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

Patent · 01 January 1990

OSTI ID:867394

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
• 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

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