Nanowire structures and methods of manufacture thereof

Patent metadata

Field	Value
Publication number	US-2025012006-A1
Application number	US-202418793385-A
Country	US
Kind code	A1
Filing date	Aug 2, 2024
Priority date	Jul 23, 2018
Publication date	Jan 9, 2025
Grant date	—

Abstract

In an embodiment, metal-organic nanowires or nanofibers comprising polymer chains with around 100 or more repeat units are synthesized. The metal-organic nanowires or nanofibers are exposed to a reactive gas at a temperature in excess of around 100° C. and at a pressure in the range from around 0.001 to around 100 atmospheres.

First claim

1 . A ceramic nanowire arrangement, comprising:
a plurality of ceramic-comprising nanowires, each of the plurality of ceramic-comprising nanowires comprising (i) oxygen (O) and (ii) aluminum (Al) and/or magnesium (Mg), wherein: at least some of the plurality of ceramic-comprising nanowires are present as one or more bundles thereof, each of the one or more bundles having a diameter in a range of about 50 to 200 nm.

2 . The ceramic nanowire arrangement of claim 1 , wherein the plurality of ceramic-comprising nanowires comprises at least one nanowire selected from: Al 2 O 3 nanowires, MgO nanowires, Al—Mg—O nanowires, lithiated Al 2 O 3 nanowires, aluminum oxyhydroxide nanowires, and/or aluminum oxyfluoride nanowires.

3 . The ceramic nanowire arrangement of claim 1 , wherein the plurality of ceramic-comprising nanowires comprises at least one nanowire selected from: oxide nanowires, oxyhydroxide nanowires, nitride nanowires, oxynitride nanowires, fluoride nanowires, and/or oxyfluoride nanowires.

4 . The ceramic nanowire arrangement of claim 3 , wherein the at least one nanowire is (1) amorphous or (2) nanocrystalline with an average grain size below about 100 nm.

5 . The ceramic nanowire arrangement of claim 1 , wherein an average aspect ratio of the plurality of ceramic nanowires is greater than about 5.

6 . The ceramic nanowire arrangement of claim 5 , wherein the average aspect ratio is greater than about 20.

7 . The ceramic nanowire arrangement of claim 6 , wherein the average aspect ratio is in a range of about 40 to about 150.

8 . The ceramic nanowire arrangement of claim 1 , wherein at least one nanowire from the plurality of ceramic-comprising nanowires exhibits a length in a range from about 5 μm to about 100 μm.

9 . The ceramic nanowire arrangement of claim 1 , wherein at least one nanowire from the plurality of ceramic-comprising nanowires comprises lithium (Li).

10 . The ceramic nanowire arrangement of claim 1 , wherein the one or more bundles comprise polymer chains with about 100 or more repeat units.

11 . A ceramic membrane comprising the ceramic nanowire arrangement of claim 1 .

12 . A Li-ion battery, comprising:
an anode; a cathode; the ceramic membrane of claim 11 configured as a separator interposed between the anode and the cathode; and an electrolyte impregnating the separator.

Assignees

• Sila Nanotechnologies Inc
• Georgia Tech Res Inst

Inventors

• Yushin Gleb
• Turcheniuk Kostiantyn
• Wang Fujia

Classifications

• H01M50/434

  Ceramics · CPC title

• H01M50/44 Primary

  Fibrous material · CPC title

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• D06M11/34 Primary

  with oxygen, ozone or ozonides · CPC title