A kind of characterization method of lanthanum silicate nanopowder

A technology of nano-powder and lanthanum silicate, which is applied in the fields of permeability/surface area analysis, instrumentation, and electrochemical variables of materials, etc. It can solve the problem of unclear characterization of lanthanum acid nano-powder and lanthanum silicate nano-powder, etc. problem, achieve the effect of lower operating temperature, high electrical conductivity, and increase of oxygen empty orbital

Active Publication Date: 2021-06-25
YANTAI ENG & TECH COLLEGE YANTAI TECHNICIAN INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the unclear characterization of lanthanum silicate nano-powder, and propose a characteri...

Method used

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  • A kind of characterization method of lanthanum silicate nanopowder
  • A kind of characterization method of lanthanum silicate nanopowder
  • A kind of characterization method of lanthanum silicate nanopowder

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Experimental program
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Effect test

Embodiment 1

[0038] A characterization method of lanthanum silicate nanopowder, comprising the following steps;

[0039] S1, put La 10-x / 3 Ce x / 3 Si 6 o 26+§ After the powder is mixed with the molding agent, it is ground and granulated, and then put into a powder tablet press. After the tablet is formed, it is put into a muffle furnace for high-temperature calcination to obtain a test sample;

[0040] S2. Take part of the test sample for XRD test, and then perform Fourier infrared spectrum analysis on the test sample, using different structures to absorb different infrared wavelengths, so that different structures have a special absorption peak, qualitative Quantitatively analyze the structure of the test sample;

[0041] S3. Take part of the test sample, and use a scanning electron microscope to observe the size, shape and surface smoothness of the material;

[0042] S4. Take part of the test sample and put it in an electric blast dryer, dry it at 100-120°C for 1-1.5h, weigh it in th...

Embodiment 2

[0057] Embodiment 2: Based on Embodiment 1 but different;

[0058] according to figure 1 , 2 and 3, it can be analyzed that with the different doping amounts, the peak shape is different, because the above-mentioned LSO preparation process, the size of the pH affects the formation of a single phase. But when x=3, the diffraction peak is consistent with the standard LSO peak, and the crystal form is consistent. At the same time, the diffraction peak is sharper and the crystal form is better, so it becomes a spare material for composite electrolyte materials; and the main absorption peak of the detected infrared spectrum is mainly in 650cm -1 、800cm -1 、950cm -1 、1650cm -1 、3400cm -1 、3750cm -1 the peak position. SiO 4 4- The corresponding absorption band is at 860-1175cm -1 Between, 650cm -1 It is the characteristic peak of Ce-O and La-O, 1650cm -1 is COO -1 The stretching vibration peak of , 3400cm -1 、3750cm -1 The peak position of can be defined as the chara...

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Abstract

The invention discloses a characterization method of lanthanum silicate nano powder, which belongs to the field of lanthanum silicate characterization. By analyzing the preparation of LCSO powder, Ce +3 Doping of lanthanum silicate on La 10 Si 6 o 27 The influence of the structure of the ceramic sheet, and the different content of Ce +3 The impact of doping; preparation of LCSO ceramic sheets with higher conductivity properties, for subsequent use with perovskite electrolytes LSCM solid oxide electrolytes and CeO 2 The base electrolyte material SDC is compounded separately to provide a better LCSO ceramic sheet. By doping Ce, the La 10 Si 6 o 7 The material structure of LCSO electrolyte ceramics is improved, the oxygen orbital is increased, the operating temperature of SOFC is reduced, and the conductivity is maintained at a high level. XRD and SEM are used to analyze the phase structure of LCSO electrolyte ceramics, and through porosity, thermogravimetric analysis and AC impedance test, Obtain performance indices of electrolytic ceramics to obtain a complete and comprehensive analysis of electrolytic ceramics.

Description

technical field [0001] The invention relates to the field of characterization of lanthanum silicate, in particular to a characterization method of lanthanum silicate nanopowder. Background technique [0002] With the development of economy and technology, the exploration of energy has increasingly become a hot topic. The overuse of oil and coal has brought environmental pollution and toxic emissions. The research of solid oxide fuel cell (SOFC) has become one of the main tasks of contemporary scientific and technological research, and SOFC has become a clean energy in the 21st century. SOFC combustion is a device that converts chemical energy of dyes into electrical energy. However, SOFC can only have a conductivity of 0.1S / m when the operating temperature reaches about 1000°C. High temperature operation will cause electrode sintering and degradation, which will damage the performance of the battery and a series of problems, reduce the operating temperature of the battery, ...

Claims

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Application Information

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IPC IPC(8): G01N23/207G01B15/00G01B15/04G01B15/08G01N5/02G01N15/08G01N21/3563G01N27/26
CPCG01B15/00G01B15/04G01B15/08G01N5/02G01N15/0893G01N21/3563G01N23/207G01N27/26G01N2021/3572G01N2021/3595
Inventor 洪卉李媛张婷婷陈健于斐斐
Owner YANTAI ENG & TECH COLLEGE YANTAI TECHNICIAN INST
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