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:
Oct. 31, 2017
Filed:
Sep. 21, 2012
Tatsuya Hashimoto, Osaka, JP;
Yusuke Fukumoto, Toyonaka, JP;
Keisuke Ohara, Osaka, JP;
Yuji Yokoyama, Moriguchi, JP;
Tatsuya Hashimoto, Osaka, JP;
Yusuke Fukumoto, Toyonaka, JP;
Keisuke Ohara, Osaka, JP;
Yuji Yokoyama, Moriguchi, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-ken, JP;
Abstract
Provided is a positive electrode for nonaqueous electrolyte secondary batteries including a positive electrode mixture layer formed of a positive electrode mixture paste containing a positive electrode active material. The positive electrode active material has a particle diameter of 2 μm or more and less than 7 μm. The positive electrode mixture layer includes a first mixture layer in which a maximum diameter of pores formed between particles of the positive electrode active material is more than 1.0 μm and 5.0 μm or less, and a second mixture layer in which a maximum diameter of the pores is 1.0 μm or less. The second mixture layer is arranged closer to the current collector than the first mixture layer. A ratio of a thickness of the first mixture layer to a thickness of the second mixture layer is more than 0.1 and 1.0 or less.