The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 01, 1991
Filed:
Sep. 18, 1990
Hiroyuki Hasebe, Yokohama, JP;
Kazuta Takeno, Yokohama, JP;
Yuji Sato, Yokohama, JP;
Hiroyuki Takahashi, Yokohama, JP;
Hirotaka Hayashida, Yokohama, JP;
Kiyoshi Mitsuyasu, Yokohama, JP;
Ichirou Sawatari, Oomiya, JP;
Toshiba Battery Co., Ltd., Tokyo, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A nickel-metal hydride secondary cell comprising an enclosure, a non-sinter type nickel positive electrode accommodated in said enclosure and formed of a conductive core and a layer formed on the core and made mainly of a binding medium, nickel hydroxide powder, and cobalt monoxide powder, a hydrogen absorbing alloy negative electrode accommodated in said enclosure and formed of punched metal and a layer formed on the punched metal by applying a paste thereto, said punched metal having a plurality of apertures having a diameter of 1 to 5 mm at an aperture rate of 45 to 70% and having a thickness equal to 10 to 35% of the overall thickness of the negative electrode, and said paste made of 100 parts by weight of hydrogen absorbing alloy powder, 0.005 to 1 part by weight of polyacrylate, 0.01 to 1 part by weight of carboxymethylcellulose, 0.5 to 7 parts by weight of fluoro-resin, and 0.1 to 4 parts by weight of conductive material powder, a separator made of synthetic resin unwoven fabric and located between said positive and negative electrodes, and an alkali electrolyte contained in said enclosure.