Air electrode material for high temperature electrochemical cells

Patent · Tue Jan 01 00:00:00 EST 1985

OSTI ID:865727

Ruka, Roswell J ^[1]

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1. Churchill Boro, PA

Disclosed is a solid solution with a perovskite-like crystal structure having the general formula La.sub.1-x-w (M.sub.L).sub.x (Ce).sub.w (M.sub.S1).sub.1-y (M.sub.S2).sub.y O.sub.3 where M.sub.L is Ca, Sr, Ba, or mixtures thereof, M.sub.S1 is Mn, Cr, or mixtures thereof and M.sub.S2 is Ni, Fe, Co, Ti, Al, In, Sn, Mg, Y, Nb, Ta, or mixtures thereof, w is about 0.05 to about 0.25, x+w is about 0.1 to about 0.7, and y is 0 to about 0.5. In the formula, M.sub.L is preferably Ca, w is preferably 0.1 to 0.2, x+w is preferably 0.4 to 0.7, and y is preferably 0. The solid solution can be used in an electrochemical cell where it more closely matches the thermal expansion characteristics of the support tube and electrolyte of the cell.

• Research Organization: Westinghouse Electric Corp., Pittsburgh, PA (United States)
• DOE Contract Number: AC02-80ET17089
• Assignee: Westinghouse Electric Corp. (Pittsburgh, PA)
• Patent Number(s): US 4562124
• OSTI ID: 865727
• Country of Publication: United States
• Language: English

Related Subjects

air
electrode
material
temperature
electrochemical
cells
disclosed
solid
solution
perovskite-like
crystal
structure
formula
1-x-w
s1
1-y
s2
sr
mixtures
mn
mg
nb
05
25
preferably
cell
closely
matches
thermal
expansion
characteristics
support
tube
electrolyte
temperature electrochemical
closely matches
support tube
air electrode
electrochemical cells
thermal expansion
electrochemical cell
electrode material
crystal structure
solid solution
perovskite-like crystal
closely match
/429/252/501/