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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9515316 B1

PDFFull Text
Date of Patent:
Dec. 06, 2016

Filed:

Apr. 22, 2013

Method for producing anode active material for secondary battery, anode active material for secondary battery, method for producing anode for secondary battery, anode for secondary battery, and secondary battery

Applicant:

Showa Denko K.k., Minato-ku, Tokyo, JP;

Inventors:

Hitoshi Yokouchi, Tokyo, JP;

Masahiro Ohmori, Tokyo, JP;

Chiaki Sotowa, Tokyo, JP;

Masayuki Sanbayashi, Tokyo, JP;

Assignee:

SHOWA DENKO K.K., Tokyo, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Carlos Barcena

Int. Cl.
CPC ...
H01M 4/36 (2006.01); H01M 4/485 (2010.01); C23C 22/82 (2006.01); C23C 22/23 (2006.01); C23C 22/80 (2006.01); C23C 22/77 (2006.01); H01M 4/131 (2010.01); H01M 4/04 (2006.01); H01M 4/1391 (2010.01); H01M 4/136 (2010.01); H01M 4/1397 (2010.01); H01M 4/58 (2010.01); H01M 4/66 (2006.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/366 (2013.01); C23C 22/23 (2013.01); C23C 22/77 (2013.01); C23C 22/80 (2013.01); C23C 22/82 (2013.01); H01M 4/0404 (2013.01); H01M 4/131 (2013.01); H01M 4/136 (2013.01); H01M 4/1391 (2013.01); H01M 4/1397 (2013.01); H01M 4/485 (2013.01); H01M 4/5825 (2013.01); H01M 4/661 (2013.01); H01M 10/0525 (2013.01); H01M 2004/027 (2013.01); Y02E 60/122 (2013.01);
Abstract

This method for producing an anode active material for a secondary battery is provided with a step for forming titanium dioxide by means of hydrolysis by adding a titanium-containing compound to an acidic aqueous solution, and furthermore, by means of adding a compound containing an alkaline earth metal and a condensed phosphate, the surface of the titanium dioxide is covered by the condensed phosphate containing the alkaline earth metal in a manner so that the amount of elemental phosphorus atoms and the amount of alkaline earth metal are each in the range of 0.1 to 10 mass % with respect to the mass of titanium dioxide, thus synthesizing the anode active material ().

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