Murata Manufacturing Co., Ltd.

Kunio Nishida

Masutaka Ouchi

Makoto Yoshioka

Takeshi Hayashi

Tatsuo Kunishi

Masanori Endo

Koichi Watanabe

Shunjiro Imagawa

Kouichi Watanabe

A layered solid-state battery that includes a first unit cell, a second unit cell, and an internal collection layer that is disposed to intervene between the first unit cell and the second unit cell. Each of the unit cells is constituted of a positive electrode layer, a solid electrolyte layer, and a negative electrode layer that are sequentially stacked. The internal collection layer is disposed to be in contact with each of the negative electrode layers of the unit cells. Also, the internal collection layer contains an electron conductive material and an ion-conductively electrically conductive specific conductive material.

Layered solid-state battery

A layered solid-state battery that includes a first unit cell, a second unit cell, and an internal collection layer that is disposed to intervene between the unit cells. Each of the unit cells includes a positive electrode layer, a solid electrolyte layer, and a negative electrode layer that are sequentially stacked. The internal collection layer has one side surface that is in contact with the positive electrode layer of the first unit cell and the other side surface that is in contact with the negative electrode layer of the second unit cell. Also, the internal collection layer contains an electron conductive material and an ion-conductively insulating specific conductive material.

An intercellular separation structure body capable of electrically connecting a plurality of unit cells that include a laminate type solid secondary battery with each other, and capable of ion-conductively insulating a positive electrode layer and a negative electrode layer in two adjacent unit cells, as well as a laminate type solid secondary battery provided with the same. The intercellular separation structure body is an intercellular separation structure body disposed between a plurality of unit cells each of which includes a positive electrode layer, a solid electrolyte layer, and a negative electrode layer that are sequentially stacked in a laminate type solid secondary battery. This intercellular separation structure body includes an insulating layer that electroconductively and ion-conductively insulates the plurality of unit cells from each other and an electroconductive section that is formed within the insulating layer and electrically connects the plurality of unit cells with each other.

Intercellular separation structure body and laminate type solid secondary battery provided with the same

A method of fabricating a flat type electrochemical device, which is constructed by placing in a case comprising first and second case half bodies a separator and first and second functional substances for an electrochemical device so arranged as to interpose the separator. Peripheral portions of the first and second case half bodies are overlapped with each other, the peripheral portions are welded by a welding process during the application of pressure whereby the peripheral portions are joined with substantially no gaps. The portions welded by the welding process with pressure are then further welded using a laser beam welding.

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Nagaokakyo, Japan

Kunio Nishida