Arrangement and method for storing electric energy in electrochemical cells with a large diameter and high storage capacity

摘要

An electrochemical cell assembly has electrochemical cells of large diameter and high storage capacity, making it particularly useful for stabilization of electric supply systems. The assembly includes at least one electrochemical cell composed of a layer of: a liquid metal or liquid metal alloy forming the cathode, a liquid electrolyte layer, and a layer of a liquid metal or liquid metalloid forming the anode. An electrically insulating inner tube is provided along the vertical axis of the assembly, the presence of which prevents the occurrence of the Tayler instability or other instabilities caused in the liquids by the current flow, and thus prevents the intermixing of the liquids. Another very efficient option for increasing the maximum current of the cell is that of conducting a current having a suitable direction and intensity through the interior of the inner tube.

主权项

1. An electrochemical assembly for storing electrical energy, comprising
an electrochemical cell, the electrochemical cell comprising: an anode made of a liquid metal or liquid metalloid, or a liquid metal or liquid metalloid alloy; a liquid electrolyte; and a cathode made of a liquid metal or liquid metalloid, or a liquid metal or liquid metalloid alloy, the liquids of the cathode, electrolyte and anode forming respective strata in a vertical direction due to differences in respective densities thereof, and an electrically insulating inner tube disposed within the strata along a vertical axis of the cell and spaced from an outer periphery of the liquids such that the liquids of the anode, electrolyte and cathode are arranged outside of the inner tube.