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. 27, 2015
Filed:
May. 02, 2012
Asuki Yanagihara, Fukushima, JP;
Satoshi Fujiki, Fukushima, JP;
Yosuke Hosoya, Fukushima, JP;
Guohua LI, Fukushima, JP;
Asuki Yanagihara, Fukushima, JP;
Satoshi Fujiki, Fukushima, JP;
Yosuke Hosoya, Fukushima, JP;
Guohua Li, Fukushima, JP;
Sony Corporation, , JP;
Abstract
A lithium ion secondary battery capable of improving the lithium ion input-output characteristics. An active material capable of storing and releasing lithium ions is a Li complex oxide or a Li complex oxoacid salt. A plurality of primary particles have a particle size distribution with 1 nm<D10<65 nm, 5 nm<D50<75 nm, and 50 nm<D90<100 nm. The maximum peak pore size A in a pore size distribution as measured by a mercury intrusion technique is 10 nm≦A≦75 nm. The ratio B/A of the maximum peak pore size A and the crystallite size B is 0.5<B/A≦1.