Title: Block graft copolymer binders and their use in silicon-containing anodes of lithium-ion batteries

Abstract

A graft copolymer composition comprising the following structure: wherein: Ax represents a polymer backbone having a number of polymerized monomer units x; [By] represents a multiplicity of a graft polymer side chain having a number of polymerized monomer units y, and at least a portion of the monomer units in By contains a group —C(O)OM, with M independently selected from H and alkali metals; [C] represents a multiplicity of positions on the polymer backbone Ax where the graft polymer side chain B or any other graft polymer side chain is not attached; the subscript w represents a grafting density of the group By, wherein w is an integer within a range of 10-50%; and the subscript z represents a density of the group C, wherein z=(100−w) %. The invention is also directed to lithium-ion batteries in which the above-described composition is incorporated in an anode of the battery.

Inventors:

Saito, Tomonori; Cao, Pengfei; Nanda, Jagjit; Abdelmalak, Michael Naguib

Issue Date:

2021-05-11

Research Org.:

Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1823949

Patent Number(s):

11005101

Application Number:

15/958,181

Assignee:

UT-Battelle, LLC (Oak Ridge, TN)

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08B - POLYSACCHARIDES

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B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES

B82Y30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08B - POLYSACCHARIDES

C08B37/003 - {Chitin, i.e. 2-acetamido-2-deoxy-

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08F - MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS

C08F220/06 - Acrylic acid
C08F2438/03 - Use of a di- or tri-thiocarbonylthio compound, e.g. di- or tri-thioester, di- or tri-thiocarbamate, or a xanthate as chain transfer agent, e.g . Reversible Addition Fragmentation chain Transfer [RAFT] or Macromolecular Design via Interchange of Xanthates [MADIX]
C08F251/00 - Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof
C08F293/005 - {using free radical "living" or "controlled" polymerisation, e.g. using a complexing agent}

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08L - COMPOSITIONS OF MACROMOLECULAR COMPOUNDS

C08L2203/20 - use in electrical or conductive gadgets
C08L33/02 - Homopolymers or copolymers of acids
C08L5/08 - Chitin

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY

H01M10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes
H01M2004/027 - {Negative electrodes}
H01M4/133 - Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
H01M4/134 - Electrodes based on metals, Si or alloys
H01M4/362 - {Composites}
H01M4/622 - {being polymers}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

Y02E60/10 - Energy storage

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DOE Contract Number:  

AC05-00OR22725

Resource Type:

Patent

Resource Relation:

Patent File Date: 04/20/2018

Country of Publication:

United States

Language:

English