Electrochemical cell and process

Patent metadata

Field	Value
Publication number	US-11145871-B2
Application number	US-201615776594-A
Country	US
Kind code	B2
Filing date	Nov 2, 2016
Priority date	Nov 16, 2015
Publication date	Oct 12, 2021
Grant date	Oct 12, 2021

Abstract

An electrochemical cell has a first volume exposed to respective surfaces of an anode and a cathode, the electrochemical cell also being provided with a steam inlet to allow steam into the first volume.

First claim

The invention claimed is:

1. An electrochemical cell comprising:
a first volume positioned between an anode and a cathode;
a steam inlet that allows steam into the first volume; and
a layer of solid oxide conducting material positioned to impede steam from the steam inlet from reaching the anode, wherein the first volume is positioned between the cathode and the layer of solid oxide conducting material; and
a nitride conductor comprised within the first volume between the cathode and the layer of solid oxide conducting material, and configured to receive steam from the steam inlet.

2. An electrochemical cell according to claim 1 wherein the layer of solid oxide conducting material comprises yttria stabilized zirconia.

3. An electrochemical cell according to claim 1 wherein the layer of solid oxide conducting material comprises scandia stabilized zirconia (ScSZ), or gadolinium doped ceria.

4. An electrochemical cell according to claim 1 wherein the layer of solid oxide conducting material comprises a perovskite material.

5. An electrochemical cell according to claim 1 wherein the cathode is a gas electrode, comprising a porous cathode and a second volume.

6. An electrochemical cell according to claim 1 wherein the anode is a gas electrode, comprising a porous anode and a third volume.

7. An electrochemical cell according to claim 1 wherein the steam inlet is provided with a steam diffuser.

Assignees

• Siemens Ag

Inventors

• Hughes Timothy

Classifications

• H01M8/222

  Fuel cells in which the fuel is based on compounds containing nitrogen, e.g. hydrazine, ammonia · CPC title

• H01M4/9033 Primary

  Complex oxides, optionally doped, of the type M1MeO3, M1 being an alkaline earth metal or a rare earth, Me being a metal, e.g. perovskites · CPC title

• H01M4/8605

  Porous electrodes · CPC title

• C25B13/07

  based on ceramics · CPC title

• C25B9/60

  Constructional parts of cells · CPC title