Tungstate and preparation method thereof

• Main Authors: QIN XINGLIU, ZHENG BINNING, SU CONGXUE
• Format: Patent
• Language: Chinese; English
• Published: 21.07.2017
• Subjects: ARTIFICIAL STONE; BASIC ELECTRIC ELEMENTS; CEMENTS; CERAMICS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; LIME, MAGNESIA; METALLURGY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; REFRACTORIES; SLAG; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF NATURAL STONE

The invention discloses tungstate Mg2.5VWO8 for an oxygen ion conductor and a preparation method thereof. The preparation method comprises the following steps: according to the stoichiometric ratio of the Mg2.5VWO8, weighing corresponding raw materials, ball-milling, presintering in high temperature and rapidly taking out, cooling, ball-milling, cold-isostatic-pressing, and sintering to obtain the Mg2.5VWO8. The preparation method is simple, and suitable for the large-scale production. The Mg2.5VWO8 synthesized by the method has the higher ionic conductivity, higher heat stability and chemical stability, and is a good oxygen ion conductor material. 本发明公开了种用于氧离子导体的钨酸盐MgVWO及其制备方法。所述制备方法为按MgVWO的化学计量比称取相应的原料，然后通过球磨，高温预烧并快速取出冷却，再球磨，最后冷等静压后烧结得到MgVWO。制备方法简单，适合大规模生产。该方法合成的MgVWO高温度下具有较高的离子导电性、具有较高的热稳定性及化学稳定性，是种优良的氧离子导体材料。