Hitachi Maxell, Limited

Ovonic Battery Company, Inc.

Kozo Kajita

Ryo Nagai

Fusaji Kita

Akira Kawakami

Yoshio Uetani

Akio Shimizu

Stanford R Ovshinsky

Michael A Fetcenko

Tsunemi Ohiwa

Toshikatsu Manabe

Kazuo Ishida

Shintaro Sekido

Noboru Odani

Kenya Kazehara

Hiroshi Ishiuchi

Satoru Kuwano

Osamu Yumimoto

Kazumi Yoshimitsu, Deceased

Kazumi Yoshimitu

Toshio Ohshima

Masanobu Kizu

Tadashi Goryo

An organic electrolytic solution type cell using an electrolytic solution of a lithium salt in a polar solvent which comprises a compound having an organophobic group and an organophilic group, which cell has improved storage stability and good charge-discharge characteristics.

Organic electrolyte solution type cell

An electrochemical hydrogen storage alloy having decreased hydrogen overpressure as well as other desirable operational parameters, comprising on an atomic percent basis: 14 to 22 percent vanadium; 28 to 39 percent nickel; 7 to 15 percent titanium; 15 to 34 percent zirconium; and at least one member selected from the group consisting of 0.001 to 7 percent chromium, 0.001 to 7 percent cobalt, 0.001 to 7 percent iron, 0.001 to 3.6 percent manganese, and 0.001 to 2.7 percent aluminum, wherein the atomic ratio of the vanadium to zirconium is in the range of 1:2.26 to 1:0.68. An electrochemical hydrogen storage alloy having a reduced self-discharge rate comprising an alloy having a heterogeneous, disordered microstructure resulting from changes in the mutual solubility of the elements of the alloy, wherein hydrogen in a particular phase is not easily discharged either though low surface area, or an oxide of limited porosity or catalytic property.

Electrode alloy having decreased hydrogen overpressure and/or low

In a method of charging secondary battery, the charging control is performed when it is detected that the secondary differential value of the detected voltage curve changes from positive value to a negative value at the point C or its near portion.

Method of charging secondary batteries

An organic electrolytic solution type cell using an electrolytic solution of a lithium salt in a polar solvent which comprises a compound having an organophobic group and an organophilic group, which cell has improved storage stability and good charge-discharging characteristics.

A non-aqueous electrochemical cell comprising an anode containing an alkali metal as an essential component of the active anode material, a cathode collector comprising a carbonaceous porous shaped body and a cathode-electrolyte consisting of an ionically conductive solution of a solute in a solvent containing a liquid oxyhalide, characterized in that at least one of the electrolyte and the collector is incorporated with an aromatic compound to prevent voltage drop at the initial stage of discharge.

Non-aqueous electrochemical cell

In a lithium secondary battery having lithium ion electrical conductive electrolyte, a positive electrode and a negative electrode, the negative electrode being formed by a Li-Ga-In alloy.

Lithium secondary battery

A silver oxide cell which comprises a positive electrode comprising a shaped body of silver oxide as a main positive active material, a negative electrode and an alkaline electrolyte, characterized in that the shaped body is a molded product of a composition comprising particles of silver oxide and particles of manganese dioxide, both particles having a certain particle size distribution, so that a detectable voltage difference is produced prior to complete consumption of the discharge capacity of the cell, whereby the termination of the discharge capacity of the cell can be anticipated.

Silver oxide cell and its manufacture

A silver(II) oxide cell which comprises a positive electrode comprising a shaped body of silver(II) oxide as a positive active material, a negative electrode comprising zinc as a negative active material and an alkaline electrolyte, characterized in that the shaped body is a molding product of a composition comprising particles of which each particle comprises a core part of silver(II) oxide and a surface part of silver(I) oxide integrally and continuously provided around the core part, the weight ratio of the silver(II) oxide and the silver(I) oxide being from about 70 : 30 to 90 : 10. Such silver(II) oxide cell has large discharge capacity and shows a flat and even discharge characteristics without any substantial deterioration in performances on storage.

Growing community of inventors

Shiga, Japan

Kozo Kajita