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:
Sep. 07, 2010
Filed:
Mar. 22, 2007
Yasuyuki Harada, Moriguchi, JP;
Makoto Ochi, Moriguchi, JP;
Toshihiro Sakatani, Moriguchi, JP;
Kei Ikoma, Moriguchi, JP;
Masao Takee, Moriguchi, JP;
Yasuyuki Harada, Moriguchi, JP;
Makoto Ochi, Moriguchi, JP;
Toshihiro Sakatani, Moriguchi, JP;
Kei Ikoma, Moriguchi, JP;
Masao Takee, Moriguchi, JP;
Sanyo Electric Co., Ltd., Moriguchi-shi, JP;
Abstract
A negative electrode plate of a nickel hydrogen storage battery includes a nonaqueous polymer binder and has an effective surface area per unit capacity of 70 cm/Ah or more. The density of the first and second separators between positive and negative electrode plates ranges from 450 kg/mto 600 kg/m. The nonwoven fabrics of the separators are formed by combining microfibers and compound fibers through melting portions of the compound fibers. The fibers have a virtually circular cross-section. The microfibers and the compound fibers have a diameter ranging from 1 μm to less than 5 μm and a diameter ranging from 5 μm to 15 μm, respectively. The proportion of the microfibers to whole fibers ranges from 10 percent by mass to 20 percent by mass. At least one of the nonwoven fabrics of the separators is subjected to sulfonation treatment.