Solid electrolyte type fuel battery
View Patent ↗A solid electrolyte type fuel battery in which a material for an interconnector for connecting cells of the solid electrolyte type fuel battery comprises a matrix of the general formula MTiO 3 , where M is an alkaline earth metal element such as Mg, Ca, Sr or Ba. This fuel battery can be produced by burning at a lower temperature of 1,300 to 1,400° C. than before, shows output performance comparable to or better than that of conventional devices, and has better durability and thermo cycle resistance characteristics than the conventional devices.
1. A solid electrolyte fuel battery, in which a co-sintered interconnector for connecting cells of the solid electrolyte fuel battery comprises a material having a matrix of the general formula A 1-x B x C 1-y D y O 3 where A is Ca, Sr or Ba, B is a rare earth element, aluminum or chromium, C is titanium, D is tantalum, 0<x≦0.2 and 0<y≦0.2.
2. The solid electrolyte fuel battery as claimed in claim 1 , wherein the current passage of the interconnector is current collection in the vertical direction.
3. A solid electrolyte fuel battery, in which a co-sintered interconnector for connecting cells of the solid electrolyte fuel battery comprises a material having a matrix of the general formula A 1-x B x C 1-y D y O 3 where A is Mg, B is a rare earth element, aluminum or chromium, C is titanium, D is tantalum, 0<x≦0.2 and 0<y≦0.2.
4. The solid electrolyte fuel battery as claimed in claim 3 , wherein the current passage of the interconnector is current collection in the vertical direction.
5. A method of making a solid electrolyte fuel battery, in which a co-sintered interconnector for connecting cells of the solid electrolyte fuel battery comprises a material having a matrix of the general formula A 1-x B x C 1-y D y O 3 where A is Ca, Sr or Ba, B is a rare earth element, aluminum or chromium, C is titanium, D is tantalum, 0<x≦0.2 and 0<y≦0.2, said method comprising:
integrally burning within said battery the interconnector for connecting cells of the solid electrolyte fuel battery.
6. The method of making the solid electrolyte fuel battery as claimed in claim 5 , wherein said battery comprises a fuel electrode, an electrolyte, an interconnector and an air electrode laminated onto a substrate.
7. A method of making a solid electrolyte fuel battery, in which a co-sintered interconnector for connecting cells of the solid electrolyte fuel battery comprises a material having a matrix of the general formula A 1-x B x C 1-y D y O 3 where A is Mg, B is a rare earth element, aluminum or chromium, C is titanium, D is tantalum, 0<x≦0.2 and 0<y≦0.2, said method comprising:
integrally burning within said battery the interconnector for connecting cells of the solid electrolyte fuel battery.
8. The method of making the solid electrolyte fuel battery as claimed in claim 7 , wherein said battery comprises a fuel electrode, an electrolyte, an interconnector and an air electrode laminated onto a substrate.
9. The method of claim 5 , wherein the current passage of the interconnector is current collection in the vertical direction.
10. The method of claim 7 , wherein the current passage of the interconnector is current collection in the vertical direction.
11. The method of claim 5 , wherein the integrally burning is performed at a temperature of 1,300° C. to 1,400° C.
12. The method of claim 7 , wherein the integrally burning is performed at a temperature of 1,300° C. to 1,400° C.
13. The solid electrolyte fuel battery as claimed in claim 1 , wherein the interconnector is a hermetic interconnector having a relative density of greater or equal to 94%.
14. The solid electrolyte fuel battery as claimed in claim 3 , wherein the interconnector is a hermetic interconnector having a relative density of greater or equal to 94%.