Murata Manufacturing Co., Ltd.

Yuusuke Ueba

Yasuhiko Ueda

Yasutake Fukuda

Masaharu Itaya

Hiroyuki Harada

Keiji Horikawa

Yukio Ehara

Manabu Sawada

An electric storage device includes an electrolyte and an electric storage unit including a positive electrode including a positive-electrode collector electrode and a positive-electrode active-material layer disposed on the positive-electrode collector electrode; a negative electrode including a negative-electrode collector electrode and a negative-electrode active-material layer disposed on the negative-electrode collector electrode and facing the positive-electrode active-material layer; a first insulating layer bonded to the positive electrode and the negative electrode to isolate the positive electrode and the negative electrode from each other; and a region that is sealed with the first insulating layer in plan view and that holds the electrolyte between the positive electrode and the negative electrode, wherein an air permeability P of the first insulating layer satisfies the formula 1250 s/100 cc&#x3c;P&#x3c;95000 s/100 cc.

Electric storage device and method for producing the same

An electrical storage unit that includes a positive electrode, which includes a positive-electrode collector electrode and a positive-electrode active material layer on the positive-electrode collector electrode, a negative electrode, which includes a negative-electrode collector electrode and a negative-electrode active material layer on the negative-electrode collector electrode, the negative-electrode active material layer facing the positive-electrode active material layer, and a first insulating layer bonded to the positive electrode and the negative electrode and separating the positive electrode from the negative electrode. The first insulating layer is bonded to part of a surface of the positive electrode and part of a surface of the negative electrode and includes a communication path for connecting the outside of the electrical storage unit to the inside of the electrical storage unit.

Electrical storage device and method for manufacturing the same

A power storage device having: a laminated body formed by providing a separator layer between a first electrode which is one of a cathode and an anode and a second electrode which is the other electrode; an electrolyte; and a package which houses the laminated body and the electrolyte. At least two first electrode composite sheets are included which are each obtained by integrating a first collector electrode, a first electrode active material layer provided on one principal surface of the first collector electrode, and a separator layer covering at least part of the one principal surface, and the other principal surface of the first collector electrode of one first electrode composite sheet out of the at least two first electrode composite sheets is opposed to, and bonded to, the other principal surface of the first collector electrode of the other first electrode composite sheet.

Power storage device and manufacturing method therefor

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Nagaokakyo, Japan

Yuusuke Ueba