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US 9,825,282 B2Granted
Storage element and process for the production thereof
AssigneeSiemens Aktiengesellschaft
InventorsCarsten Schuh, Thomas Soller
Life of this patent
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Abstract
A storage element for a solid electrolyte battery is provided, having a main member of a porous ceramic matrix in which particles, that are made of a metal and/or a metal oxide and jointly form a redox couple, are embedded, the particles having a lamellar shape.
Claims20
A storage element for a solid electrolyte battery, comprising
- a main body made of a porous ceramic matrix in which particles of a metal and/or a metal oxide are incorporated and occupy a volume that is less than a volume of the ceramic matrix and which together form a redox pair,
- wherein the particles have a platelet-like form with an aspect ratio of more than 10, wherein the aspect ratio is a ratio of a long axis and a short axis of the particles.
A process for producing a storage element for a solid electrolyte battery, comprising:
- shaping a slip of ceramic particles and particles of a metal and/or a metal oxide distinct from the ceramic particles which together form a redox pair to form a green body, which is subsequently sintered, and
- separating the particles of metal and/or metal oxide based on sintering the ceramic particles together,
- wherein platelet-like particles of metal and/or metal oxide are used.
The storage element as claimed in 8, wherein the redox-inert material comprises A12O3, MgO or ZrO2.
A storage element for a solid electrolyte battery, comprising
- a main body made of a porous ceramic matrix comprising ceramic particles and particles of a metal and/or a metal oxide which together form a redox pair are incorporated,
- wherein the particles of the metal and/or the metal oxide have a platelet-like form and a median grain size d50 of at least 10 μm;
- and wherein a portion of a surface area of the particles of the metal and/or the metal oxide is coated with the ceramic particles to prevent sintering of the particles of metal and/or metal oxide.
Dependencies are inferred from the claim text.