METHOD FOR MANUFACTURING SOLID ELECTROLYTIC MEMBER

• Main Authors: HIRAIWA CHIHIRO, TAKEUCHI HISAO, UDA TETSUYA, AWAZU TOMOYUKI, MASHIMA MASATOSHI, TAWARAYAMA HIROMASA, HIGASHINO TAKAHIRO, NODA YOHEI, HAN DONGLIN, KANDA RYOKO
• Format: Patent
• Language: English; Japanese
• Published: 06.09.2018
• Subjects: BASIC ELECTRIC ELEMENTS; CABLES; CONDUCTORS; ELECTRICITY; INSULATORS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES

PROBLEM TO BE SOLVED: To provide a method for manufacturing a solid electrolytic member, by which the shrinkage ratio in sintering can be increased substantially without causing deformation of a large-size solid electrolytic member.SOLUTION: A method for manufacturing a solid electrolytic member comprises: a molding step of molding an anode layer material to form an anode layer material mold 12; and a sintering step of sintering the anode layer material mold. In the sintering step, the anode layer material mold is put on a magnesium oxide bottom board 11, and heated at a temperature of 1300 to 1700°C. The anode layer material includes: any of NiO, CuO and FeOor a mixture or solid solution thereof; and a metal oxide having a perovskite type crystal structure. The metal oxide is a metal oxide represented by the following formula [1] or a mixture or solid solution thereof: ABMO[1] (where A is one or more kinds of Ba, Ca and Sr; B is one or more kinds of Ce and Zr; M is one or more kinds of Y, Yb, Er, and the like; 0.85≤a≤1; 0.50≤b<1; C=1-b; δ represents an amount of oxygen deficiency).SELECTED DRAWING: Figure 1 【課題】大型の固体電解質部材を殆ど変形させずに、焼結時の収縮率を大きくする固体電解質部材の製造方法の提供。【解決手段】アノード層材料を成形してアノード層材料成形体１２を作製する成形工程と、アノード層材料成形体を焼結する焼結工程と、を有する固体電解質部材の製造方法で、焼結工程は、酸化マグネシウム製の敷板１１にアノード層材料成形体を載置し、１３００℃以上、１７００℃以下に加熱して行い、アノード層材料は、ＮｉＯ、ＣｕＯ、Ｆｅ２Ｏ３又はこれらの混合物或いは固溶体と、ペロブスカイト型結晶構造を有する金属酸化物と、を含み、金属酸化物は、式［１］で表される金属酸化物又は混合物或いは固溶体である、固体電解質部材の製造方法。ＡａＢｂＭｃＯ３−δ式［１］（ＡはＢａ、Ｃａ又はＳｒの一種以上；ＢはＣｅ又はＺｒの種以上；ＭはＹ、Ｙｂ、Ｅｒ等の一種以上；０．８５≦ａ≦１；０．５０≦ｂ＜１；Ｃ＝１−ｂ；δは酸素欠損量）【選択図】図１