Electrodes Comprising Metal Introduced Into a Solid-State Electrolyte

Patent metadata

Field	Value
Publication number	US-2020036037-A1
Application number	US-201816491465-A
Country	US
Kind code	A1
Filing date	Feb 2, 2018
Priority date	Mar 9, 2017
Publication date	Jan 30, 2020
Grant date	—

Abstract

Various embodiments include an electrode comprising: a solid electrolyte; and a metal M selected from the group of metals consisting of: Cu, Ag, Au, and Pd. The solid electrolyte is selected from the group consisting of: germanium disulfide, germanium diselenide, germanium sulfide, germanium selenide, tungsten trioxide, silver(I) sulfide, silicon dioxide, yttrium-stabilized zirconium(IV) oxide, polysulfone, polybenzoxazole, and polyimide.

First claim

What is claimed is:

1 . An electrode comprising:
a solid electrolyte; and a metal M selected from the group of metals consisting of: Cu, Ag, Au, and Pd; wherein the solid electrolyte comprises a compound selected from the group consisting of: germanium disulfide, germanium diselenide, germanium sulfide, germanium selenide, tungsten trioxide, silver(I) sulfide, silicon dioxide, yttrium-stabilized zirconium(IV) oxide, polysulfone, polybenzoxazole, and polyimide.

2 . The electrode as claimed in claim 1 , wherein the electrode comprises a gas diffusion electrode.

3 . The electrode as claimed in claim 1 , wherein the solid electrolyte comprises at least one of: germanium disulfide, germanium diselenide, germanium sulfide, or germanium selenide.

4 . The electrode as claimed in claim 1 , wherein the metal M has a solubility of at least 0.1 mol/L in the solid electrolyte at a temperature of 25° and standard pressure.

5 . The electrode as claimed in claim 1 , wherein the solid electrolyte stabilizes a cation of the metal M.

6 - 7 . (canceled)

8 . A method for producing an electrode, the method comprising:
applying a metal M to a solid electrolyte; or adding a solid electrolyte to a salt solution of a metal M so the metal M is deposited on and diffuses into the solid electrolyte by reduction; or depositing a solid electrolyte onto an electrode comprising a metal M; or depositing a solid electrolyte onto particles of a metal M to give an electrode; wherein the solid electrolyte is selected from the group consisting of: germanium disulfide, germanium diselenide, germanium sulfide, germanium selenide, tungsten trioxide, silver(I) sulfide, silicon dioxide, yttrium-stabilized zirconium(IV) oxide, polysulfone, polybenzoxazole, and polyimide; and the metal M is selected from the group of metals consisting of: Cu, Ag, Au, and Pd.

9 . The process as claimed in claim 8 , wherein the solid electrolyte is deposited on particles of the metal M and the particles are processed further to give an electrode, wherein the particles of the metal M are nano- and/or microparticles.

10 . The process as claimed in claim 9 , wherein the particles on which the solid electrolyte has been deposited are heat-treated.

11 . The process as claimed in claim 8 , wherein the metal M is applied to and diffuses into the solid electrolyte, or wherein the solid electrolyte is added to a salt solution of the metal M and the metal M is deposited on and diffuses into the solid electrolyte by reduction, wherein the inward diffusion is effected by the action of heat and/or light.

12 . An electrolysis cell comprising:
an electrode comprising: a solid electrolyte; and a metal M selected from the group of metals consisting of: Cu, Ag, Au, and Pd; wherein the solid electrolyte comprises a compound selected from the group consisting of: germanium disulfide, germanium diselenide, germanium sulfide, germanium selenide, tungsten trioxide, silver(I) sulfide, silicon dioxide, yttrium-stabilized zirconium(IV) oxide, polysulfone, polybenzoxazole, and polyimide.

13 . (canceled)

Assignees

• Siemens Ag

Inventors

• Krause Ralf
• Reller Christian
• Schmid Günter
• Schmid Bernhard
• Taroata Dan

Classifications

• C25B1/14

  Alkali metal compounds · CPC title

• C25B11/04 Primary

  characterised by the material · CPC title

• H01M10/0562 Primary

  Solid materials · CPC title

• C25B1/00

  Electrolytic production of inorganic compounds or non-metals · CPC title

• C25B11/035

  Chemistry & Metallurgy · mapped topic