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Title: Rechargeable zinc cell with alkaline electrolyte which inhibits shape change in zinc electrode

An improved rechargeable zinc cell is described comprising a zinc electrode and another electrode such as, for example, a nickel-containing electrode, and having an electrolyte containing one or more hydroxides having the formula M(OH), one or more fluorides having the formula MF, and one or more carbonates having the formula M.sub.2 CO.sub.3, where M is a metal selected from the group consisting of alkali metals. The electrolyte inhibits shape change in the zinc electrode, i.e., the zinc electrode exhibits low shape change, resulting in an improved capacity retention of the cell over an number of charge-discharge cycles, while still maintaining high discharge rate characteristics.
Inventors:
 [1];  [2];  [3]
  1. (Berkeley, CA)
  2. (Orinda, CA)
  3. (Walnut Creek, CA)
Issue Date:
OSTI Identifier:
870083
Assignee:
Regents of University of California (Oakland, CA) LBNL
Patent Number(s):
US 5453336
Research Org:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA
Country of Publication:
United States
Language:
English
Subject:
rechargeable; zinc; cell; alkaline; electrolyte; inhibits; shape; change; electrode; improved; described; comprising; example; nickel-containing; containing; hydroxides; formula; oh; fluorides; mf; carbonates; metal; selected; consisting; alkali; metals; exhibits; resulting; capacity; retention; charge-discharge; cycles; maintaining; discharge; rate; characteristics; alkaline electrolyte; zinc electrode; electrolyte containing; alkali metal; alkali metals; metal selected; shape change; described comprising; charge cycle; rechargeable zinc; zinc cell; electrode exhibits; discharge cycle; discharge rate; inhibits shape; charge rate; nickel-containing electrode; improved capacity; improved rechargeable; charge-discharge cycle; /429/