Network of metal fibers, method for producing a network of metal fibers, electrode and battery

Patent metadata

Field	Value
Publication number	US-12489135-B2
Application number	US-201917260420-A
Country	US
Kind code	B2
Filing date	Jul 16, 2019
Priority date	Jul 17, 2018
Publication date	Dec 2, 2025
Grant date	Dec 2, 2025

Abstract

A network of metal fibers includes a plurality of metal fibers fixed to one another; wherein at least some of the plurality of metal fibers have a length of 1.0 mm or more, a width of 100 μm or less and a thickness of 50 μm or less. A method includes producing a plurality of metal fibers by melt spinning; providing a loose network of metal fibers; and fixating the plurality of metal fibers to one another.

First claim

What is claimed is:

1 . A network of metal fibers, comprising:
a plurality of entangled metal fibers being entangled with one another and in a metastable condition and not in thermodynamic equilibrium at ambient temperatures; wherein the plurality of entangled metal fibers are subjected to a temperature of between 10 to 95% of a melting point of a material of the plurality of entangled metal fibers to fix the plurality of entangled metal fibers to one another and establish a network of fixed metal fibers; wherein the fixed metal fibers in the network of fixed metal fibers have a length of 1.0 mm or more, a width of 100 μm or less and a thickness of 50 μm or less.

2 . The network according to claim 1 , wherein the fixed metal fibers are in electrical contact with one another.

3 . The network according to claim 1 , wherein at least one or more of the entangled metal fibers of the plurality of entangled metal fibers are amorphous.

4 . The network according to claim 1 , wherein at least two or more of the fixed metal fibers in the network of fixed metal fibers are sintered to one another.

5 . The network according to claim 1 , wherein the plurality of entangled metal fibers are obtainable by subjecting molten material of the plurality of entangled metal fibers to a cooling rate of 102 K·min-1 or higher by melt spinning.

6 . The network according to claim 1 , wherein each of the fixed metal fibers is in contact with one or more other fixed metal fibers in the network of fixed metal fibers.

7 . The network according to claim 1 , wherein the network is an unordered network.

8 . The network according to claim 1 , wherein the network of fixed metal fibers has open pores between the fixed metal fibers in the network of fixed metal fibers.

9 . The network according to claim 1 , wherein at least one or more of the fixed metal fibers of the network of fixed metal fibers are at least partially coated.

10 . The network according to claim 1 , wherein points of contact between the fixed metal fibers are distributed in an unordered or ordered manner throughout a three-dimensional structure of the network of fixed metal fibers.

11 . The network according to claim 1 , wherein at least some of the metal fibers of the plurality of metal fibers are nanocrystalline.

12 . The network according to claim 1 , wherein the network of fixed metal fibers is an ordered network of fixed metal fibers.

Assignees

• Max Planck Gessellschaft Zur Foerderung Der Wissenchaften E V
• Univ Stuttgart
• Max Planck Gesellschaft

Inventors

• Hackner Maximilian
• Jahnke Timotheus
• Burghard Zaklina
• Micoulet Alexandre
• Spatz Joachim P
• Möller Martin

Classifications

• B22F1/08

  Metallic powder characterised by particles having an amorphous microstructure · CPC title

• B22F1/062

  Fibrous particles · CPC title

• B22F1/16

  Metallic particles coated with a non-metal (coated with lubricating or binding agents or with organic material B22F1/10) · CPC title

• H01M10/0525

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

• H01M4/806

  Nonwoven fibrous fabric containing only fibres · CPC title