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:
Apr. 21, 2015
Filed:
Apr. 07, 2009
Takakazu Hirose, Fukushima, JP;
Kenichi Kawase, Fukushima, JP;
Kazunori Noguchi, Fukushima, JP;
Takayuki Fujii, Fukushima, JP;
Takakazu Hirose, Fukushima, JP;
Kenichi Kawase, Fukushima, JP;
Kazunori Noguchi, Fukushima, JP;
Takayuki Fujii, Fukushima, JP;
Sony Corporation, Tokyo, JP;
Abstract
A secondary battery capable of improving the cycle characteristics and the swollenness characteristics is provided. The secondary battery includes a cathode, an anode, and an electrolytic solution. The anode includes an anode active material layer having a plurality of fine pores on an anode current collector. The anode active material layer contains an anode active material and an anode binder. A change rate of a mercury intrusion into the plurality of fine pores measured by mercury penetration technique is distributed to show a peak in the pore diameter range from 30 nm to 10000 nm, both inclusive.