The Furukawa Electric Co., Ltd.

The Furukawa Battery Co., Ltd.

Yosuke Hirayama

Michio Ohkubo

Toshio Tani

Naoki Uno

Michihiro Shimada

Takeshi Yagi

Takeshi B Nishimura

Hidetoshi Abe

Miyu Aita

An object of the present invention is to provide a cathode active material which contains small-particle sized and low-crystalline lithium transition metal silicate and which undergoes charge-discharge reaction at room temperature. The cathode active material for a non-aqueous electrolyte secondary battery is characterized by containing a lithium transition metal silicate and exhibits diffraction peaks having half widths of 0.175 to 0.6&#xb0;, the peaks observed through powder X-ray diffractometry within a 2&#x3b8; range of 5 to 50&#xb0;.

Cathode active material, cathode, secondary battery and manufacturing methods for the same

A particulate mixture which can be used as a precursor of lithium transition metal silicate-type compound of small particle size and low crystallinity, is provided. It is a mixture of silicon oxide particulates, transition metal oxide particulates, and lithium transition metal silicate particulates, and its powder X-ray diffraction measurement shows diffraction peaks near 2&#x3b8;=33.1&#xb0; and near 2&#x3b8;=35.7&#xb0;, and said silicon oxide particulates and said transition metal oxide particulates are amorphous, and said lithium transition metal silicate particulates are in a microcrystalline or amorphous state.

Particulate mixture, active material aggregate, cathode active material, cathode, secondary battery and methods for producing the same

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Tokyo, Japan

Yosuke Hirayama