Effect of preparation temperature on the morphology, crystal structure and electrochemical properties of LiV3O8 powders prepared by spray pyrolysis

S. H. Ju, Yun Chan Kang

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The morphologies, crystal structures and electrochemical properties of the LiV3O8 powders prepared by spray pyrolysis at various preparation temperatures are investigated. The pure crystal structures of layered LiV3O8 phase are obtained after post-treatment at 400 °C irrespective of the preparation temperatures of the as-prepared powders. However, the morphologies of the post-treated LiV3O 8 powders are affected by the preparation temperatures of the as-prepared powders. The powders prepared at 600, 900 and 1000 °C have spherical shapes before and after post-treatment. The mean size of the LiV 3O8 powders obtained from the as-prepared powders obtained at 900 °C is 0.63 μm. The discharge capacities of the LiV 3O8 powders obtained from the as-prepared powders obtained at 900 °C decreased from 300 to 289 mAh g-1 by the 30th cycles at a current density of 0.1 C.

Original languageEnglish
Pages (from-to)133-137
Number of pages5
JournalMaterials Chemistry and Physics
Volume126
Issue number1-2
DOIs
Publication statusPublished - 2011 Mar 15
Externally publishedYes

Fingerprint

Spray pyrolysis
Electrochemical properties
Powders
pyrolysis
sprayers
Crystal structure
preparation
crystal structure
Temperature
temperature
Current density
current density
cycles

Keywords

  • A. Amorphous materials
  • A. Ceramics
  • B. Chemical synthesis
  • D. Electrochemical properties

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

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title = "Effect of preparation temperature on the morphology, crystal structure and electrochemical properties of LiV3O8 powders prepared by spray pyrolysis",
abstract = "The morphologies, crystal structures and electrochemical properties of the LiV3O8 powders prepared by spray pyrolysis at various preparation temperatures are investigated. The pure crystal structures of layered LiV3O8 phase are obtained after post-treatment at 400 °C irrespective of the preparation temperatures of the as-prepared powders. However, the morphologies of the post-treated LiV3O 8 powders are affected by the preparation temperatures of the as-prepared powders. The powders prepared at 600, 900 and 1000 °C have spherical shapes before and after post-treatment. The mean size of the LiV 3O8 powders obtained from the as-prepared powders obtained at 900 °C is 0.63 μm. The discharge capacities of the LiV 3O8 powders obtained from the as-prepared powders obtained at 900 °C decreased from 300 to 289 mAh g-1 by the 30th cycles at a current density of 0.1 C.",
keywords = "A. Amorphous materials, A. Ceramics, B. Chemical synthesis, D. Electrochemical properties",
author = "Ju, {S. H.} and Kang, {Yun Chan}",
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TY - JOUR

T1 - Effect of preparation temperature on the morphology, crystal structure and electrochemical properties of LiV3O8 powders prepared by spray pyrolysis

AU - Ju, S. H.

AU - Kang, Yun Chan

PY - 2011/3/15

Y1 - 2011/3/15

N2 - The morphologies, crystal structures and electrochemical properties of the LiV3O8 powders prepared by spray pyrolysis at various preparation temperatures are investigated. The pure crystal structures of layered LiV3O8 phase are obtained after post-treatment at 400 °C irrespective of the preparation temperatures of the as-prepared powders. However, the morphologies of the post-treated LiV3O 8 powders are affected by the preparation temperatures of the as-prepared powders. The powders prepared at 600, 900 and 1000 °C have spherical shapes before and after post-treatment. The mean size of the LiV 3O8 powders obtained from the as-prepared powders obtained at 900 °C is 0.63 μm. The discharge capacities of the LiV 3O8 powders obtained from the as-prepared powders obtained at 900 °C decreased from 300 to 289 mAh g-1 by the 30th cycles at a current density of 0.1 C.

AB - The morphologies, crystal structures and electrochemical properties of the LiV3O8 powders prepared by spray pyrolysis at various preparation temperatures are investigated. The pure crystal structures of layered LiV3O8 phase are obtained after post-treatment at 400 °C irrespective of the preparation temperatures of the as-prepared powders. However, the morphologies of the post-treated LiV3O 8 powders are affected by the preparation temperatures of the as-prepared powders. The powders prepared at 600, 900 and 1000 °C have spherical shapes before and after post-treatment. The mean size of the LiV 3O8 powders obtained from the as-prepared powders obtained at 900 °C is 0.63 μm. The discharge capacities of the LiV 3O8 powders obtained from the as-prepared powders obtained at 900 °C decreased from 300 to 289 mAh g-1 by the 30th cycles at a current density of 0.1 C.

KW - A. Amorphous materials

KW - A. Ceramics

KW - B. Chemical synthesis

KW - D. Electrochemical properties

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