Storage element for a solid electrolyte battery

Patent metadata

Field	Value
Publication number	US-9660256-B2
Application number	US-201214343852-A
Country	US
Kind code	B2
Filing date	Sep 4, 2012
Priority date	Sep 27, 2011
Publication date	May 23, 2017
Grant date	May 23, 2017

Abstract

A storage element for a solid electrolyte battery is provided, having a main member including a porous ceramic matrix in which particles that are made of a first metal and/or a metal oxide and jointly form a redox couple are embedded. The storage element further includes particles made of another metal and/or an associated metal oxide, the other metal being electrochemically more noble than the first metal.

First claim

The invention claimed is:

1. A storage element for a solid electrolyte battery, comprising:
a main element composed of a porous ceramic matrix comprising first particles embedded therein, the first particles comprising at least one of particles of a first metal and particles of a first metal oxide of a redox pair,
wherein the storage element comprises further particles comprising at least one of particles of a further metal and particles of an associated metal oxide, wherein the further metal is more chemically noble than the first metal,
wherein the proportion by volume of the first particles is more than 50% by volume of the solids volume of the storage element, and
wherein the storage element comprises alternating layers of ceramic matrix with embedded first particles and layers of the further particles.

2. The storage element as claimed in claim 1 ,
wherein the further metal has a different diffusion velocity than the first metal in an alloy of the first metal and the further metal.

3. The storage element as claimed in claim 1 ,
wherein the storage element has a pore volume of less than 50% by volume of its total volume.

4. The storage element as claimed claim 1 ,
wherein the first metal is Fe.

5. The storage element as claimed claim 1 ,
wherein the further metal is Ni.

6. The storage element as claimed claim 1 ,
wherein the ceramic matrix is an oxidic ceramic.

7. The storage element as claimed in claim 1 ,
wherein the ceramic matrix is selected from the group consisting of (Y,Sc,Zr)O 2 , (Gd,Ce)O 2 , Al s O 3 , MgO, TiO 2 , and (La,Sr,Ca,Ba,Ce)(Fe,Ti,Cr,Ga,Co,Mn)O 3 .

8. The storage element as claimed in claim 1 , wherein the first metal is selected from the group consisting of nickel, copper, silver, gold, platinum, and palladium.

9. A storage element for a solid electrolyte battery, comprising:
a main element comprising a porous ceramic matrix comprising first particles embedded therein, the first particles comprising at least one of particles of a first metal and particles of a first metal oxide of a redox pair; and
further particles comprising particles of a further metal, wherein the further metal is more chemically noble than the first metal;
wherein the storage element comprises alternating layers of the porous ceramic matrix with the first particles and layers of the further particles.

10. A storage element for a solid electrolyte battery, comprising:
a main element comprising a porous ceramic matrix comprising discrete spherical first particles embedded therein, the discrete spherical first particles comprising at least one of discrete spherical particles of a first metal and discrete spherical particles of a first metal oxide of a redox pair; and
further discrete spherical particles comprising particles of a further metal, wherein the further metal is more chemically noble than the first metal,
wherein the storage element comprises alternating layers of the porous ceramic matrix with the discrete spherical first particles and layers of the further discrete spherical particles.

Assignees

• Benkert Katrin
• Schuh Carsten
• Soller Thomas
• Siemens Ag

Inventors

• Benkert Katrin
• Schuh Carsten
• Soller Thomas

Classifications

• H01M4/803

  of only powdered material · CPC title

• H01M10/39

  working at high temperature · CPC title

• H01M2004/021

  Physical characteristics, e.g. porosity, surface area · CPC title

• H01M4/38 Primary

  of elements or alloys · CPC title

• H01M4/523

  for non-aqueous cells (H01M4/525 takes precedence) · CPC title