Zinc electrode and rechargeable zinc-air battery

Patent · Sun Jan 01 00:00:00 EST 1989

OSTI ID:867021

Ross, Jr., Philip N. ^[1]

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1. (Kensington, CA)

An improved zinc electrode is disclosed for a rechargeable zinc-air battery comprising an outer frame and a porous foam electrode support within the frame which is treated prior to the deposition of zinc thereon to inhibit the formation of zinc dendrites on the external surface thereof. The outer frame is provided with passageways for circulating an alkaline electrolyte through the treated zinc-coated porous foam. A novel rechargeable zinc-air battery system is also disclosed which utilizes the improved zinc electrode and further includes an alkaline electrolyte within said battery circulating through the passageways in the zinc electrode and an external electrolyte circulation means which has an electrolyte reservoir external to the battery case including filter means to filter solids out of the electrolyte as it circulates to the external reservoir and pump means for recirculating electrolyte from the external reservoir to the zinc electrode.

• Research Organization: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
• DOE Contract Number: AC03-76SF00098
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4842963
• OSTI ID: 867021
• Country of Publication: United States
• Language: English

Related Subjects

zinc
electrode
rechargeable
zinc-air
battery
improved
disclosed
comprising
outer
frame
porous
foam
support
treated
prior
deposition
thereon
inhibit
formation
dendrites
external
surface
provided
passageways
circulating
alkaline
electrolyte
zinc-coated
novel
utilizes
circulation
means
reservoir
including
filter
solids
circulates
pump
recirculating
porous foam
electrolyte reservoir
alkaline electrolyte
zinc electrode
external surface
filter means
pump means
rechargeable zinc-air
rechargeable zinc
outer frame
zinc-air battery
electrode support
battery comprising
circulating electrolyte
foam electrode
electrolyte circulation
improved zinc
treated prior
/429/29/