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Title: Production of zinc pellets

Uniform zinc pellets are formed for use in batteries having a stationary or moving slurry zinc particle electrode. The process involves the cathodic deposition of zinc in a finely divided morphology from battery reaction product onto a non-adhering electrode substrate. The mossy zinc is removed from the electrode substrate by the action of gravity, entrainment in a flowing electrolyte, or by mechanical action. The finely divided zinc particles are collected and pressed into pellets by a mechanical device such as an extruder, a roller and chopper, or a punch and die. The pure zinc pellets are returned to the zinc battery in a pumped slurry and have uniform size, density and reactivity. Applications include zinc-air fuel batteries, zinc-ferricyanide storage batteries, and zinc-nickel-oxide secondary batteries. 6 figs.
Inventors:
Issue Date:
OSTI Identifier:
403653
Assignee:
Univ. of California, Oakland, CA (United States) PTO; SCA: 250903; 360101; PA: EDB-97:002279; SN: 96001695584
Patent Number(s):
US 5,578,183/A/
Application Number:
PAN: 8-439,388
Contract Number:
W-7405-ENG-48
Resource Relation:
Other Information: PBD: 26 Nov 1996
Research Org:
University of California
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; 36 MATERIALS SCIENCE; ZINC; ELECTRODEPOSITION; PELLETIZING; ZINC-AIR BATTERIES; ELECTRODES; NICKEL-ZINC BATTERIES; METAL-NONMETAL BATTERIES; FABRICATION