Title:
MANUFACTURING METHOD OF LITHIUM-TITANIUM COMPOSITE OXIDE IN WHICH DIFFERENT METALS ARE DOPED, AND LITHIUM-TITANIUM COMPOSITE OXIDE MANUFACTURED THEREBY IN WHICH DIFFERENT METALS ARE DOPED
Document Type and Number:
WIPO Patent Application WO/2014/189209
Kind Code:
A1
Abstract:
The present invention relates to a manufacturing method of a lithium-titanium composite oxide in which two different metals are doped, and a lithium-titanium composite oxide manufactured thereby in which two different metals are doped. More specifically, the present invention relates to a manufacturing method of a lithium-titanium composite oxide in which different metals are doped, thereby adjusting the content of impurities by mixing two different metals in a solid phase after adjusting the mixing ratio of the two different metals, grinding the mixture, and spray-drying the ground mixture, and to a lithium-titanium composite oxide manufactured thereby in which different metals are doped. By doping two different metals on the surface of a lithium-titanium composite oxide after adjusting the ratio of the two different metals to be appropriate, the present invention reduces the content of rutile type titanium dioxide, anatase type titanium dioxide, and Li2TiO3, which have been included as impurities in the prior art, thereby manufacturing titanium dioxide having excellent capacity characteristics and structural characteristics. In addition, a battery comprising such titanium dioxide exhibits excellent battery characteristics in which the early charge/discharge efficiency and the rate capability are high.
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Inventors:
CHOI SU BONG (KR)
CHOI JUN HWA (KR)
KO HYOUNG SHIN (KR)
LEE JAE AN (KR)
CHOI JUN HWA (KR)
KO HYOUNG SHIN (KR)
LEE JAE AN (KR)
Application Number:
PCT/KR2014/003060
Publication Date:
November 27, 2014
Filing Date:
April 09, 2014
Export Citation:
Assignee:
POSCO ES MATERIALS CO LTD (KR)
International Classes:
B01J6/00; C01G23/04; C01D15/02
Foreign References:
| KR20110114392A | 2011-10-19 | |||
| JP2002145619A | 2002-05-22 |
Other References:
YI, TING-FENG ET AL.: "Spinel Li4Ti5-xZrxO12 (0?x?0.25) materials as high-performance anode materials for lithium-ion batteries", JOURNAL OF ALLOYS AND COMPOUNDS, vol. 558, 16 January 2013 (2013-01-16), pages 11 - 17, XP028986898, DOI: 10.1016/J.JALLCOM.2013.01.018
LI, XING ET AL.: "Structural and electrochemical performances of Li4Ti5-xZrxO12 as anode material for lithium-ion batteries", JOURNAL OF ALLOYS AND COMPOUNDS, vol. 487, 1 November 2009 (2009-11-01), pages L12 - L17, XP055052090, DOI: 10.1016/J.JALLCOM.2009.07.176
WANG, ZHENHONG ET AL.: "Synthesis and electrochemical performances of Li4Ti4.95A10.05O12/C as anode material for lithium-ion batteries", JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, vol. 72, 17 March 2011 (2011-03-17), pages 773 - 778, XP028211410, DOI: 10.1016/J.JPCS.2011.03.013
See also references of EP 3000787A4
LI, XING ET AL.: "Structural and electrochemical performances of Li4Ti5-xZrxO12 as anode material for lithium-ion batteries", JOURNAL OF ALLOYS AND COMPOUNDS, vol. 487, 1 November 2009 (2009-11-01), pages L12 - L17, XP055052090, DOI: 10.1016/J.JALLCOM.2009.07.176
WANG, ZHENHONG ET AL.: "Synthesis and electrochemical performances of Li4Ti4.95A10.05O12/C as anode material for lithium-ion batteries", JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, vol. 72, 17 March 2011 (2011-03-17), pages 773 - 778, XP028211410, DOI: 10.1016/J.JPCS.2011.03.013
See also references of EP 3000787A4
Attorney, Agent or Firm:
KIM, TAE SUN (KR)
김태선 (KR)
김태선 (KR)
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