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Method for enhancing compactness of BaMnO4 material

A technology of compactness and material structure, applied in chemical instruments and methods, fluid pressure measurement using optical methods, manganate/permanganate, etc., can solve the problems of dense structure of BaMnO4 materials that have not been seen, and achieve Simple operation, reduced unit cell volume, good repeatability

Inactive Publication Date: 2020-11-27
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the currently disclosed technology, there is no support for BaMnO 4 Research report on the compactness of material structure

Method used

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  • Method for enhancing compactness of BaMnO4 material
  • Method for enhancing compactness of BaMnO4 material
  • Method for enhancing compactness of BaMnO4 material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Level and center the diamond anvil device, select T301 steel sheet pre-pressed as the gasket, punch the gasket and insulate the gasket, use cubic BN as the insulating powder, and add the insulating powder to the gasket. Press, and then punch a hole in the pressed insulating powder to make a sample cavity, arrange two electrodes on the diamond anvil, and BaMnO 4 The powder was thoroughly ground for 2 minutes and the sample was added in a diamond-anvil-sealed sample chamber. The ruby ​​fluorescence peak is used as the calibration object of the pressure. The pressure is applied to the inside of the sample chamber of the diamond-anvil device, and the in-situ high-voltage impedance spectroscopy test is carried out.

[0018] Change the internal pressure of the sample cavity of the diamond anvil device in the range of 1.2-30.7GPa, and take 1.2, 2.2, 3.4, 4.1, 5.2GPa, 8.6GPa, 11.9GPa, 13.0, 13.9GPa, 16.5GPa, 19.6GPa in this pressure range GPa, 21.7, 23.0GPa, 25.2GPa, 27.4GPa,...

Embodiment 2

[0020] Firstly, the diamond counter-anvil device is adjusted, and the BaMnO 4 The sample is placed in the high-pressure device. The diamond anvil surface is 300um. T301 steel sheet is selected as the gasket material with a thickness of 250um. Silicon oil is used as the pressure transmission medium. The ruby ​​fluorescence peak is used as the calibration object of the pressure. on the synchrotron radiation source bench. The pressure is applied to the inside of the sample chamber of the diamond-anvil device, and the high-pressure synchrotron radiation diffraction experiment test is carried out.

[0021] Change the internal pressure of the sample cavity of the diamond-to-anvil device in the range of 2.1-31.0GPa, and take 2.1, 7.3, 11.2, 12.9, 13.8, 14.9, 16.4, 18.2, 19.5, 22.0, 24.4, 25.7, 27.7, 31.0GPa isopressure point test high pressure synchrotron radiation diffraction experiment, analysis of BaMnO 4 The experimental data of the various diffraction peaks and diffraction an...

Embodiment 3

[0023] The BaMnO in embodiment 1 4 On each resistance data of the 16 pressure points obtained above, the internal pressure of the sample cavity of the diamond-to-anvil device is used to calibrate BaMnO with Search match software. 4 The d value of each characteristic crystal plane index changes with the pressure. For the specific test results, see image 3 .

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Abstract

The invention discloses a method for enhancing the structural compactness of a BaMnO4 material, and belongs to the technical field of high-pressure regulation and control of material compactness. 1.2-31 GPa of pressure is applied to a BaMnO4 sample in a diamond anvil cell under the condition of room temperature to obtain the BaMnO4 material with enhanced compactness. According to the preparation method disclosed by the invention, the cell volume of BaMnO4 can be reduced to 304.85 angstroms to the maximum extent, so that the material compactness of the BaMnO4 is effectively improved. The methodprovided by the invention is simple to operate and good in repeatability, and provides a new direction for application of BaMnO4 in the technical fields of sewage treatment and novel positive electrode active materials.

Description

technical field [0001] The invention belongs to the technical field of high-pressure control material compactness, and in particular relates to a reinforced BaMnO 4 Methods for material compactness. Background technique [0002] High-pressure physics is a subject that studies the physical behavior of various substances under high pressure. High pressure generally refers to all pressures higher than normal pressure, which is an extreme special condition. Various materials will have special properties different from normal pressure under high pressure. High pressure is a commonly used means to adjust the properties of materials. Under high pressure, the structure of the material, the volume of the unit cell, and the mode of electrical transport will change accordingly. [0003] In recent years, more and more researches have focused on the development and utilization of new energy sources. Barium manganate was often used as an oxidizing agent in the past. Its excellent oxi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G45/12G01L11/02
CPCC01G45/1207C01P2006/40G01L11/02
Inventor 韩永昊刘瑜高春晓
Owner JILIN UNIV
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