Porous electrode preparation method

Patent · Fri Dec 31 23:00:00 EST 1982

OSTI ID:864745

Arons, Richard M ^[1]; Dusek, Joseph T ^[2]

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1. Wheaton, IL
2. Downers Grove, IL

A porous sintered plaque is provided with a bimodal porosity that is especially well suited for use as an electrode within a molten carbonate fuel cell. The coarse porosity is sufficient for admitting gases into contact with the reaction surfaces while the fine porosity is wetted with and retains molten electrolyte on the reaction sites. The electrode structure is prepared by providing a very fine powder of such as nickel oxide and blending the powder with a suitable decomposable binder to form a solid mass. The mass is comminuted into agglomerate size particles substantially larger than the fine oxide particles and formed into a cohesive compact for subsequent sintering. Sintering is carried out at sufficient conditions to bind the agglomerates together into a porous structure having both coarse and fine porosity. Where lithiated nickel oxide cathodes are prepared, the sintering conditions can be moderate enough to retain substantial quantities of lithium within the electrode for adequate conductivity.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• Assignee: Arons, Richard M. (Wheaton, IL);Dusek, Joseph T. (Downers Grove, IL)
• Patent Number(s): US 4410607
• OSTI ID: 864745
• Country of Publication: United States
• Language: English

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/429/29/
adequate
admitting
agglomerate
agglomerates
bimodal
bind
binder
blending
carbonate
carbonate fuel
carried
cathodes
cell
coarse
cohesive
comminuted
compact
conditions
conductivity
contact
decomposable
electrode
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electrolyte
especially
fine
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form
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fuel
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gases
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lithiated
lithium
mass
method
moderate
molten
molten carbonate
molten electrolyte
nickel
nickel oxide
oxide
oxide cathode
oxide particle
oxide particles
particles
particles substantially
plaque
porosity
porous
porous electrode
porous sintered
porous structure
powder
preparation
preparation method
prepared
provided
providing
quantities
reaction
reaction site
reaction sites
retain
retains
sintered
sintered plaque
sintering
sites
size
size particle
size particles
solid
solid mass
structure
subsequent
substantial
substantially
substantially larger
sufficient
suitable
suited
surfaces
wetted