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Apparatus for measuring PCT curve of material by using solid state proton conductor, and method thereof

A proton conductor, solid-state technology, applied in the direction of electrochemical variables of materials, etc., can solve the problems of expensive equipment and easy contamination of materials to be measured, and achieve the effects of simple operation, fast measurement, and easy data acquisition and analysis.

Active Publication Date: 2014-05-28
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, mass method equipment is expensive, and the material to be measured is easily contaminated during the process of entering and exiting the balance

Method used

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  • Apparatus for measuring PCT curve of material by using solid state proton conductor, and method thereof
  • Apparatus for measuring PCT curve of material by using solid state proton conductor, and method thereof
  • Apparatus for measuring PCT curve of material by using solid state proton conductor, and method thereof

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Embodiment

[0033]This embodiment takes the measurement of the PCT curve of metal titanium as an example to further describe the measurement of the PCT curve of the hydrogen storage material, but is not limited to this embodiment.

[0034] The input impedance of the digital voltmeter adopted in the embodiment of the present invention ≥ 10 9 ohm.

[0035] The specific implementation method is as follows:

[0036] (1) Weigh 0.2169g of the metal titanium powder to be tested and seal it in the solid proton conductor CaZrO 3 In the container, the electrode leads are respectively connected to the inside and outside of the proton conductor container, and Ag paste is coated on the outer wall of the proton conductor to make a porous silver electrode, such as figure 1 As shown, put in a resistance furnace with a controlled atmosphere, and pass Ar-H with a certain hydrogen partial pressure into the resistance furnace 2 Mixed gas, the volume fraction of hydrogen is 6.4%, the resistance furnace is ...

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Abstract

The invention belongs to the technical field of physical and chemical test, and concretely relates to an apparatus for measuring the PCT curve of a material by using a solid state proton conductor, and a method thereof. The apparatus for measuring the PCT curve of a material by using a solid state proton conductor comprises a solid state proton conductor container, a DC source, a voltmeter, a transfer switch and an electric resistance furnace; when the material is measured, a DC voltage is applied to two electrodes of a proton conductor to measure the change curve of the current intensity of a circuit with the time, hydrogen in atmosphere electro-migrates to a material to be measured and capable of adsorbing hydrogen, and the hydrogen voltage can be calculated by measuring the electromotive force of a hydrogen concentration cell according to the principle of a conductor hydrogen concentration cell; and the content of hydrogen in the material can be calculated by measuring the change curve of the current according to a principle of charge conservation. The apparatus and the method enables the hydrogen pressure and the hydrogen content which are difficult to measure to be directly converted into electric signals, so it is easy to acquire and analyze data, thereby the apparatus and the method have the advantages of fast measurement, low cost and reliable data.

Description

technical field [0001] The invention belongs to the technical field of physical and chemical testing, and in particular relates to a device and method for measuring PCT curves of materials by using a solid proton conductor. Background technique [0002] The PCT curve, also known as the pressure-composition-temperature curve, characterizes the phase equilibrium relationship of the metal-hydrogen system. The PCT curve of hydrogen storage materials is an important characteristic curve to measure the thermodynamic performance of hydrogen storage materials. The hydrogen storage capacity of the metal hydride and the decomposition pressure value at any temperature can be known through the PCT curve. The plateau pressure, plateau width and slope, plateau initial concentration and hysteresis effect of the PCT curve are not only the main indicators for routinely measuring the hydrogen absorption and desorption performance of hydrogen storage alloys, but also the basis for exploring n...

Claims

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Application Information

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IPC IPC(8): G01N27/49
Inventor 厉英丁玉石邓文卓
Owner NORTHEASTERN UNIV
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