skip to main content

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

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.
Authors:
;
Publication Date:
OSTI Identifier:
6395553
Report Number(s):
US 4948684; A
PPN: US s 7-235127
Resource Type:
Patent
Resource Relation:
Patent File Date: 23 Aug 1988
Country of Publication:
United States
Language:
English
Subject:
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