Brown, Boveri & Cie Ag

Asea Brown Boveri Ag

Karl Reiss

Stefan Mennicke

Reinhard Knodler

Susanne Terharn

Werner Buehler

Kurt Liebermann

A sodium-sulphur electrochemical storage cell is bounded externally by a metallic housing, which has a ternary inexpensive corrosion-protective coating formed of an alloy with essential components consisting of aluminum, chromium and iron.

Electrochemical storage cell

Electrochemical storage cell based on sodium and sulfur with an anode space and a cathode space which are separated from each other by a solid electrolyte and are bounded at least in some places by a metallic housing, and a sulfur electrode formed of a fiber-like material impregnated with sulfur arranged within the cathode space. An auxiliary substance which decomposes during charging of the cell to produce ternary sodium sulfide is arranged in the cathode space at least in the boundary regions between the solid electrolyte and the sulfur electrode.

Electrochemical storage cell of the alkali metal and chalcogen type with at least one anode chamber and one cathode chamber which are separated from each other by an alkali ion-conducting solid electrolyte and are bounded at least in some regions by a metallic housing, the solid electrolyte being fastened at its open end to the housing via a connecting element. At least one connecting element as a pressure ring and at least one compensating ring taking up the forces emanating from the pressuring ring are fastened at the open end of the solid electrolyte.

Electrochemical storage cell of the alkali metal and chalcogen type

Method for the manufacture of an electrochemical storage cell of the sodium and sulfur type, with at least one anode space and one cathode space as well as an alkali ion conducting solid electrolyte separating the two, where at least one cathodic current collector and one electron-conducting matrix material are arranged in the cathode space. The invention is characterized by the features that in the cathode space at least one strongly anisotropic felt is inserted with the principal fiber direction parallel to the solid electrolyte; the felt is impregnated with at least one dissolved duromer; and thereupon a larger amount of the duromer is collected in the vicinity of the cathodic current collector; and the duromer is subsequently coked.

Method for the manufacture of an electrochemical storage cell as well as

Electrochemical storage cell based on alkali metal and chalcogen as reactants with an anode space and a cathode space separated by an alkali ion conducting solid electrolyte wall and bounded by a cell wall of light metal such as aluminum. A strongly adhering metal coating is applied to the area of the light metal wall in contact with one of the reactants. The metal coating chemically reacts to form a sulfide without materially affecting conductivity of the cell wall of light metal and without material increase in the internal resistance of the storage cell.

Growing community of inventors

Muhlhausen-Rettigheim, Germany

Karl Reiss