Ribbed electrode substrates

Patent · Sat Jan 01 04:00:00 EST 1983

OSTI ID:864500

Breault, Richard D.; Goller, Glen J.

A ribbed substrate for an electrochemical cell electrode is made from a mixture of carbon fibers and carbonizable resin and has a mean pore size in the ribs which is 60-75% of the mean pore size of the web portions of the substrate which interconnect the ribs. Preferably the mean pore size of the web portion is 25-45 microns; and, if the substrate includes edge seals parallel to the ribs, the edge seals preferably have a mean pore size no greater than about ten microns. Most preferably the substrate has the same ratio of carbon fibers to polymeric carbon in all areas, including the ribs, webs, and edge seals. A substrate according to the present invention will have better overall performance than prior art substrates and minimizes the substrate thickness required for the substrate to perform all its functions well.

• Research Organization: United Technologies Corporation, Hartford, CT (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC03-77ET11302
• Assignee: United Technologies Corporation (Hartford, CT)
• Patent Number(s): 4,374,906
• Application Number: 06/306835
• OSTI ID: 864500
• Country of Publication: United States
• Language: English

Related Subjects

/429/
25-45
60-75
according
carbon
carbon fiber
carbon fibers
carbonizable
cell
cell electrode
edge
edge seal
edge seals
electrochemical
electrochemical cell
electrode
electrode substrate
electrode substrates
fibers
functions
including
interconnect
mean
mean pore
microns
minimizes
mixture
overall
parallel
perform
performance
polymeric
pore
pore size
portion
portions
preferably
prior
ratio
required
resin
ribbed
ribbed electrode
ribs
seals
size
substrate
substrate thickness
substrates
thickness
web
webs