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:
Jul. 16, 1991
Filed:
Sep. 18, 1990
Hiroyuki Hasebe, Yokohama, JP;
Kazuta Takeno, Yokohama, JP;
Kiyoshi Mitsuyasu, Yokohama, JP;
Yuji Sato, Yokohama, JP;
Hiroyuki Takahashi, Yokohama, JP;
Hirotaka Hayashida, Yokohama, JP;
Ichirou Sawatari, Oomiya, JP;
Koji Ishiwa, Yokohama, JP;
Katuyuki Hata, Yamato, JP;
Kazuhiro Yoshida, Yokohama, JP;
Kunihiko Sasaki, Kawasaki, JP;
Toshiba Battery Co., Tokyo, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A nickel-metal hydride secondary cell comprising a non-sinter type nickel positive electrode accommodated in an enclosure and comprised of a conductive core and a layer formed on the conductive core, the layer made of a mixture of nickel hydroxide power and cobalt monoxide powder covered with a layer of high-valence cobalt oxide, a hydrogen absorbing alloy negative electrode accommodated in the enclosure and comprised of a conductive core and a layer formed on the conductive core and made of a mixture hydrogen absorbing alloy powder and carbon black having a specific surface area of 700 m.sup.2 /g or more, and having a capacity 1.0 to 2.5 times the sum of the capacity of the nickel hydroxide contained in the positive electrode and the electricity required to oxidize the cobalt monoxide powder, a separator made of synthetic resin unwoven fabric having a texture size of 50 to 100 g/m.sup.2 and a thickness of 0.1 to 0.25 mm, and located between the positive electrode and the negative electrode, and alkali electrolyte contained in the enclosure.