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Patent Searching and Data


Title:
SECONDARY BATTERY AND METHOD OF MANUFACTURING THE SAME
Document Type and Number:
WIPO Patent Application WO/2018/008549
Kind Code:
A1
Abstract:
There is provided a secondary battery including a cathode, an anode including an anode active material layer and a coating film, and an electrolytic solution. The anode active material layer includes a titanium-containing compound, and a surface of the anode active material layer is coated with the coating film. The electrolytic solution includes one or more of unsaturated cyclic carbonate esters. Porosity of a portion of the anode active material layer measured with use of a mercury intrusion technique is within a range from 30% to 50% both inclusive. The portion of the anode active material layer is cut together with a portion of the coating film from a surface of the coating film to a depth of 10 μm.

Inventors:
ASAKAWA YUICHIRO (JP)
DAIGLE JEAN-CHRISTOPHE (CA)
ZAGHIB KARIM (CA)
UESAKA SHINICHI (JP)
Application Number:
PCT/JP2017/024159
Publication Date:
January 11, 2018
Filing Date:
June 30, 2017
Export Citation:
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Assignee:
SONY CORP (JP)
HYDRO QUEBEC (CA)
International Classes:
H01M4/04; H01M4/131; H01M4/1391; H01M4/36; H01M4/485; H01M4/62; H01M10/0525; H01M10/0567
Foreign References:
CN103050705A2013-04-17
US20050186481A12005-08-25
Other References:
"High Temperature Life Performance for Lithium-ion Battery Using Lithium Titanium Oxide Negative Electrode with Electrochemically Formed Surface Film Comprising Organic-Inorganic Binary Constituents", GS YUASA TECHNICAL REPORT, vol. 6, no. 1, June 2009 (2009-06-01)
Attorney, Agent or Firm:
TSUBASA PATENT PROFESSIONAL CORPORATION (JP)
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