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Title of Journal: J SolGel Sci Technol

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Abbravation: Journal of Sol-Gel Science and Technology

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Springer US

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DOI

10.1016/0014-4886(86)90138-x

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1573-4846

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Synthesis of LiCoOSubscript2/Subscript by Emp

Authors: X L Zeng Y Y Huang F L Luo Y B He D G Tong
Publish Date: 2010/02/06
Volume: 54, Issue: 2, Pages: 139-146
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Abstract

The synthesis process of LiCoO2 prepared by lapple acid lHOOCCHOHCH2COOH assisted sol–gel method is studied by using Fourier transforms infrared spectroscopy mass spectroscopy simultaneous thermogravimetric and differential thermal analysis Xray diffraction analysis and elemental analysis The results show that lithium and cobalt ions are trapped homogeneously on an atomic scale throughout the precursor Lithium carbonate and Co3O4 are intermediate products during heat treatment of the precursor Moreover the kinetics for formation of LiCoO2 by lapple acid assisted sol–gel method is faster than the case of the conventional solidstate reaction between lithium carbonate and Co3O4 In comparison with the solidstate reaction the sol–gel method significantly shortens the required reaction time for synthesizing LiCoO2 and also reduces the particle size In the electrochemical test it is found that the specific discharge/charge capacities as well as the coulomb efficiency substantially increase with increasing the calcination temperature It is considered that LiCoO2 with a goodlayered structure facilitates the insertion and deinsertion of lithium ions in aqueous electrolyte As a result the combination of the sol–gel method with proper calcination processes is highly successful in producing LiCoO2 powders with large specific capacity and good cycle performance in aqueous lithiumion battery

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  9. Removal of Pb(II) ions from aqueous systems using thiol-functionalized cobalt-ferrite magnetic nanoparticles
  10. Simple synthesis of Co 3 O 4 nanoflakes using a low temperature sol–gel method suitable for photodegradation of dyes
  11. The effect of PO 2,5 and AlO 1,5 additions on structural changes and crystallization behavior of SiO 2 -TiO 2 sol-gel derived glasses and thin films
  12. Antiwetting silica–gelatin nanohybrid and transparent nano coatings synthesised through an aqueous sol–gel process
  13. Comparison of structure and phase change characteristic of microencapsulated core/shell Al–Si alloy microparticles synthesized by two methods
  14. Bioencapsulation of living yeast ( Pichia pastoris ) with silica after transformation with lysozyme gene
  15. Optical properties of yellow-light-emitting LiZnVO 4 :Eu 3+ phosphor prepared by sol–gel method
  16. CuAl 2 O 4 powder synthesis by sol-gel method and its photodegradation property under visible light irradiation
  17. GPS patch antenna performance by modification of Zn (1−x) Ca x Al 2 O 4 -based microwave dielectric ceramics
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  20. Investigation of Br–N Co-doped TiO 2 photocatalysts: preparation and photocatalytic activities under visible light
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