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:
May. 31, 2016
Filed:
Jun. 15, 2012
Takehiro Noguchi, Tokyo, JP;
Hideaki Sasaki, Tokyo, JP;
Makiko Uehara, Tokyo, JP;
Yuukou Katou, Tokyo, JP;
Takehiro Noguchi, Tokyo, JP;
Hideaki Sasaki, Tokyo, JP;
Makiko Uehara, Tokyo, JP;
Yuukou Katou, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
An active material for a secondary battery whose lifetime characteristics are improved is provided. The active material for a secondary battery includes a first active material represented by Li[M1M2M3]O, wherein M1 is at least one selected from Ni, Cr, Fe, Co, and Cu; M2 is at least one selected from Mn, Ti, and Si, and contains Mn; M3 is at least one selected from Li, B, Mg, Al, Na, and Ca; and 0≦p, 0<m, 0<n, and m+n<2; and a second active material represented by Li[LiXZMn]O, wherein X is at least one selected from Ni, Cr, Fe, Co, and Cu; Z is at least one selected from Al, Mg, B, Si, Na, Ca, and Ti; and 0≦q, 0<a, 0<x, 0≦z, and a+x+z<1.