transition metal oxide particles represented by chemical formula 1 below; and lithium metal phosphate nanoparticles represented by chemical formula 2 below, arranged on the surface of the lithium transition metal oxide particles.
[Chemical formula 1] Li(1+a)(Ni1-b-cMbCoc)O2: In chemical formula 1, M is at least one metal selected from the group consisting of Mn, Al, Cu, Fe, Mg, Cr, Sr, V, Sc, and Y, and 0≤a≤0.2, 0≤b≤1, 0≤c≤1. [Chemical formula 2] Li1+xM'xM''2-x(PO4)3: In chemical formula 2, M' is Al, Y, Cr, or Ca, and M'' is Ge, Ti, Sn, Hf, Zn, or Zr, and 0≤x≤0.5.
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Inventors:
CHOI JI HOON (KR)
JUN IN KOOK (KR)
CHO SEUNG BEOM (KR)
JUN IN KOOK (KR)
CHO SEUNG BEOM (KR)
Application Number:
PCT/KR2016/004409
Publication Date:
November 03, 2016
Filing Date:
April 27, 2016
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
H01M4/36; H01M4/131; H01M4/1391; H01M4/525; H01M4/58; H01M10/052
Foreign References:
| KR20140098433A | 2014-08-08 |
Other References:
MORIMOTO, H. ET AL.: "Preparation of Lithium Ion Conducting Solid Electrolyte of NASICON-Type Li 1+xAlxTi2-x(PO4)3(x= 0.3) Obtained by Using the Mechanochemical Method and its Application as Surface Modification Materials of LiCoO2 Cathode for Lithium Cell", JOURNAL OF POWER SOURCES, vol. 240, 2013, pages 646 - 643, XP028577184
WU, X. ET AL.: "Synthesis and Characterization of Li1.3Al0.3Ti1.7(P04)3-coated LiMn2O4 by Wet Chemical Route", RARE METALS, vol. 28, no. 2, 2009, pages 122 - 126, XP055212158
WU, X. ET AL.: "Synthesis of Li1.3Al0.3Ti1.7(PO4)3 by Sol-gel Technique", MATERIALS LETTERS, vol. 58, no. 7, 2004, pages 1227 - 1230, XP004486707
CHO, J. ET AL.: "Comparison of Overcharge Behavior of AlPO4-coated LiCoO2 and LiNi0.8Co0.1Mn0.1O2 Cathode Materials in Li-Ion Cells", JOURNAL OF THE ELECTROCHEMICAL SOCIETY, vol. 151, no. 10, 2004, pages A1707 - A1711, XP055154222
WU, X. ET AL.: "Synthesis and Characterization of Li1.3Al0.3Ti1.7(P04)3-coated LiMn2O4 by Wet Chemical Route", RARE METALS, vol. 28, no. 2, 2009, pages 122 - 126, XP055212158
WU, X. ET AL.: "Synthesis of Li1.3Al0.3Ti1.7(PO4)3 by Sol-gel Technique", MATERIALS LETTERS, vol. 58, no. 7, 2004, pages 1227 - 1230, XP004486707
CHO, J. ET AL.: "Comparison of Overcharge Behavior of AlPO4-coated LiCoO2 and LiNi0.8Co0.1Mn0.1O2 Cathode Materials in Li-Ion Cells", JOURNAL OF THE ELECTROCHEMICAL SOCIETY, vol. 151, no. 10, 2004, pages A1707 - A1711, XP055154222
Attorney, Agent or Firm:
BAE, KIM & LEE IP GROUP (KR)
특허법인 태평양 (KR)
특허법인 태평양 (KR)
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