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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. 6 figs.
Inventors:
Issue Date:
OSTI Identifier:
87745
Assignee:
Univ. of California, Oakland, CA (United States) PTO; SCA: 250901; PA: EDB-95:117111; SN: 95001431594
Patent Number(s):
US 5,434,020/A/
Application Number:
PAN: 8-152,964
Contract Number:
W-7405-ENG-48
Resource Relation:
Other Information: PBD: 18 Jul 1995
Research Org:
University of California
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; METAL-NONMETAL BATTERIES; DESIGN; ZINC-AIR BATTERIES; GRANULAR MATERIALS; PERMEABILITY; PARTICULATES; OPERATION; FERROCYANIDES

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