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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.
Inventors:
 [1]
  1. (Oakland, CA)
Issue Date:
OSTI Identifier:
870696
Assignee:
Regents of University of California (Oakland, CA) LLNL
Patent Number(s):
US 5578183
Contract Number:
W-7405-ENG-48
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Country of Publication:
United States
Language:
English
Subject:
production; zinc; pellets; uniform; formed; batteries; stationary; moving; slurry; particle; electrode; process; involves; cathodic; deposition; finely; divided; morphology; battery; reaction; product; non-adhering; substrate; mossy; removed; action; gravity; entrainment; flowing; electrolyte; mechanical; particles; collected; pressed; device; extruder; roller; chopper; punch; die; pure; returned; pumped; size; density; reactivity; applications; zinc-air; fuel; zinc-ferricyanide; storage; zinc-nickel-oxide; secondary; secondary batteries; electrode substrate; storage batteries; air fuel; process involves; reaction product; finely divided; uniform size; mechanical device; zinc pellets; particle electrode; zinc particle; -air fuel; oxide secondary; /205/

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