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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 9543573 B1

PDFFull Text
Date of Patent:
Jan. 10, 2017

Filed:

Feb. 15, 2013

Method of producing iron phosphate, lithium iron phosphate, electrode active substance, and secondary battery

Applicant:

Murata Manufacturing Co., Ltd., Nagaokakyo-Shi, Kyoto-fu, JP;

Inventor:

Yuji Kintaka, Nagaokakyo, JP;

Assignee:

MURATA MANUFACTURING CO., LTD., Nagaokakyo-Shi, Kyoto-Fu, JP;

Attorney:

Arent Fox LLP

Primary Examiner:

Patrick Ryan

Assistant Examiner:

Christopher Domone

Int. Cl.
CPC ...
H01M 4/136 (2010.01); C01B 25/37 (2006.01); C01B 25/45 (2006.01); H01M 4/1397 (2010.01); H01M 4/58 (2010.01); H01M 10/052 (2010.01);
U.S. Cl.
CPC ...
H01M 4/136 (2013.01); C01B 25/37 (2013.01); C01B 25/45 (2013.01); H01M 4/1397 (2013.01); H01M 4/5825 (2013.01); H01M 10/052 (2013.01); Y02E 60/122 (2013.01); Y02P 70/54 (2015.11);
Abstract

A mixed aqueous solution is prepared in which a phosphorus source, a divalent Fe compound, and an oxidant are mixed at a predetermined ratio. Then, this mixed aqueous solution is dropwise added into a buffer solution having a pH value of 1.5 to 9, thereby to produce a precipitated powder of FePO. This FePOis synthesized with a lithium compound to obtain LiFePO. An electrode active substance containing this LiFePOas a major component is used as a positive electrode material of a secondary battery.

Find Patent Forward Citations

Kintaka, Yuji. (2017). Method of producing iron phosphate, lithium iron phosphate, electrode active substance, and secondary battery (U.S. Patent No. 9543573). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9543573

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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