Ionic conductivity testing method for ion-electron mixing conductor material

A technology of ionic conductivity and mixed conductors, applied in the direction of material resistance, measuring resistance/reactance/impedance, measuring devices, etc., can solve the problems of inaccurate measurement results, neglect of contact resistance, and influence of measurement results, etc., to avoid inconvenient operation, Reduce the effect of error and the experimental process is simple and easy

Inactive Publication Date: 2015-08-26
SHANGHAI UNIV
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Problems solved by technology

However, the blocking electrode and the sample to be tested are connected together to form an electrochemical cell by co-sintering or direct contact under pressure, which will inevitably cause contact resistance, and at the same time, a certain The degree of electrode polarization phenomenon, while the cur

Method used

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  • Ionic conductivity testing method for ion-electron mixing conductor material
  • Ionic conductivity testing method for ion-electron mixing conductor material
  • Ionic conductivity testing method for ion-electron mixing conductor material

Examples

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Example Embodiment

[0019] Example one:

[0020] In this embodiment, see Figure 1 ~ Figure 4 , A test method for ion conductivity of ion-electron mixed conductor material, characterized in that it comprises the following steps:

[0021] a. After sintering the powder of the ion-electron mixed conductor material into a cylindrical or cubic long mixed conductor material sample 2, measure the size of the mixed conductor material sample 2 and calculate the mixed conductor material sample 2 Cross-sectional area S;

[0022] b. The yttria-stabilized zirconia matrix material with a percentage of the amount of the substance is 8mol% to prepare the elongated blocking electrode 1, the cross-section of the blocking electrode 1 and the mixed conductor material sample prepared in a 2 has the same cross-sectional shape and the same cross-sectional area, so that the end surface of the blocking electrode 1 completely covers the end surface contacting the mixed conductor material sample 2;

[0023] c. The end surface of...

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Abstract

The invention discloses an ionic conductivity testing method for an ion-electron mixing conductor material. Based on the resistance variation caused by the measurement dimension range change of the ionic conductivity by measuring to-be-measured mixing conductor material after electron blocking, the ionic conductivity is obtained by calculating. In the testing process, the method is capable of avoiding the processing procedures caused by cutting materials, and preventing the loss of the materials in the processing process. The measurement error caused by the change of the material size can be avoided too. The testing method is simple and convenient, and the error is reduced in the greatest degree.

Description

technical field [0001] The invention relates to a method for testing the conductivity of a material, in particular to a method for measuring the conductivity of an ion-electronic mixed conductor material, which is applied to the technical field of functional conductive materials. Background technique [0002] A mixed conductor refers to a ceramic material that is capable of conducting both oxygen ions and electrons. At present, mixed conductors mainly include two-phase mixed conductors and single-phase mixed conductors. Two-phase mixed conductor is based on pure ionic conductor, by adding noble metal or electronically conductive oxide, it forms a continuous second phase in the material, and electrons and oxygen ions pass through different phases respectively; single-phase mixed conductor mainly It is a compound of perovskite and its derivative structure. Among them, the perovskite structure mixed conductor is made by doping low-valent metal element ions and transition meta...

Claims

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Application Information

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IPC IPC(8): G01N27/04G01R27/02
Inventor 甄强谭威李榕
Owner SHANGHAI UNIV
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