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.:
Date of Patent:
Apr. 07, 2020
Filed:
Mar. 30, 2012
Atsushi Sano, Tokyo, JP;
Keitaro Otsuki, Tokyo, JP;
Tomohiko Kato, Tokyo, JP;
Akinobu Nojima, Tokyo, JP;
Akiji Higuchi, Kyoto, JP;
Atsushi Sano, Tokyo, JP;
Keitaro Otsuki, Tokyo, JP;
Tomohiko Kato, Tokyo, JP;
Akinobu Nojima, Tokyo, JP;
Akiji Higuchi, Kyoto, JP;
TDK CORPORATION, Tokyo, JP;
Abstract
A method for manufacturing an active material, capable of improving the discharge capacity of a lithium ion secondary battery is provided. The method for manufacturing an active material according to the present invention includes a first step of heating a mixture solution including a lithium source, a phosphate source, a vanadium source, and water under pressure to generate a precursor in the mixture solution, and adjusting the pH of the mixture solution including the precursor to be 6 to 8; and a second step of heating the precursor at 425 to 650° C. after the first step to generate an active material.