Nanotwin copper components

Patent metadata

Field	Value
Publication number	US-11901585-B2
Application number	US-202016953656-A
Country	US
Kind code	B2
Filing date	Nov 20, 2020
Priority date	Nov 23, 2019
Publication date	Feb 13, 2024
Grant date	Feb 13, 2024

Abstract

A method of forming a component can include electrochemically depositing a metallic material onto a carrier component to a thickness of greater than 50 microns. The metallic material can include crystal grains and at least 90% of the crystal grains can include nanotwin boundaries. The metallic material can include at least one of copper or silver.

First claim

What is claimed is:

1. A stock material, comprising:
a metallic material comprising crystal grains and having a thickness of greater than 50 microns; and
at least 90% of the crystal grains comprising nanotwin boundaries, wherein the crystal grains are equiaxial.

2. The stock material of claim 1 , wherein the metallic material comprises a continuous sheet having a length of at least 2 cm.

3. The stock material of claim 1 , wherein the metallic material comprises copper.

4. The stock material of claim 1 , wherein the metallic material comprises silver.

5. The stock material of claim 1 , wherein the metallic material comprises an alloy of copper and silver.

6. The stock material of claim 1 , wherein the crystal grains have an average spacing between nanotwin boundaries of less than 200 nanometers (nm).

7. The stock material of claim 1 , wherein at least 95% of the crystal grains comprise nanotwin boundaries.

8. The stock material of claim 1 , wherein the thickness is greater than 100 microns.

9. An electronic device, comprising:
a conductive component comprising a metallic material including crystal grains, the metallic material having a thickness of greater than 50 microns; and
at least 90% of the crystal grains comprising nanotwin boundaries, wherein the crystal grains are equiaxial, the metallic material having a hardness greater than 225 Hv.

10. The electronic device of claim 9 , wherein the conductive component is an electrically conductive component.

11. The electronic device of claim 10 , wherein the electrically conductive component comprises a charging receptacle.

12. The electronic device of claim 10 , wherein the electrically conductive component comprises an electrical connector between two electronic components.

13. The electronic device of claim 12 , wherein the two electronic components comprise printed circuit boards.

14. The electronic device of claim 10 , wherein the electrically conductive component comprises a battery.

15. The electronic device of claim 9 , wherein the conductive component is a thermally conductive component.

16. The electronic device of claim 15 , wherein the thermally conductive component comprises a support plate.

17. The electronic device of claim 15 , wherein the thermally conductive component comprises a non-planar shape and mechanically supports a component affixed to the thermally conductive component.

18. A battery, comprising:
an electrochemical cell comprising an electrolyte, an anode, and a cathode; and
a current collector electrically coupled to one of the anode or the cathode, the current collector comprising a metallic material including crystal grains, at least 90% of the crystal grains comprising nanotwin boundaries, wherein the crystal grains are equiaxial, and wherein the metallic material has a hardness greater than 225 Hv.

19. The battery of claim 18 , wherein the metallic material comprises at least one of copper or silver.

20. The battery of claim 18 , wherein the metallic material has a thickness of less than 10 microns.

21. The battery of claim 18 , wherein the electrochemical cell is a lithium-ion electrochemical cell.

Assignees

• Apple Inc

Inventors

• Li Hoishun
• Jou Herng-Jeng
• Yurko James A
• Kwok Wai Man Raymund
• Feinberg Zechariah D
• Wagman Daniel C
• Jol Eric S
• Esmaeili Hani

Classifications

• H01M50/531 Primary

  Electrode connections inside a battery casing · CPC title

• C22C5/06 Primary

  Alloys based on silver · CPC title

• C22C9/00

  Alloys based on copper · CPC title

• H01M10/0525

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

• B82Y30/00

  Nanotechnology for materials or surface science, e.g. nanocomposites · CPC title