Panasonic Corporation

Matsushita Electric Industrial Co., Ltd.

Panasonic Intellectual Property Management Co., Ltd.

Nippon Yakin Kogyo Co., Ltd.

Koichi Morikawa

Masashige Ashizaki

Nario Niibo

Masayuki Sato

Eri Hirose

Yukio Nishioka

Masayuki Taniguchi

Isamu Nishiyama

Yutaka Kobayashi

Shinji Nakano

Yasuyuki Ito

Nao Matsumura

Masatoshi Tasei

Hiroyuki Yanagisawa

Mitsuhiro Fujita

Hideki Imai

Masayuki Shinjou

Hirofumi Iwashima

A capacitor electrode includes a substrate having electrical conductivity, a conductive layer formed on a surface of the substrate, and an electrode layer formed on the conductive layer. The electrode layer is allowed to adsorb and desorb ions on a surface thereof. The conductive layer contains flake graphite. A density of the conductive layer is greater than 1.1 g/cm. An average particle size Dof the flake graphite, which is measured by using a dynamic light scattering method, is less than or equal to 10 &#x3bc;m.

Capacitor electrode and capacitor using same

A storage cell includes a storage element including first and second electrodes which are opposite to each other in a predetermined direction, a first terminal bonded to the first electrode, a second terminal bonded to the second electrode, and an outer resin covering the storage element to expose an outer surface of the first terminal and an outer surface of the second terminal from the outer resin. The storage element has substantially a rectangular shape viewing from the predetermined direction. The outer resin has substantially a rectangular shape viewing from the predetermined direction. The outer resin has first and second surfaces opposite to each other, and has a third surface connected with the first surface and the second surface. The first terminal is exposed on the first surface of the outer resin. The second terminal has a shape extending beyond the storage element along the first and third surfaces, and is exposed on the first surface. This storage cell has a small size, a large capacitance, and high reliability.

Storage cell and method of manufacturing same

A coin-type electrochemical element enables the external lead terminal portions to be accurately and reliably attached to a first lid portion and to a second lid portion of the coin-type electrochemical element, and a method of its production. A coin-type electric double layer capacitor includes a first lid portion and a second lid portion. External lead terminal portions, each having a nearly triangular shape, are separately connected to the outer surfaces of the lid portions. Upon providing the external lead terminal portions having the triangular shape, a welded portion is allowed to have an increased area enabling the coin-type electrochemical element of even a small size to be accurately and reliably welded and making it possible to provide the coin-type electrochemical element having excellent reliability.

Method of producing a coin-type electrochemical element

A coin-shaped storage cell () has a pair of polarizable electrodes (), an insulating separator () interposed between the polarizable electrodes, an electrolytic solution () impregnated in the polarizable electrodes () and the separator (), a metal case () for housing the polarizable electrodes (), an insulating ring packing () arranged in the metal case, and a top lid () which is caulked integrally with the metal case () via the ring packing (). The inner bottom surface of the metal case () is provided with recessed and projected portions.

Coin-shaped storage cell

There is provided a casing material for a storage cell having sufficient corrosion resistance and strength even under a charging environment of a high voltage exceeding 2.8 V. This casing material for the storage cell comprises C: not more than 0.03 mass %, Si: 0.01-0.50 mass %, Mn: not more than 0.20 mass %, P: not more than 0.04 mass %, S: not more than 0.0010 mass %, Ni: 20.0-40.0 mass %, Cr: 20.0-30.0 mass %, Mo: 5.0-10.0 mass %, Al: 0.001-0.10 mass %, N: 0.10-0.50 mass %, Ca: not more than 0.001 mass %, Mg: 0.0001-0.0050 mass %, 0: not more than 0.005 mass %, provided that contents of Cr, Mo and N satisfy Cr+3.3&#xd7;Mo+20&#xd7;N&#x2267;43, and the balance being substantially Fe and inevitable impurities, in which a content of CaO as an oxide inclusion in steel is not more than 20 mass %.

Material of case for storage cell

As a storage cell for surface mounting which reduces the mounting area, increases the reliability of soldering and realizes high-density mounting, provided is a storage cell for surface mounting having: a polar storage cell housing a component between a case and a top cover and sealed with an insulator; an anode terminal connected to an outer surface of the case; and a cathode terminal connected to an outer surface of the top cover. In this storage cell, the anode terminal is provided with an external connection connected to a printed wiring board, the cathode electrode is provided with a mounting-fixing portion connected to an external connection connected to the printed wiring board and the top cover, and a plated layer is formed on the external connections of the anode terminal and cathode terminal and on the mounting-fixing portion of the cathode terminal.

Storage cell for surface mounting

Growing community of inventors

Kyoto, Japan

Koichi Morikawa