logo

For the Inventor, By the Inventor

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 9793544 B1

PDFFull Text
Date of Patent:
Oct. 17, 2017

Filed:

Nov. 12, 2015

Method of manufacturing positive electrode material for lithium ion secondary battery, positive electrode material for lithium ion secondary battery, positive electrode for lithium ion secondary battery and lithium ion secondary battery

Applicant:

Sumitomo Osaka Cement Co., Ltd., Tokyo, JP;

Inventors:

Kazuyo Yamamoto, Tokyo, JP;

Ryuuta Yamaya, Tokyo, JP;

Akinori Yamazaki, Tokyo, JP;

Assignee:

SUMITOMO OSAKA CEMENT CO., LTD., , JP;

Attorney:

Merchant & Gould P.C.

Primary Examiner:

Olatunji Godo

Int. Cl.
CPC ...
H01M 10/052 (2010.01); H01M 4/58 (2010.01); H01M 4/131 (2010.01); C01B 25/45 (2006.01); H01M 10/0525 (2010.01);
U.S. Cl.
CPC ...
H01M 4/5825 (2013.01); C01B 25/45 (2013.01); H01M 4/131 (2013.01); C01P 2004/45 (2013.01); C01P 2004/60 (2013.01); H01M 10/0525 (2013.01);
Abstract

A method of manufacturing the positive electrode material for a lithium ion secondary battery includes a first step of mixing LiPO, LiOH, HPO, an Fe source, a Mn source, and an M source to prepare raw material slurry, and a second step of subjecting the raw material slurry to a reaction under a high temperature and a high pressure. In the first step, mixing amounts of Li and P are set to 3.00≦Li/(Fe+Mn+M)≦3.10 and 1.00≦P/(Fe+Mn+M)≦1.10, mixing amounts of LiOH and HPOare set to 0<LiOH/(Fe+Mn+M)<0.40 and 0<HPO/(Fe+Mn+M)<0.15, the amount of LiPO, LiOH, HPO, the Fe source, the Mn source and the M source in the raw material slurry is set to 0.5 to 1.5 mol/L in terms of LiFeMnMPO, and pH of the raw material slurry is set to 4.0 to 5.5.

Find Patent Forward Citations

Yamamoto, Kazuyo. (2017). Method of manufacturing positive electrode material for lithium ion secondary battery, positive electrode material for lithium ion secondary battery, positive electrode for lithium ion secondary battery and lithium ion secondary battery (U.S. Patent No. 9793544). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9793544

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

Loading…