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:
Jan. 08, 2019
Filed:
Nov. 11, 2016
Fdk Corporation, Tokyo, JP;
Fujitsu Limited, Kanagawa, JP;
Yuzo Imoto, Tokyo, JP;
Takeshi Ito, Tokyo, JP;
Shigekazu Yasuoka, Tokyo, JP;
Shuuichi Doi, Isehara, JP;
Takashi Yamazaki, Kawasaki, JP;
Yuji Kataoka, Yokohama, JP;
FDK CORPORATION, Tokyo, JP;
FUJITSU LIMITED, Kanagawa, JP;
Abstract
A nickel-hydrogen secondary battery includes an electrode group including a separator, a positive electrode and a negative electrode, the positive electrode includes a positive electrode active material, the positive electrode active material includes a composite particle including a compound of Co and a compound of Ni, and the ratio R represented by A/B satisfies a relationship of R≥0.3, when the amount of jumping in the X-ray absorption fine structure spectrum of the Co in 7600 to 7800 eV and the amount of jumping in the X-ray absorption fine structure spectrum of the Ni in 8300 to 8500 eV obtained by measurement according to a conversion electron yield method are defined as A and B, respectively.