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:
Mar. 27, 2012
Filed:
Mar. 12, 2010
Atsushi Sano, Tokyo, JP;
Keitaro Otsuki, Tokyo, JP;
Yosuke Miyaki, Tokyo, JP;
Takeshi Takahashi, Tokyo, JP;
Akiji Higuchi, Kyoto, JP;
Atsushi Sano, Tokyo, JP;
Keitaro Otsuki, Tokyo, JP;
Yosuke Miyaki, Tokyo, JP;
Takeshi Takahashi, Tokyo, JP;
Akiji Higuchi, Kyoto, JP;
TDK Corporation, Tokyo, JP;
Abstract
The present invention provides a method of manufacturing an active material which can form an electrochemical device excellent in discharge capacity. The method of manufacturing an active material in accordance with the present invention comprises a hydrothermal synthesis step of heating a mixture including a lithium compound, a metal compound containing one species selected from the group consisting of Fe, Mn, Co, Ni, and V, a phosphorus compound, and water within a reactor while keeping an internal pressure of the reactor at 0.3 MPa or lower by ventilating the inside of the reactor to the outside, and closing the reactor at a time when the temperature of the mixture reaches 100 to 150° C.; and a firing step of firing the mixture after the hydrothermal synthesis step.