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. 24, 2016
Filed:
Jan. 07, 2015
Sony Corporation, Tokyo, JP;
Atsushi Nishimoto, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
Batteries, separators, battery packs, electronic devices, electromotive vehicles, power storage apparatus, and electric power systems are provided. In one embodiment, a battery includes a positive electrode, a negative electrode, and an electrolytic solution holding layer between the positive electrode and the negative electrode. The electrolytic solution holding layer includes a porous polymer compound, and an electrolytic solution is held in the porous polymer compound. The porous polymer compound includes a vinylidene fluoride polymer selected from the group consisting of (1) a vinylidene fluoride homopolymer and (2) a copolymer including a vinylidene fluoride monomer unit and a hexafluoropropylene monomer unit. The average molecular weight of the vinylidene fluoride polymer is 500,000 or more to less than 1.5 million, and the air permeability of the porous polymer compound is 500 seconds/100 cc or less.