Separator for electrochemical high temperature cell
AssigneeVarta Batterie Aktiengesellschaft
InventorDieter Kunze
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Abstract
A separator for electrochemical high temperature cells having solid positive and negative electrodes and a molten liquid electrolyte formed through a poured accumulation of ceramic particles in which the electrolyte is mainly fixated. The porosity of the accumulation is especially high when there is added to the voids in the accumulation of particles also their own intrinsic porosity, to the degree that this consists of open pores. By using ion conducting particles, the ion penetration can be further enhanced.
Claims15
Separator for electrochemical high temperature cells having a solid positive electrode, a solid negative electrode, and a molten liquid electrolyte which is mainly fixated in the separator, the electrodes being subject to volume changes caused by reaction and thermal expansion, wherein
- the separator is formed by an accumulation of particles of ceramic material, said accumulation having been formed by pouring the particles into the previously formed space to be occupied by the separator, thereby producing a coarsely dispersed solid phase capable of absorbing the mechanical loads due to said volume changes.
Separator for electrochemical high temperature cells having a solid positive electrode, a solid negative electrode, and a molten liquid electrolyte which is mainly fixated in the separator wherein
- the separator is formed by a fill of irregular particles of ceramic material poured into a previously defined free space.
Dependencies are inferred from the claim text.