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:
Jun. 11, 2019
Filed:
Nov. 18, 2015
Sanyo Electric Co., Ltd., Daito-shi, Osaka, JP;
Kouhei Tuduki, Hyogo, JP;
Atsushi Fukui, Hyogo, JP;
SANYO Electric Co., Ltd., Daito-shi, JP;
Abstract
A positive electrode for nonaqueous electrolyte secondary batteries includes a positive electrode current collector and a positive electrode mix layer, formed on the current collector, containing a positive electrode active material. The positive electrode active material mainly contains a lithium transition metal oxide in which the molar ratio of nickel (Ni) to a transition metal component is 20% or more. The positive electrode mix layer contains a plurality of pores and has a first peak of a logarithmic differential pore volume distribution (dV/dlogD) that appears in the range where the pore diameter D is less than 1 μm and a second peak of the logarithmic differential pore volume distribution (dV/dlogD) that appears in the range where the pore diameter D is 1 μm or more in a pore distribution determined by mercury intrusion porosimetry. According to this configuration, a nonaqueous electrolyte secondary battery having excellent output characteristics can be provided.