Dissertation > Excellent graduate degree dissertation topics show

Study on AB3-Type Hydrogen Storage Composite Alloys

Author: LiuShuXia
Tutor: ZhaoZuo
School: Changchun University of Science and Technology
Course: Inorganic Chemistry
Keywords: Of AB3 type of hydrogen storage alloys Physical diffusion method Heat treatment method Electrochemical properties
CLC: TG139.7
Type: Master's thesis
Year: 2011
Downloads: 26
Quote: 0
Read: Download Dissertation

Abstract


RE-Mg-Ni the AB3 type hydrogen storage alloy i.e. magnesium based hydrogen storage alloy , its synthesis process , both containing a large number of the CaCu5 structure of the AB5 type alloy component , also containing PuNi3 constructed AB3 type alloy component , both in the synthesis process constitutes a complex phase structure ; the structure corrosion potential difference, and magnesium in the dominant electrolyte instability , easily lead to the capacity of the multiplexed phase hydrogen storage alloy attenuation speed , self-discharge rate . The heat treatment process on the composite structure and its preparation have a significant impact , especially in terms of the number of the the CaCu5 and PuNi3 structure and its phase transition temperature relationship . In this study, by infiltration lithium super entropy method to address the problem , study the preparation and performance of complex phase AB3 -type hydrogen storage alloy . The selected to La0.7Mg0.3Ni2.8Co0.5 system , through physical diffusion method , magnesium - lithium intermediate alloys and their composites its processing and to study its electrochemical properties . The results show that the magnesium - Add lithium intermediate alloy significantly improved the cycle stability and the maximum discharge capacity of the hydrogen absorbing alloy , but decrease in the discharge capacity of magnification ; with molten salt seepage lithium technology based on this system containing lithium ultra entropy synthesis and electrochemical properties of the alloy . In addition, the study the AB4.7 type hydrogen storage alloys under different temperatures , different heat treatment composition and electrochemical properties . The results show that , increase the discharge capacity of the lithium content is gradually increased , at the same time can improve the the alloy charge retention rate to improve the performance of high and low temperature discharge ; maximum discharge capacity of the alloy after annealing , charge retention rate discharge performance , and electrochemical properties overall showed a downward trend.

Related Dissertations

  1. LSGM electrolyte thin films and electrochemical properties of,TM911.4
  2. Synthesis and Modification of Cathode Materials LiFePO4 and Li2FeSiO4 for Lithium Ion Battery,TM912
  3. Photocatalytic Reduction of Nitrate on Metal Modified TiO2,X703
  4. New Rechargeable Magnesium Battery Cathode Material silicate Cobalt Magnesium Preparation and Properties,TM912
  5. Synthesis and Modification of LiFePO4 Cathodic Materials for Lithium Ion Batteries,TM912
  6. An Investigation on the Structural and Electrochemical Properties of La15-x Ndx Fe14 Ni64 Mn5 B2 （x=0-6） Hydrogen Storage Alloys,TG139.7
  7. Battery cathode material spherical Ni (OH) _2 preparation conditions and properties of,TM911
  8. Preparation and Properties of Ti-based composite anode materials,TM910.4
  9. The Fabrication, Structure and Properties of SnO2/Sn/C Composites Anode Materials for Lithium Ion Batteries,TM912
  10. Study on Titanium-based Metal Oxide Anode with Tantalum Interlayer Coating,TG174.41
  11. Polyaniline / carbon composite material and energy storage applications,TB332
  12. Preparation of Polyaniline Anode Materials and Their Applications in Benthonic Sediment Microbial Fuel Cell,TM911.45
  13. Structure and Properties Analysis of Lithium Titanate Synthesized by Hydrothermal Method as Anode Materials for Lithium-ion Batteries,TM912
  14. Preparation and Properties of zinc electrowinning using polyaniline / boron carbide anode material,TB33
  15. The Property Research of Spinel Limn2O4 Cathode Materials,TM912
  16. Modification of Pani and Its Application for Supercapacitor,TM53
  17. Effect of Different Conductive Agents Used on the Performance of Supercapacitors,TM53
  18. Preparation and Electrochemical Performance of Activated Carbon Made from Peanut Shell,TM53
  19. The Effect of Alloying on Microstructure and Electrochemical Property of La-Mg-Ni Based A2B7-type Hydrogen Storage Alloys,TG139.7
  20. AB_3 type alloy Preparation and Properties of Hydrogen Storage,TG139.7

CLC: > Industrial Technology > Metallurgy and Metal Craft > Metallurgy and Heat Treatment > The alloy learn with a variety of properties of alloys > Other special nature of the alloy > Hydrogen storage alloy
© 2012 www.DissertationTopic.Net  Mobile