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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 9972836 B1

PDFFull Text
Date of Patent:
May. 15, 2018

Filed:

Apr. 27, 2013

Siox/si/c composite material and process of producing thereof, and anode for lithium ion battery comprising said composite material

Applicants:

Robert Bosch Gmbh, Stuttgart, DE;

Shanghai Jiaotong University, Shanghai, CN;

Inventors:

Jun Yang, Shanghai, CN;

Xuejiao Feng, Shanghai, CN;

Jingjun Zhang, Shanghai, CN;

Longjie Zhou, Shanghai, CN;

Yuqian Dou, Shanghai, CN;

Assignee:

Robert Bosch GmbH, Stuttgart, DE;

Attorney:

Maginot, Moore & Beck LLP

Primary Examiner:

Sarah A Slifka

Int. Cl.
CPC ...
H01M 4/36 (2006.01); H01M 10/0525 (2010.01); H01M 4/1395 (2010.01); H01M 4/38 (2006.01); H01M 4/48 (2010.01); C04B 35/626 (2006.01); C04B 35/628 (2006.01); H01M 4/04 (2006.01); H01M 4/583 (2010.01); H01M 4/1391 (2010.01); H01M 4/587 (2010.01); H01M 4/62 (2006.01);
U.S. Cl.
CPC ...
H01M 4/366 (2013.01); C04B 35/62615 (2013.01); C04B 35/62839 (2013.01); C04B 35/62884 (2013.01); C04B 35/62897 (2013.01); H01M 4/0428 (2013.01); H01M 4/1395 (2013.01); H01M 4/362 (2013.01); H01M 4/364 (2013.01); H01M 4/386 (2013.01); H01M 4/48 (2013.01); H01M 4/483 (2013.01); H01M 4/583 (2013.01); H01M 10/0525 (2013.01); C04B 2235/3418 (2013.01); C04B 2235/401 (2013.01); C04B 2235/428 (2013.01); C04B 2235/5436 (2013.01); C04B 2235/5472 (2013.01); H01M 4/1391 (2013.01); H01M 4/587 (2013.01); H01M 4/625 (2013.01); H01M 2220/30 (2013.01);
Abstract

An SiOx/Si/C composite material, includes SiOx/Si composite particles and a carbon coating layer coated on the SiOx/Si composite particles. The SiOx/Si composite particles include nano-silicon crystallites embedded in an SiOx (0<x≤2) amorphous matrix phase. The SiOx/Si composite particles have an Si:O molar ratio of 5:1-1.1:1, preferably 2:1-1.2:1. A process for producing an SiOx/Si/C composite material, includes a) milling SiO powder together with a metal reductant in a molar ratio of 125:1-10:1, preferably 2:11-5:1, b) totally removing the oxidation product of the metal reductant to obtain SiOx/Si composite particles, and c) coating the SiOx/Si composite particles with carbon to obtain the SiOx/Si/C composite material.

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