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:
Nov. 03, 2020
Filed:
May. 09, 2018
Murata Manufacturing Co., Ltd., Kyoto, JP;
Tadashi Matsushita, Kyoto, JP;
Masaki Kuratsuka, Kyoto, JP;
Murata Manufacturing Co., Ltd., Kyoto, JP;
Abstract
A negative electrode active material includes a carbon material; a plurality of first particles including a first silicon oxide particle and a carbon layer and a plurality of second particles including a carbon particle and a second silicon oxide particle, and when a first mass of the first silicon oxide particle per gram of the negative electrode active material is referred to as Mgram, and a second mass of the second silicon oxide particle per gram of the negative electrode active material is referred to as Mgrams, 0.40≤M/(M+M)≤0.85 is satisfied, and when a first discharge capacity associated with the carbon material and the carbon particle is referred to as Cp, and a second discharge capacity associated with the first silicon oxide particle and the second silicon oxide particle is referred to as Cp, 0.15≤Cp/(Cp+Cp)≤0.5 is satisfied.