Kyushu University

Toyota Jidosha Kabushiki Kaisha

Murata Manufacturing Co., Ltd.

Ayuko Kitajou

Shigeto Okada

Jun Yoshida

Shinji Nakanishi

Irina D Gocheva

Ryuichi Tsuji

Hideyuki Komatsu

Kuniko Chihara

Junichi Yamaki

A positive electrode active substance for the non-aqueous secondary battery is provided. The positive electrode active substance includes a metal or a metal compound including the metal element Mexhibiting a conversion reaction and/or a reverse conversion reaction, and an amorphous metal oxide of the metal element M. Mincludes at least one metal element selected from the group consisting of V, Cr, Mo, Mn, Ti, and Ni.

Positive electrode active substance for non-aqueous secondary battery and non-aqueous secondary battery including the same

The present invention is to provide a cathode active material configured to increase, when used in a lithium battery, the discharge capacity of the lithium battery higher than conventional lithium batteries, and a lithium battery including the cathode active material. Presented is a cathode active material for lithium batteries, wherein the cathode active material is represented by the following composition formula (1) and has a rock salt type crystal structure including formula (1): LiNiCoMnTiOwherein x and y are real numbers that satisfy x&#x3e;0, y&#x3e;0 and x+y&#x3c;1.

Cathode active material for lithium batteries, and lithium battery comprising the cathode active material for lithium batteries

Provided is a technology for producing a positive electrode active substance mainly composed of FeOF having a sufficient charge-discharge capacity, in the short-time and easy manner. Also provided is a positive electrode active substance mainly composed of FeOF. The method for producing the positive electrode active substance mainly composed of FeOF comprises the steps of admixing iron oxide FeOand iron fluoride FeFboth in solid states, and melt-quenching the mixture in an atmosphere of inert gas. The positive electrode active substance mainly composed of FeOF is composed of not less than 50% by weight of FeOF with a remainder being iron fluoride FeFand/or iron oxide FeO.

Method for producing iron oxyfluoride positive electrode active substance and iron oxyflouride positive electrode active substance

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Fukuoka, Japan

Ayuko Kitajou