Production Method For Anode-Supported Cell
A production method includes: heating a first stacked body at 1000° C. or more, the first stacked body having: a layer containing an oxide represented by the composition formula: La 2 Si 2 O 7 ; a first layer provided on one side of the oxide-containing layer and containing cerium oxide doped with a lanthanum element; and a layer provided on the first layer opposite to the oxide-containing layer and containing nickel oxide, and thereby generating, from the oxide represented by the composition formula, a solid electrolyte that has an apatite structure and is c-axis oriented; placing a second layer containing cerium oxide doped or not doped with an Ln element (a rare earth element other than cerium), on the solid electrolyte-containing layer opposite to the cerium oxide-containing layer, and thereby obtaining a second stacked body; and heating the second stacked body at 1000° C. or more.
1 . A production method for producing an anode-supported cell, the method comprising:
heating a first stacked body, in which a layer, a first layer and a nickel oxide-containing layer are stacked, at 1000° C. or more,
wherein the layer contains an oxide represented by a composition formula: La 2 Si 2 O 7 ,
the first layer is provided on a first side of the layer and contains cerium oxide doped with a lanthanum element, and
the nickel oxide-containing layer is provided on a first side of the first layer opposite to a second side of the first layer that faces the layer and contains nickel oxide,
and thereby generating, from the oxide represented by the composition formula, a solid electrolyte that has an apatite structure and is c-axis oriented;
placing a second layer that contains cerium oxide that is doped or not doped with an Ln element, where Ln represents a rare earth element other than cerium, on a second side of the layer, which contains the solid electrolyte, opposite to the first side of the layer that faces the first layer, and thereby obtaining a second stacked body; and
heating the second stacked body at 1000° C. or more,
wherein the nickel oxide-containing layer has a thickness of 300 μm or more and 3000 μm or less.
2 . A production method for producing an anode-supported cell, the method comprising:
heating a first stacked body, in which a layer, a first layer, a nickel oxide-containing layer and an auxiliary support layer are stacked, at 1000° C. or more,
wherein the layer contains an oxide represented by a composition formula: La 2 Si 2 O 7 ,
the first layer is provided on a first side of the layer and contains cerium oxide doped with a lanthanum element,
the nickel oxide-containing layer is provided on a first side of the first layer opposite to a second side of the first layer that faces the layer and contains nickel oxide, and
the auxiliary support layer is provided on a first side of the nickel oxide-containing layer opposite to a second side of the nickel oxide-containing layer that faces the first layer,
and thereby generating, from the oxide represented by the composition formula, a solid electrolyte that has an apatite structure and is c-axis oriented;
placing a second layer that contains cerium oxide that is doped or not doped with an Ln element, where Ln represents a rare earth element other than cerium, on a second side of the layer, which contains solid electrolyte, opposite to the first side of the layer that faces the first layer, and thereby obtaining a second stacked body; and
heating the second stacked body at 1000° C. or more.
3 . The production method according to claim 1 ,
wherein the Ln element comprises at least one selected from the group consisting of La, Nd, and Sm.
4 . The production method according to claim 1 ,
wherein the solid electrolyte comprising a composite oxide of lanthanum and silicon is generated.
5 . The production method according to claim 1 ,
wherein the solid electrolyte represented by a formula described below is generated:
A 9.33+x [T 6.00 ]O 26.00+z ,
wherein A represents one or more elements selected from the group consisting of La, Ce, Nd, and Sm,
T represents Si,
x represents a number of −1.33 or more and 3.00 or less,
z represents a number of −5.00 or more and 5.20 or less, and
a ratio (A/T) of the number of moles of A relative to the number of moles of T is 1.33 or more and 3.61 or less.
6 . The production method according to claim 1 , further comprising:
after heating the second stacked body to obtain a sintered second stacked body having a sintered second layer, placing a layer made of a material for an air electrode on a second side of the sintered second layer opposite to a first side of the sintered second layer that faces the layer, and thereby obtaining a third stacked body; and
heating the third stacked body.
7 . The production method according to claim 2 , further comprising:
after heating the second stacked body to obtain a sintered second stacked body having a sintered second layer, placing a layer made of a material for an air electrode on a second side of the sintered second layer opposite to a first side of the sintered second layer that faces the layer, and thereby obtaining a third stacked body; and
heating the third stacked body.
8 . The production method according to claim 2 ,
wherein the Ln element comprises at least one selected from the group consisting of La, Nd, and Sm.
9 . The production method according to claim 2 ,
wherein the solid electrolyte comprising a composite oxide of lanthanum and silicon is generated.
10 . The production method according to claim 2 ,
wherein the solid electrolyte represented by a formula described below is generated:
A 9.33+x [T 6.00 ]O 26.00+z ,
wherein A represents one or more elements selected from the group consisting of La, Ce, Nd, and Sm,
T represents Si,
x represents a number of −1.33 or more and 3.00 or less,
z represents a number of −5.00 or more and 5.20 or less, and
a ratio (A/T) of the number of moles of A relative to the number of moles of T is 1.33 or more and 3.61 or less.