Method for the production of a porous element, and cell of a rechargeable oxide battery
AssigneeSiemens Aktiengesellschaft
InventorsInes Becker, Horst Greiner
Life of this patent
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Abstract
A method for producing a porous element is presented. A powdery metal-ceramic composite material is produced. The composite material has a metal matrix and a ceramic portion amounting to less than 25 percent by volume. The metal matrix is at least partially oxidized to obtain a metal oxide. The metal-ceramic composite material is grinded and mixed with powdery ceramic supporting particles to obtain a metal-ceramic/ceramic mixture. The metal-ceramic/ceramic mixture is shaped into the porous element. The porous element can be used as an energy storage medium in a battery.
Claims9
A method for producing a porous element, comprising:
- producing a powdered metal-ceramic composite material comprising a metal matrix and a ceramic portion;
- at least partially oxidizing the metal matrix to a metal oxide;
- grinding the metal-ceramic composite material;
- mixing the ground metal-ceramic composite material with powdered ceramic supporting particles into a metal-ceramic/ceramic mixture;
- and
- shaping the metal-ceramic/ceramic mixture into the porous element,
- wherein particles of the metal-ceramic composite material are supported by the ceramic supporting particles in such a way that the particles of the metal-ceramic composite material do not lie on one another, and
- wherein a uniform porosity of the porous element is maintained by the ceramic supporting particles to prevent sintering and melting of the particles of the metal-ceramic composite material.
Dependencies are inferred from the claim text.