Metal conducting coatings for anodes, methods of making and using same, and uses thereof

Patent metadata

Field	Value
Publication number	US-2023282837-A1
Application number	US-202118008384-A
Country	US
Kind code	A1
Filing date	Jun 7, 2021
Priority date	Jun 7, 2020
Publication date	Sep 7, 2023
Grant date	—

Abstract

In various examples, an anode, which may be for a metal ion-conducting electrochemical device, comprises a metal member; and a metal conducting coating, which may be an epitaxial (e.g., a homoepitaxial) metal conducing coating, disposed on at least a portion of the metal member (e.g., all portions of the metal member that would be or are in contact with the electrolyte of the metal ion-conducting electrochemical device). A metal conducting coating or an anode may be formed by electrodeposition in the presence of a field.

First claim

1 . An anode comprising:
a metal member; and an epitaxial metal conducting coating disposed on at least a portion of the metal member.

2 . The anode of claim 1 , wherein the metal conducting coating epitaxially templates deposition of the reduced form of the metal-ions of a metal ion-conducting electrochemical device.

3 . The anode of claim 1 , wherein the metal conducting coating comprises a metal chosen from lithium, sodium, potassium, calcium, magnesium, zinc, aluminum, and iron.

4 . The anode of claim 1 , wherein the metal conducting coating comprises a metal chosen from gold, silver, zirconium, titanium, iron, copper, and chromium or a metal alloy chosen from combinations of gold, silver, zirconium, titanium, iron, copper, and chromium.

5 . The anode of claim 1 , wherein the metal conducting coating is crystalline.

6 . The anode of claim 1 , wherein at least a portion or all of an exterior surface of the metal conducting coating have crystal facets.

7 . The anode of claim 1 , wherein the crystal facets are chosen from a (001) plane in hexagonal closest packed structure, a (111) plane in face-centered cubic structures, and a (110) plane in body-centered cubic structures.

8 . The anode of claim 1 , wherein the thickness of the metal conducting coating is from a monolayer up to and including 500 micrometers.

9 . The anode of claim 1 , wherein the metal conducting coating has a conductivity of 10 1 to 10 9 S/m.

10 . The anode of claim 1 , wherein the metal conducting coating is deposited by electrochemical deposition and the metal conducting coating is subjected to a field during deposition.

11 . A device comprising one or more anode(s) of claim 1 .

12 . The device of claim 11 , wherein the device is an electrochemical device.

13 . The device of claim 12 , wherein the electrochemical device is a battery, a supercapacitor, a fuel cell, an electrolyzer, or an electrolytic cell.

14 . The device of claim 13 , wherein the battery is an ion-conducting battery.

15 . The device of claim 14 , wherein the ion-conducting battery is a lithium-ion conducting battery, a potassium-ion conducting battery, a sodium-ion conducting battery, a calcium-ion conducting battery, a magnesium-ion conducting battery, a zinc-ion conducting battery, an aluminum-ion conducting battery, or an iron-ion conducting battery.

16 . The device of claim 11 , wherein the device is configured so that the conducting metal ions electrodeposit on at least a portion or all of the surface of the conducting coating in contact with the electrolyte forming an electrochemically deposited metal layer comprising one or more crystalline domain(s) or a crystalline metal layer.

17 . The device of claim 16 , wherein the electrochemically deposited metal layer has substantially bulk metal density.

18 . The device of claim 16 , wherein the electrochemically deposited metal layer comprises a plurality of metal layers.

19 . The device of claim 13 , wherein the battery exhibits one or more or all of the following:
the battery does not exhibit detectible dendritic growth and/or orphaning, a plating and/or stripping Coulombic efficiency of 95% or greater, 98% or greater, 99% or greater, or 99.5% or greater, a plating and/or stripping Coulombic efficiency of 95% or greater, 98% or greater, 99% or greater, or 99.5% or greater for 10,000 cycles or greater and/or at rate of 40 mA/cm 2 or greater.

20 . A method of making a metal conducting coating disposed on at least a portion of an exterior surface of a substrate comprising:
electrodepositing a metal layer on at least a portion of an exterior surface of a substrate in the presence of a field,
wherein a metal conducting coating disposed on at least a portion of an exterior surface of a substrate is formed.

21 . The method of claim 20 , wherein the field is a hydrodynamic field.

22 . The method of claim 21 , wherein the hydrodynamic field is generated by a mechanical force, an electric force, a magnetic force, or a combination thereof.

23 . The method of claim 21 , wherein the hydrodynamic field is produced by rotating the substrate; flow imposed by an external stirring device; application of an orthogonal magnetic field to ions moving in an electrolyte; magnetically rotated micro-/nano structures dispersed in an electrolyte; or programmed periodic squeezing of a battery pouch cell.

24 . The method of claim 23 , wherein the substrate is rotating such that the rate of the electrochemical deposition exceeds the mass transfer limit of the electrodeposition.

25 . The method of claim 20 , wherein the field comprises a component normal to the deposition substrate.

26 . The method of claim 20 , wherein the electrodeposition is carried out in an electrolyte solution.

27 . The method of claim 26 , wherein the electrodeposition electrolyte solution comprises one or more metal salt(s).

28 . The method of claim 20 , wherein the electrodeposition is carried out in an inert atmosphere.

29 . The method of claim 21 , wherein the hydrodynamic field results in formation of an at least partially aligned metal layer.

30 . The method of claim 29 , wherein the metal of the at least partially aligned metal layer comprises hexagonal crystalline domains, cubic crystalline domains, tetragonal crystalline domains, orthorhombic crystalline domains, monoclinic crystalline domains, triclinic crystalline domains, or the like, or a combination thereof.

31 . The method of claim 29 , wherein the at least partially aligned metal layer comprises a plurality of the metal platelets.

32 . The method of claim 29 , wherein the at least partially aligned metal layer has a thickness of 10 micrometers to 1 centimeter.

33 . The method of claim 20 , wherein the substrate is chosen from metals and metal alloys.

34 . An electrochemical device configured to provide a field that results in formation of one or more metal conducing coating(s) and/or one or more anode(s) of claim 1 .

35 . An electrochemical device configured to carry out a method of claim 20 .

Assignees

• Univ Cornell

Inventors

• Archer Lynden A
• Zheng Jingxu
• Yin Jiefu

Classifications

• H01M4/626 Primary

  Metals · CPC title

• H01M4/0452

  from solutions · CPC title

• C25D5/04

  Electroplating with moving electrodes · CPC title

• C25B11/069

  consisting of at least one single element and at least one compound; consisting of two or more compounds · CPC title

• C30B7/12

  by electrolysis · CPC title