logo

For the Inventor, By the Inventor

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.:

US 11031587 B1

PDFFull Text
Date of Patent:
Jun. 08, 2021

Filed:

Jul. 01, 2016

Negative electrode material for lithium-ion batteries including non-flaky artificial graphite including silicon-containing particles, artificial graphite particles and carbonaceous material

Applicants:

Showa Denko K. K., Tokyo, JP;

Umicore, Brussels, BE;

Inventors:

Nobuaki Ishii, Tokyo, JP;

Arihiro Muto, Tokyo, JP;

Yasunari Otsuka, Tokyo, JP;

Masataka Takeuchi, Tokyo, JP;

Dirk Van Genechten, Olen, BE;

Stijn Put, Olen, BE;

Assignees:

SHOWA DENKO K. K., Tokyo, JP;

UMICORE, Brussels, BE;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Kwang Han

Int. Cl.
CPC ...
H01M 4/36 (2006.01); H01M 4/587 (2010.01); H01M 4/133 (2010.01); C01B 33/02 (2006.01); H01M 4/134 (2010.01); H01M 4/485 (2010.01); H01M 4/38 (2006.01); H01M 4/48 (2010.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01); C01B 32/205 (2017.01); C01B 33/18 (2006.01);
U.S. Cl.
CPC ...
H01M 4/364 (2013.01); C01B 32/205 (2017.08); C01B 33/02 (2013.01); C01B 33/18 (2013.01); H01M 4/133 (2013.01); H01M 4/134 (2013.01); H01M 4/366 (2013.01); H01M 4/386 (2013.01); H01M 4/483 (2013.01); H01M 4/485 (2013.01); H01M 4/587 (2013.01); H01M 10/0525 (2013.01); C01P 2002/74 (2013.01); C01P 2002/78 (2013.01); C01P 2004/51 (2013.01); C01P 2004/62 (2013.01); C01P 2006/12 (2013.01); C01P 2006/14 (2013.01); C01P 2006/16 (2013.01); C01P 2006/40 (2013.01); H01M 2004/021 (2013.01); H01M 2004/028 (2013.01);
Abstract

A negative electrode material for a lithium ion battery, including silicon-containing particles, artificial graphite particles and a carbonaceous material, wherein at least part of the silicon-containing particles, the artificial graphite particles and the carbonaceous material form composite particles; wherein the silicon-containing particles are silicon particles having a SiOx (0<x≤2) layer on the particle surface, having an oxygen content of 1.0 mass % or more and 18.0 mass % or less, and mainly containing particles having a primary particle diameter of 200 nm or less; wherein the artificial graphite particles are non-flaky artificial graphite particles and have a 50% particle diameter in a volume-based cumulative particle size distribution, D50, of 1.0 μm or more and 15.0 μm or less. Also disclosed is a lithium-ion battery including a negative electrode using the negative electrode material.

Find Patent Forward Citations

Loading…