Electrochemical battery
US-9005826-B2 · Apr 14, 2015 · US
Storage structure of an electrical energy storage cell
US9728774B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9728774-B2 |
| Application number | US-201314411012-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 22, 2013 |
| Priority date | Jun 29, 2012 |
| Publication date | Aug 8, 2017 |
| Grant date | Aug 8, 2017 |
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Abstract
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A storage structure of an electrical metal-air energy storage cell is provided including an active storage material and an inert material, wherein particles of the inert material have an aspect ratio of less than 0.7, and wherein subregions of the inert particles are incorporated in a grain volume of grains of the active storage material.
First claim
Opening claim text (preview).
The invention claimed is: 1. A storage structure of an electrical metal/air energy storage cell comprising an active storage material and an inert material, wherein particles of the inert material comprise a minor diameter of less than 200 nm and an aspect ratio less than 0.7, and wherein the particles are incorporated into grains of the active storage material and wherein the particles are effective to support the grains and to space the grains apart from each other, thereby forming pore channels within the active storage material. 2. The storage structure as claimed in claim 1 , wherein a wetting angle between the active storage material and the inert material is greater than or equal to 90°. 3. The storage structure as claimed in claim 1 , wherein the active storage material comprises iron and/or iron oxide. 4. The storage structure as claimed in claim 1 , wherein the inert material is based on zirconia, yttria-stabilized zirconia, calcium oxide, magnesium oxide, alumina, yttria or combinations thereof. 5. The storage structure as claimed in claim 1 , wherein the proportion by volume of the inert material in the volume of the storage structure is less than 30%. 6. The storage structure as claimed in claim 1 , wherein the proportion by volume of the active storage material in the volume of the storage structure is greater than 50%. 7. A process for producing a storage structure of an electrical metal/air storage cell, comprising: mixing an active storage material with an inert material, wherein particles of the inert material comprise a minor diameter of less than 200 nm and an aspect ratio less than 0.7, producing a green body from the mixture, introducing the green body into the storage cell, operating the storage cell for at least one charging and discharging operation at a process temperature of more than 500° C. after which the particles are incorporated into grains of the active storage material and are effective to support the grains and to space the grains apart from each other, thereby forming pore channels within the active storage material. 8. The storage structure as claimed in claim 1 , wherein the proportion by volume of the inert material in the volume of the storage structure is less than 20%. 9. The storage structure as claimed in claim 1 , wherein the proportion by volume of the active storage material in the volume of the storage structure is greater than 60%. 10. A storage structure of an electrical metal/air energy storage cell comprising an active storage material and an inert material, wherein particles of the inert material are characterized by an aspect ratio from 0.2 to less than 0.7, and wherein the particles are incorporated into grains of the active storage material and wherein the particles are effective to support the grains and to space the grains apart from each other, thereby forming pore channels within the active storage material.
Assignees
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Classifications
- H01M12/08Primary
composed of a half-cell of a fuel-cell type and a half-cell of the secondary-cell type · CPC title
of elements or alloys · CPC title
- H01M4/364Primary
as mixtures · CPC title
- H01M4/0471Primary
involving thermal treatment, e.g. firing, sintering, backing particulate active material, thermal decomposition, pyrolysis · CPC title
Selection of inactive substances as ingredients for active masses, e.g. binders, fillers · CPC title
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- What does patent US9728774B2 cover?
- A storage structure of an electrical metal-air energy storage cell is provided including an active storage material and an inert material, wherein particles of the inert material have an aspect ratio of less than 0.7, and wherein subregions of the inert particles are incorporated in a grain volume of grains of the active storage material.
- Who is the assignee on this patent?
- Siemens Ag
- What technology area does this patent fall under?
- Primary CPC classification H01M12/08. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Aug 08 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).