Jm Energy Corporation

Chisato Marumo

Naoshi Yasuda

Nobuo Ando

Makoto Taguchi

Yuu Watanabe

Kenichi Matsumoto

Yuka Toyomasu

Makoto Ohshima

A wound-type accumulator is equipped with a cylindrical wound electrode unit, which has belt-like positive electrode and negative electrode and configured by winding an electrode stack obtained by stacking the positive electrode and negative electrode through a separator from one end thereof, and an electrolytic solution. The negative electrode and/or the positive electrode is doped with lithium ions by electrochemical contact of the negative electrode and/or the positive electrode with a lithium ion source, intra-positive electrode spaces are formed in the positive electrode, and at least one lithium ion source is provided in the intra-positive electrode space or at a position opposing to the intra-positive electrode space in the negative electrode in a state coming into no contact with the positive electrode.

Wound-type accumulator having simplified arrangement of a lithium ion source

A coated electrode includes a current collector of an etched aluminum foil having a thickness of 20 to 45 &#x3bc;m, an apparent density of 2.00 to 2.54 g/cm, an air permeability of 20 to 120 s and a number of through-holes penetrating therethrough from the front surface to the back surface, and an electrode layer formed by applying a coating material including, as an active material, a substance capable of reversibly carrying lithium ions and anions on to the current collector. The coated electrode is industrially producible, high in conductivity and strength, and excellent in evenness. A capacitor, for example, can make use of the electrode.

Coated electrode and organic electrolyte capacitor

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Hokuto, Japan

Chisato Marumo