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Title:
ANODE ACTIVE MATERIAL FOR SECONDARY BATTERY, AND SECONDARY BATTERY COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2017/164650
Kind Code:
A1
Abstract:
The present invention provides an anode active material for a secondary battery, and a secondary battery comprising the same, the anode active material comprising: a core containing lithium titanium oxide; and a surface treatment layer located on the surface of the core, wherein the surface treatment layer comprises boron-containing lithium oxide in an amount such that a boron content becomes a molar ratio of 0.002 to 0.02 per 1 mole of lithium titanium oxide, and upon titrating 2 g of the anode active material with 0.1 M HCl at a pH of 5 or less, a titration amount is 0.9 to 1.5 ml. The anode active material may exhibit an excellent capacity recovery rate and output characteristics when applied to a battery, and can prevent the decomposition of an electrolyte, thereby reducing gas generation.

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Inventors:
PARK SUNG BIN (KR)
LEE DONG HUN (KR)
JEON HYE LIM (KR)
JUNG WANG MO (KR)
KANG SEONG HOON (KR)
Application Number:
PCT/KR2017/003088
Publication Date:
September 28, 2017
Filing Date:
March 22, 2017
Export Citation:
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Assignee:
LG CHEMICAL LTD (KR)
International Classes:
H01M4/36; H01M4/131; H01M4/485; H01M10/0525
Foreign References:
KR101140866B12012-05-03
KR20110040478A2011-04-20
KR20080112809A2008-12-26
KR20010087559A2001-09-21
KR20140098152A2014-08-07
Other References:
See also references of EP 3312914A4
None
Attorney, Agent or Firm:
BAE, KIM & LEE IP GROUP (KR)
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