Alkaline zinc battery having improved shelf-life, rechargeability, charge retention and capacity retention

Patent · Tue Aug 14 00:00:00 EDT 1990

OSTI ID:6395553

Dantam, T M; Jones, R A

This paper discusses an improvement in an alkaline zinc galvanic rechargeable cell comprising a zinc electrode having a copper-containing conductor embedded in a zinc-rich active material, a counterelectrode spaced from the zinc electrode, and a concentrated, aqueous alkaline electrolyte permeating the active material and bridging the space between the electrodes. The improvement comprises the electrolyte including sufficient benzotriazole to suppress dissolution of the copper from the conductor when the zinc electrode is substantially fully discharged and thereby extend the shelf-life and improve the rechargeability and charge retention of the cell following prolonged periods in such discharged state.

• Assignee: General Motors Corp., Detroit, MI (USA)
• Patent Number(s): US 4948684; A
• Application Number: PPN: US s 7-235127
• OSTI ID: 6395553
• Resource Relation: Patent File Date: 23 Aug 1988
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
METAL-METAL BATTERIES
COPPER
ALKALINE EARTH METALS
BATTERY CHARGING
DESIGN
SERVICE LIFE
ZINC
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
ELEMENTS
METALS
TRANSITION ELEMENTS
250901* - Energy Storage- Batteries- Design & Development
250903 - Energy Storage- Batteries- Materials
Components
& Auxiliaries