Calcium zirconate material doped with metal and preparation method and application of calcium zirconate material

A calcium zirconate, metal technology, applied in electrochemical variables of materials, chemical instruments and methods, fuel cells, etc., can solve the problems of high price, poor mechanical properties and stability, and high cost, and achieve low cost, physical properties and chemical properties. Stable performance and less pores
CN108529671AInactive Publication Date: 2018-09-14NORTHEASTERN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NORTHEASTERN UNIV
Publication Date
2018-09-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a calcium zirconate material doped with metal and a preparation method and application of the calcium zirconate material. The calcium zirconate material doped with metal comprises the following raw materials of: calcium carbonate powder, zirconia powder and chromium oxide powder, wherein the molar ratio of the total of the zirconia powder and chromium oxide powder to the calcium carbonate powder is 1:1, and the chromium oxide powder accounts for 0.05-0.15, by mole, of the total of the zirconia powder and chromium oxide powder. The calcium zirconate material doped withchromium has both oxygen ion conductivity and electron conductivity at the same time, and has low price, excellent mechanical properties and stability. The preparation method of the calcium zirconatematerial doped with chromium has a simple process and low cost, the prepared calcium zirconate material doped with chromium has few pores, and the compactness and mechanical properties are improved greatly; the calcium zirconate material doped with chromium can be applied to a dense diffusion barrier layer in an oxygen sensor, a cathode of a solid oxide fuel cell or an oxygen separation membrane.
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Description

technical field

[0001] The invention belongs to the technical field of calcium zirconate materials, and in particular relates to a metal-doped calcium zirconate material, a preparation method and an application thereof. Background technique

[0002] Electrochemical oxygen sensors are divided into two types: primary battery type and current limiting type. Since the potential of the galvanic oxygen sensor is a function of the logarithm of the concentration ratio, the galvanic oxygen sensor is less sensitive at high oxygen partial pressures. The limiting current of the limiting current oxygen sensor is a function of the concentration, so the measuring range is wider and the accuracy is higher. At present, the limiting current oxygen sensor is divided into three types: small hole type, porous type and dense diffusion barrier layer type. Among them, the small hole type and porous type have defects such as high cost, frequent pore deformation and solid particle clogging. In comp...

Claims

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