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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 11005094 B1

PDFFull Text
Date of Patent:
May. 11, 2021

Filed:

Mar. 07, 2018

Electrochemically stable elastomer-encapsulated particles of anode active materials for lithium batteries

Applicant:

Nanotek Instruments, Inc., Dayton, OH (US);

Inventors:

Baofei Pan, Dayton, OH (US);

Hui He, Dayton, OH (US);

Aruna Zhamu, Springboro, OH (US);

Bor Z. Jang, Centerville, OH (US);

Assignee:

Global Graphene Group, Inc., Dayton, OH (US);

Attorney:
Primary Examiner:

Cynthia H Kelly

Assistant Examiner:

Monique M Wills

Int. Cl.
CPC ...
H01M 4/00 (2006.01); H01M 4/36 (2006.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01); H01M 4/38 (2006.01); H01M 4/42 (2006.01); H01M 4/44 (2006.01); H01M 4/46 (2006.01); H01M 4/48 (2010.01); H01M 4/485 (2010.01); H01M 4/505 (2010.01); H01M 4/58 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/364 (2013.01); H01M 4/366 (2013.01); H01M 4/382 (2013.01); H01M 4/386 (2013.01); H01M 4/387 (2013.01); H01M 4/42 (2013.01); H01M 4/44 (2013.01); H01M 4/463 (2013.01); H01M 4/483 (2013.01); H01M 4/485 (2013.01); H01M 4/505 (2013.01); H01M 4/581 (2013.01); H01M 4/5815 (2013.01); H01M 4/62 (2013.01); H01M 4/622 (2013.01); H01M 4/625 (2013.01); H01M 10/0525 (2013.01); H01M 2004/027 (2013.01);
Abstract

Provided is a lithium battery anode electrode comprising multiple particulates of an anode active material, wherein at least a particulate is composed of one or a plurality of particles of an anode active material being encapsulated by a thin layer of inorganic filler-reinforced elastomer having from 0.01% to 50% by weight of an inorganic filler dispersed in an elastomeric matrix material based on the total weight of the inorganic filler-reinforced elastomer, wherein the encapsulating thin layer of inorganic filler-reinforced elastomer has a thickness from 1 nm to 10 μm, a fully recoverable tensile strain from 2% to 500%, and a lithium ion conductivity from 10to S/cm to 5×10S/cm and the inorganic filler has a lithium intercalation potential from 1.1 V to 4.5 V (preferably 1.2-2.5 V) versus Li/Li. The anode active material is preferably selected from Si, Ge, Sn, SnO, SiO, CoO, MnO, etc.

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