Granted Patent
B2
US 12,469,849 · App. 19/012,784 · Granted Nov 11, 2025
Nanostructured materials for battery applications
Inventors:
Yimin Zhu (Fremont, CA); Jay L. Goldman (Mountain View, CA); Jason Hartlove (Los Altos, CA); Hans Jurgen Hofler (Sunnyvale, CA)
Assignee:
OneD Material, Inc.
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Abstract
The present invention relates to nanostructured materials (including nanowires) for use in batteries. Exemplary materials include carbon-comprising, Si-based nanostructures, nanostructured materials disposed on carbon-based substrates, and nanostructures comprising nanoscale scaffolds. The present invention also provides methods of preparing battery electrodes, and batteries, using the nanostructured materials.
Claims (44)
1 . A battery slurry additive comprising:
a plurality of Si-based nanoscale scaffolds disposed on particles of a carbon-based powder substrate comprising carbon black or graphite and forming a porous network,
wherein the particles of the carbon-based powder substrate are between 5 microns and 50 microns,
wherein the plurality of Si-based nanoscale scaffolds have a core-shell structure,
wherein the plurality of Si-based nanoscale scaffolds comprise nanowires with at least one cross-sectional dimension less than 100 nm,
wherein said porous network comprises mesopores and macropores, and
wherein said porous network can accommodate volume changes associated with lithiation and delithiation during repeated charge/discharge cycles of a battery anode electrode.
2 . The battery slurry additive as claimed in claim 1 , wherein the Si-based nanoscale scaffolds comprise at least 50% silicon.
3 . The battery slurry additive as claimed in claim 1 , wherein the Si-based nanoscale scaffolds comprise at least 95% silicon.
4 . The battery slurry additive as claimed in claim 1 , wherein the core of the Si-based nanoscale scaffolds comprise crystalline silicon.
5 . The battery slurry additive as claimed in claim 1 , wherein the shell of the Si-based nanoscale scaffolds comprise amorphous silicon or carbon.
6 . The battery slurry additive as claimed in claim 1 , wherein the Si-based nanoscale scaffolds comprise nanowires, nanorods, nanoparticles or nanofilms.
7 . The battery slurry additive as claimed in claim 1 , wherein the Si-based nanoscale scaffolds comprise nanoparticles with all dimensions less than 50 nm.
8 . The battery slurry additive as claimed in claim 1 , wherein the carbon-based powder substrate comprises at least about 90% carbon by mass.
9 . The battery slurry additive as claimed in claim 1 , wherein the carbon-based powder substrate comprises at least about 95% carbon by mass.
10 . The battery slurry additive as claimed in claim 1 , where the porous network is substantially free of micropores.
11 . The battery slurry additive as claimed in claim 1 , wherein the Si-based nanoscale scaffolds comprise a conductive polymer.
12 . The battery slurry additive as claimed in claim 11 , wherein the conductive polymer comprises one or more of polyvinylidene difluoride (PVDF), polypyrrole, polythiaphene, polyethylene oxide, polyacrylonitrile, poly (ethylene succinate), polypropylene, poly ((3-propiolactone), styrene butadiene rubber (SBR), carboxymethyl cellulose (CMC), and sulfonated fluoropolymers.
13 . The battery slurry additive as claimed in claim 1 , wherein the Si-based nanoscale scaffolds comprise an artificial solid electrolyte interphase (SEI).
14 . The battery slurry additive as claimed in claim 1 , wherein the Si-based nanoscale scaffolds are pre-lithiated.
15 . The battery slurry additive as claimed in claim 1 , wherein the Si-based nanoscale scaffolds have a core-shell-shell structure.
16 . The battery slurry additive of claim 1 , wherein the shell comprises a metal or a metal-oxide.
17 . The battery slurry additive of claim 1 , wherein the core comprises crystalline silicon and the shell comprises amorphous silicon.
18 . The battery slurry additive of claim 1 , wherein the nanowires are grown directly on and attached to the surface of the carbon-based powder substrate.
19 . The battery slurry additive of claim 1 , wherein the nanowires intertwine, interweave or overlap to form the porous network.
20 . A battery anode electrode for lithium-ion batteries, comprising:
(1) a battery slurry additive as claimed in claim 1 ; and
(2) a carbon-based material comprising graphite; and
(3) a binder,
wherein the battery anode electrode comprises 1 weight % to 80 weight % of said additive.
21 . The battery anode electrode as claimed in claim 20 , wherein the battery anode electrode comprises 5 weight % to 20 weight % of said Si-based nanoscale scaffolds.
22 . The battery anode electrode as claimed in claim 20 , wherein the battery anode electrode comprises 5 weight % to 30 weight % of said Si-based nanoscale scaffolds.
23 . The battery anode electrode as claimed in claim 20 , wherein the battery anode electrode comprises 5 weight % to 20 weight % of said additive.
24 . A battery anode electrode for lithium-ion batteries, comprising:
(1) a battery slurry additive as claimed in claim 1 ; and
(2) a carbon-based material comprising graphite; and
(3) a binder,
wherein the battery anode electrode comprises 5 weight % to 20 weight % of said Si-based nanoscale scaffolds.
25 . A battery comprising an anode electrode as claimed in claim 20 , a cathode electrode, a separator, and an electrolyte.
26 . The battery of claim 25 , wherein the electrolyte comprises one selected from the group consisting of an alkali metal salt dissolved in organic solvent, an alkali metal salt mixed with an ionically conducting polymer, and an alkali metal salt mixed with an ionically conducting inorganic material.
27 . The battery of claim 25 , wherein the battery is a Li-ion battery.
28 . A battery comprising an anode electrode as claimed in claim 24 , a cathode electrode, a separator, and an electrolyte.
29 . The battery of claim 28 , wherein the electrolyte comprises one selected from the group consisting of an alkali metal salt dissolved in organic solvent, an alkali metal salt mixed with an ionically conducting polymer, and an alkali metal salt mixed with an ionically conducting inorganic material.
30 . The battery slurry additive of claim 1 , wherein at least one of the nanowires comprises a semiconductor oxide.
Assignments (2)
CHANGE OF NAME
Recorded Jan 9, 2025
From: ONED MATERIAL LLC
To: ONED MATERIAL, INC.
Reel/Frame 069859/0103 →
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Jan 7, 2025
From: ZHU, YIMIN; GOLDMAN, JAY L.; HARTLOVE, JASON; HOFLER, HANS JURGEN
To: ONED MATERIAL LLC
Reel/Frame 069777/0028 →
Continuity (8)
Provisional Application
61255732
· Oct 28, 2009
Provisional Application
61221392
· Jun 29, 2009
Provisional Application
61179663
· May 19, 2009
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