Rechargeable galvanic cell with zinc electrode and auxiliary structure

Patent · Tue Aug 02 04:00:00 EDT 1977

OSTI ID:7295708

Benczur-Uermoessy, G; von Benda, K; Haschka, F

A rechargeable galvanic cell has a housing containing at least one negative zinc electrode, at least one positive metal oxide or oxygen electrode, an alkaline electrolyte, at least one electrically conductive auxiliary structure exhibiting low hydrogen overvoltage for cathodic hydrogen evolution (which is not conductively connected with the electrodes), and at least one microporous separator for separating the auxiliary structure from at least one of the electrodes. The structure simultaneously acts as an auxiliary electrode to effect after discharging of the zinc electrode when connected to it, and as a dendrite barrier to prevent short-circuiting between the negative and positive electrodes during operation of the cell. This structure is arranged between one positive electrode and one negative electrode. 7 figures.

• Assignee: Deutsche Automobilgesellschaft mBh, Firma
• Patent Number(s): US 4039729
• OSTI ID: 7295708
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250901* -- Energy Storage-- Batteries-- Design & Development
BATTERY SEPARATORS
CHALCOGENIDES
CRYOGENIC FLUIDS
DESIGN
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
ELEMENTS
ENERGY STORAGE SYSTEMS
FLUIDS
HYDROGEN COMPOUNDS
HYDROXIDES
METAL-GAS BATTERIES
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
ZINC-AIR BATTERIES