Title:
A cathode active material for lithium secondary batteries, and a manufacturing method for the same
Document Type and Number:
Japanese Patent JP6177345
Kind Code:
B2
Abstract:
Provided are an anode active material for a lithium secondary battery including a silicon-based composite formed of silicon (Si) and crystalline SiO 2 , wherein the Si and crystalline SiO 2 are in the form of grains, a method of preparing the same, and a lithium secondary battery including the anode active material. Since an anode active material according to an embodiment of the present invention includes a silicon-based composite including Si and SiO 2 in a grain state and the SiO 2 is crystalline SiO 2 , the reaction between amorphous SiO 2 and lithium in an electrolyte may be excluded. Thus, since the crystalline SiO 2 is included in the silicon-based composite, excellent capacity characteristics of a secondary battery may be maintained and initial efficiency and life characteristics may be improved when the silicon-based composite is used as an anode active material.
Inventors:
Kim, Hyun-Chul
Lee, Young-ju
Kim, Eun-Kyun
Lee, Young-ju
Kim, Eun-Kyun
Application Number:
JP2015545404A
Publication Date:
August 09, 2017
Filing Date:
October 31, 2014
Export Citation:
Assignee:
LG HAUSYS,LTD.
International Classes:
H01M4/38; C01B33/033; C01B33/12; H01M4/36
Domestic Patent References:
| JP2009164104A | ||||
| JP2009032693A | ||||
| JP2006092969A | ||||
| JP2014026950A |
Foreign References:
| US20090010833 |
Other References:
Jung-In Lee et al,"Highly stable Si-based multicomponent anodes for practical use in lithium-ion batteries",ENERGY & ENVIRONMENTAL SCIENCE,2012年 5月 3日,vol.5, no.7,pp.7878-7882
Attorney, Agent or Firm:
Takeshi Katata
Matsuno Chihiro
Matsuno Chihiro
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