Taiyo Yuden Co., Ltd.

Tomohiro Taguchi

Naoto Hagiwara

Katsuei Ishida

Tomofumi Akiba

Satoshi Nagura

Toshiya Terui

Yukinori Hato

Shin Nakagawa

Kenichiro Nakahara

Provided is an electrochemical device which is capable of suppressing problems affecting the capacitor element as a whole, such as a drop in its voltage resistance characteristics and shortening of its life. The capacitor element () is constituted of a laminate formed by superposition of a first electrode sheet (), a separation sheet (), a second electrode sheet (), a separation sheet (), and a third electrode sheet () in the named order from the bottom, and folding the laminate along a reference line VSL to double the laminate. In the resulting folded laminate, a collector electrode layer () and polarizable electrode layer () of the first electrode sheet (), the collector electrode layer () and polarizable electrode layer () of the second electrode sheet (), the collector electrode () and polarizable electrode layer () of the third electrode sheet (), and the two separation sheets () are connected to each other at the respective folded locations.

Electrochemical device

The organic electrolyte cell that is suitable for application of direct current backup of pulse load with load width on the order of milliseconds and has higher backup capability than the conventional design is achieved by setting the product R&#xb7;C of an impedance R (&#x3a9;) at 1 kHz and a capacity C (F) is in a range from 0.00002 to 0.05, and improving the balance of voltage drop during discharge over a specified load width on the order of milliseconds.

Organic electrolyte battery

Growing community of inventors

Ueda, Japan

Tomohiro Taguchi