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Title: Continuous-feed electrochemical cell with nonpacking particulate electrode

An electrochemical cell providing full consumption of electrochemically active particles in a nonpacking, electrolyte-permeable bed has a tapered cell cavity bounded by two nonparallel surfaces separated by a distance that promotes bridging of particles across the cavity. The gap/particle size ratio is maintained as the particles are consumed, decrease in size, and travel from the point of entry to the narrower end of the cell. A cell of this configuration supports a bed of low packing density maintained in a dynamic steady state by alternate formation and collapse of particle bridges across the gap and associated voids over the entire active area of the cell. The cell design can be applied to refuelable zinc/air cells and zinc/ferrocyanide storage batteries.
Inventors:
 [1]
  1. (Oakland, CA)
Issue Date:
OSTI Identifier:
869984
Assignee:
Regents of University of California (Oakland, CA) LLNL
Patent Number(s):
US 5434020
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:
continuous-feed; electrochemical; cell; nonpacking; particulate; electrode; providing; consumption; electrochemically; active; particles; electrolyte-permeable; bed; tapered; cavity; bounded; nonparallel; surfaces; separated; distance; promotes; bridging; gap; particle; size; ratio; maintained; consumed; decrease; travel; entry; narrower; configuration; supports; packing; density; dynamic; steady; alternate; formation; collapse; bridges; associated; voids; entire; design; applied; refuelable; zinc; air; cells; ferrocyanide; storage; batteries; packing density; storage batteries; cell cavity; electrochemical cell; particle size; electrochemically active; cell design; surfaces separated; chemically active; cell providing; air cell; cavity bounded; particulate electrode; active particles; parallel surface; /429/