Novel air electrode for metal-air battery with new carbon material and method of making same

Patent · Mon Jan 01 00:00:00 EST 1990

OSTI ID:867394

Ross, Jr., Philip N. ^[1]

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1. (Kensington, CA)

A novel carbonaceous electrode support material is disclosed characterized by a corrosion rate of 0.03 wt. %/hour or less when measured a5 550 millivolts vs. a Hg/HgO electrode in a 30 wt. % KOH electrolyte a5 30.degree. C. The electrode support material comprises a preselected carbon black material which has been heat-treated by heating the material to a temperature of from about 2500.degree. to about 3000.degree. C. over a period of from about 1 to about 5 hours in an inert atmosphere and then maintaining the preselected carbon black material at this temperature for a period of at least about 1 hour, and preferably about 2 hours, in the inert atmosphere. A carbonaceous electrode suitable for use as an air electrode in a metal-air cell may be made from the electrode support material by shaping and forming it into a catalyst support and then impregnating it with a catalytically active material capable of catalyzing the reaction with oxygen at the air electrode of metal-air cell.

• 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 4927718
• OSTI ID: 867394
• Country of Publication: United States
• Language: English

Related Subjects

novel
air
electrode
metal-air
battery
carbon
material
method
carbonaceous
support
disclosed
characterized
corrosion
rate
03
wt
hour
measured
a5
550
millivolts
vs
hg
hgo
30
koh
electrolyte
degree
comprises
preselected
black
heat-treated
heating
temperature
2500
3000
period
hours
inert
atmosphere
maintaining
preferably
suitable
cell
shaping
forming
catalyst
impregnating
catalytically
active
capable
catalyzing
reaction
oxygen
corrosion rate
catalyst support
air electrode
active material
inert atmosphere
material comprises
catalytically active
carbon black
support material
carbon material
material capable
carbonaceous electrode
electrode support
disclosed characterized
air cell
/429/423/502/