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:
Feb. 16, 2016
Filed:
Mar. 28, 2007
Atsushi Fukui, Moriguchi, JP;
Hiroshi Minami, Moriguchi, JP;
Yasuyuki Kusumoto, Moriguchi, JP;
SANYO Electric Co., Ltd., Osaka, JP;
Abstract
[Problem] An object of the invention is to provide a lithium secondary battery that shows good cycle performance and at the same time prevents a battery thickness increase due to charge-discharge cycles, and a method of manufacturing such a battery. [Means for Solving the Problem] A lithium secondary battery includes a negative electrode () having a negative electrode current collector () and a negative electrode active material layer () disposed on the negative electrode current collector (), a positive electrode () having a positive electrode active material, a separator (), and a non-aqueous electrolyte. The negative electrode active material layer includes negative electrode active material particles and a negative electrode binder, and the negative electrode active material particles include silicon particles and/or silicon alloy particles. The silicon particles and the silicon alloy particles have a crystallite size of 100 nm or less.