Dissertation > Excellent graduate degree dissertation topics show

Study on Electrochemical Sensor of Aluminum Solid Electrolyte (Al0.2Zr0.8)20/19Nb(PO43

Author: LiuJia
Tutor: WangLing
School: Hebei Union University
Course: Chemical processes
Keywords: Al3+ion conductor solid electrolyte sintering additives electricalconductivity chemical stability
CLC: TP212.2
Type: Master's thesis
Year: 2013
Downloads: 3
Quote: 0
Read: Download Dissertation

Abstract


The (Al0.2Zr0.8)20/19Nb(PO43solid electrolyte was synthesized by the coprecipitationmethod; Al2(WO43solid electrolyte was synthesized by the coprecipitation and the sol-gel method. Added with different amount of ZnO, the phase composition, microstructureand electrical conducting property of samples are characterized by XRD, SEM and EIS,respectively. Studied the stability of (Al0.2Zr0.8)20/19Nb(PO43and Al2(WO43in500℃galvanizing zinc. Prepared Al sensor with (Al0.2Zr0.8)20/19Nb(PO43and Al2(WO43as thesolid electrolyte. The results show that::The different ZnO doping ratio have a great effect on the phase composition andmicrostructure. At a certain sintering temperature,(Al0.2Zr0.8)20/19Nb(PO43was formed ofNASICON structure, and formed of Al2(WO43pure phase structure, there is no impurityphase generation. There was no ZnO phase appeared, which showed ZnO reacted with(Al0.2Zr0.8)20/19Nb(PO43and Al2(WO43. The grain size and the density of samplesincrease with increasing the ZnO amount.The stability tests determined that (Al0.2Zr0.8)20/19Nb(PO43and Al2(WO43werestability in the galvanizing zinc, the diffraction peak intensity, peak shape and peakposition hardly change. The SEM showed the section of the samples was density withoutholes.The ion transference number tests determined that (Al0.2Zr0.8)20/19Nb(PO43testedunder different voltage, the Al ion transference number were above0.99, which showedthat the main conduction ion is Al3+, electronic conduction can be ignored; Al2(WO43tested under different voltage, the Al ion transference number were above0.96, whichshowed that the main conduction ion is Al3+, electronic conduction can be ignored.The (Al0.2Zr0.8)20/19Nb(PO43with5%ZnO sintered at1300℃had the highestconductivity,1.24×10-3S·cm-1at700℃, Al2(WO43was synthesized by thecoprecipitation method with1%ZnO sintered at1000℃, the highest conductivity was4.27×10-4S·cm-1at800℃,Al2(WO43was synthesized by the sol-gel method with1%ZnO sintered at1000℃, the highest conductivity was2.55×10-4S·cm-1at800℃. TheAl sensor is prepared with (Al0.2Zr0.8)20/19Nb(PO43and Al2(WO43has the respond to theAl concentration in the hot zinc solution.

Related Dissertations

  1. Compatibility Study of Interface between Na~+ Conductive Ceramic and Na,TQ174.1
  2. Study on Electrolyte Additives of Li-ion Batteries and Solid Electrolytes,TM912
  3. The Study on Zircona NO2 Sensor,TP212.2
  4. Preparation and Electrochemical Property Study of TiO2 Nanotube and Its Acidified Products,TB383.1
  5. The oxide doped Ce_ ( 0.9 ) of RE_ ( 0.1 ) O_ ( 2 -δ ) ( RE = Sm , Gd) ceramic material structure and electrical properties of,TM911.4
  6. Synthesis and Properties of B Site Doped LnGaO3 -Based Solid Electrolytes (ln=la,pr,Nd),TM911.4
  7. Solid-state NMR Study on the Structures of PEO/LiClO4 Polymer Electrolyte System,O482
  8. Research on the Solid-electrolyte SO2 and CO2 Gas Sensors,TP212.1
  9. Study on Solid Electrolyte Interface Film(SEI film) And Relative Properties of Anode Materials for Lithium Ion Batteries,TM911.3
  10. The Study of Brown Ampoule Glass,TQ171.1
  11. The Research of Existing Characteristics and Chemical Stability of Typical Soil Organic Matter in Chongqing,S158
  12. Study of PLA/PMMA/SiO2 Degradable Hybrid Polymer Solid Electrolytes,O631.3
  13. Study on the Sulfur Sensor with Auxiliary Electrode,TP212.3
  14. Development of low-melting phosphate glass sealing,TQ171.1
  15. Preparation and Properties of lead-free glass powder,TQ171.6
  16. Preparation and Characterization of Solid Electrolyte and Other Materials Used in Intermediate Temperature Solid Oxide Fuel Cell,TM911.4
  17. Study on (MgO,Y2O3)-PSZ Oxygen Probe Material Used in Molten Steel,TH83
  18. The Discovery and Identification of a New Coliphage (EECP) Special for Genetically Engineered E. Coli,Q78
  19. Synthesis and Characteristics of BaCe0.9-xZrxM0.1O3-δ (M=Gd、Nd) Proton Conductors,TQ174.6
  20. Preparation and Properties of CeO_2 doped with transition metal oxide -based solid electrolyte,O614.332
  21. Studies on Synthesis and Properties of Solid Polymer Electrolytes,O631

CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation components,parts > Transmitter ( converter),the sensor > Chemical sensors
© 2012 www.DissertationTopic.Net  Mobile