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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 10944107 B1

PDFFull Text
Date of Patent:
Mar. 09, 2021

Filed:

Jun. 05, 2018

Methods for the preparation and use of positive electrode materials coated with carbon in lithium secondary batteries

Applicants:

Hydro-quebec, Montreal, CA;

Sei Corporation, Tsu, JP;

Inventors:

Karim Zaghib, Longueuil, CA;

Abdelbast Guerfi, Brossard, CA;

Pierre Hovington, Boucherville, CA;

Takehiko Sawai, Tsu, JP;

Shinji Saito, Tsu, JP;

Kazunori Urao, Tsu, JP;

Assignee:

HYDRO-QUÉBEC, Québec, CA;

Attorney:

Buchanan Ingersoll & Rooney P.C.

Primary Examiner:

Raymond Alejandro

Int. Cl.
CPC ...
H01M 4/13 (2010.01); H01M 4/58 (2010.01); H01M 4/62 (2006.01); H01M 4/136 (2010.01); H01M 4/04 (2006.01); H01M 4/1397 (2010.01); H01M 4/36 (2006.01); H01M 4/1391 (2010.01); H01M 4/1393 (2010.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 4/587 (2010.01); H01M 4/485 (2010.01); H01M 4/66 (2006.01); H01M 10/052 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/5825 (2013.01); H01M 4/0402 (2013.01); H01M 4/043 (2013.01); H01M 4/0428 (2013.01); H01M 4/0471 (2013.01); H01M 4/136 (2013.01); H01M 4/1391 (2013.01); H01M 4/1393 (2013.01); H01M 4/1397 (2013.01); H01M 4/366 (2013.01); H01M 4/485 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/587 (2013.01); H01M 4/623 (2013.01); H01M 4/625 (2013.01); H01M 4/661 (2013.01); H01M 10/052 (2013.01); H01M 2004/028 (2013.01); H01M 2220/20 (2013.01); Y02E 60/10 (2013.01);
Abstract

A positive-electrode material for a lithium secondary battery is provided. The material includes a lithium oxide compound or a complex oxide as reactive substance. The material also includes at least one type of carbon material, and optionally a binder. A first type of carbon material is provided as a coating on the reactive substance particles surface. A second type of carbon material is carbon black. And a third type of carbon material is a fibrous carbon material provided as a mixture of at least two types of fibrous carbon material different in fiber diameter and/or fiber length. Also, a method for preparing the material as well as lithium secondary batteries including the material is provided.

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