Fuel cell stack with internal manifolds for reactant gases
Patent
·
OSTI ID:865408
A fuel cell stack includes a plurality of plate-like fuel cells arranged along an axis generally parallel to cell thickness with electrically conductive separator plates between each pair of cells. A plurality of axial manifolds are provided at opposite sides of the stack in outer marginal portions beyond the edges of electrodes and electrolyte tiles. Sealing rings prevent cross-leakage of oxidant fuel gases through use of pairs of outwardly extending lips from opposite tile surfaces bonded to first and second electrode frames respectively. The frames provide transition between electrode edges and manifold perimeters. The pairs of extension lips are sealingly bonded together through an electrically insulative sealing ring with wedge shaped fastening members.
- Research Organization:
- General Electric Co., Schenectady, NY (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-80ET17019
- Assignee:
- Unites States of America as represented by Department of Energy (Washington, DC)
- Patent Number(s):
- 4,510,213
- Application Number:
- 06/541,185
- OSTI ID:
- 865408
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
/429/
arranged
axial
axis
bonded
cell
cell stack
cell thickness
cells
cells arranged
conductive
conductive separator
cross-leakage
edges
electrically
electrically conductive
electrically insulative
electrode
electrodes
electrolyte
extending
extension
fastening
frames
fuel
fuel cell
fuel cells
fuel gas
fuel gases
gases
insulative
internal
lips
manifold
manifolds
marginal
opposite
outer
outwardly
outwardly extend
outwardly extending
oxidant
pair
pairs
parallel
perimeters
plate-like
plates
plurality
portions
prevent
provide
provided
reactant
reactant gas
reactant gases
respectively
rings
sealing
sealing rings
sealingly
separator
separator plate
separator plates
shaped
stack
surfaces
thickness
tile
tiles
transition
wedge
wedge shaped
arranged
axial
axis
bonded
cell
cell stack
cell thickness
cells
cells arranged
conductive
conductive separator
cross-leakage
edges
electrically
electrically conductive
electrically insulative
electrode
electrodes
electrolyte
extending
extension
fastening
frames
fuel
fuel cell
fuel cells
fuel gas
fuel gases
gases
insulative
internal
lips
manifold
manifolds
marginal
opposite
outer
outwardly
outwardly extend
outwardly extending
oxidant
pair
pairs
parallel
perimeters
plate-like
plates
plurality
portions
prevent
provide
provided
reactant
reactant gas
reactant gases
respectively
rings
sealing
sealing rings
sealingly
separator
separator plate
separator plates
shaped
stack
surfaces
thickness
tile
tiles
transition
wedge
wedge shaped