Fine-sized LiCoO2 cathode powders prepared from the nano-sized cobalt oxide powders obtained by gas phase reaction method

Seo Hee Ju, Yun Chan Kang

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Fine-sized LiCoO2 powders were prepared by solid-state reaction method using nano-sized Co3O4 powders. Nano-sized Co 3O4 powders with regular morphology and narrow size distribution were obtained by spray pyrolysis method. The fine-sized LiCoO 2 powders had slightly aggregated morphology and narrow size distribution even without milling process. The mean size of the LiCoO 2 powders increased from 280 nm to 500 nm when the post-treatment temperature was changed from 500°C to 800°C. On the other hand, the LiCoO2 powders prepared by conventional spray pyrolysis method at preparation conditions of high production rate had irregular morphology and broad size distribution. The initial discharge capacities of the fine-sized LiCoO2 powders prepared by solid-state reaction method and the commercial product with micron size were each 151 mAh/g and 133 mAh/g, The discharge capacities of the fine-sized LiCoO2 powders dropped from 151 to 135 mAh/g after 50 th cycle at a current density of 0.1 C.

Original languageEnglish
Pages (from-to)767-771
Number of pages5
JournalJournal of the Ceramic Society of Japan
Volume115
Issue number1347
DOIs
Publication statusPublished - 2007 Jan 1
Externally publishedYes

Fingerprint

cobalt oxides
Powders
Cobalt
Cathodes
Gases
cathodes
vapor phases
Oxides
Spray pyrolysis
Solid state reactions
pyrolysis
sprayers
solid state
cobalt oxide
Current density
current density
preparation
cycles
products

Keywords

  • Cathode materials
  • Lithium cobaltate
  • Nano powders
  • Spray pyrolysis

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

Cite this

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title = "Fine-sized LiCoO2 cathode powders prepared from the nano-sized cobalt oxide powders obtained by gas phase reaction method",
abstract = "Fine-sized LiCoO2 powders were prepared by solid-state reaction method using nano-sized Co3O4 powders. Nano-sized Co 3O4 powders with regular morphology and narrow size distribution were obtained by spray pyrolysis method. The fine-sized LiCoO 2 powders had slightly aggregated morphology and narrow size distribution even without milling process. The mean size of the LiCoO 2 powders increased from 280 nm to 500 nm when the post-treatment temperature was changed from 500°C to 800°C. On the other hand, the LiCoO2 powders prepared by conventional spray pyrolysis method at preparation conditions of high production rate had irregular morphology and broad size distribution. The initial discharge capacities of the fine-sized LiCoO2 powders prepared by solid-state reaction method and the commercial product with micron size were each 151 mAh/g and 133 mAh/g, The discharge capacities of the fine-sized LiCoO2 powders dropped from 151 to 135 mAh/g after 50 th cycle at a current density of 0.1 C.",
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author = "Ju, {Seo Hee} and Kang, {Yun Chan}",
year = "2007",
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T1 - Fine-sized LiCoO2 cathode powders prepared from the nano-sized cobalt oxide powders obtained by gas phase reaction method

AU - Ju, Seo Hee

AU - Kang, Yun Chan

PY - 2007/1/1

Y1 - 2007/1/1

N2 - Fine-sized LiCoO2 powders were prepared by solid-state reaction method using nano-sized Co3O4 powders. Nano-sized Co 3O4 powders with regular morphology and narrow size distribution were obtained by spray pyrolysis method. The fine-sized LiCoO 2 powders had slightly aggregated morphology and narrow size distribution even without milling process. The mean size of the LiCoO 2 powders increased from 280 nm to 500 nm when the post-treatment temperature was changed from 500°C to 800°C. On the other hand, the LiCoO2 powders prepared by conventional spray pyrolysis method at preparation conditions of high production rate had irregular morphology and broad size distribution. The initial discharge capacities of the fine-sized LiCoO2 powders prepared by solid-state reaction method and the commercial product with micron size were each 151 mAh/g and 133 mAh/g, The discharge capacities of the fine-sized LiCoO2 powders dropped from 151 to 135 mAh/g after 50 th cycle at a current density of 0.1 C.

AB - Fine-sized LiCoO2 powders were prepared by solid-state reaction method using nano-sized Co3O4 powders. Nano-sized Co 3O4 powders with regular morphology and narrow size distribution were obtained by spray pyrolysis method. The fine-sized LiCoO 2 powders had slightly aggregated morphology and narrow size distribution even without milling process. The mean size of the LiCoO 2 powders increased from 280 nm to 500 nm when the post-treatment temperature was changed from 500°C to 800°C. On the other hand, the LiCoO2 powders prepared by conventional spray pyrolysis method at preparation conditions of high production rate had irregular morphology and broad size distribution. The initial discharge capacities of the fine-sized LiCoO2 powders prepared by solid-state reaction method and the commercial product with micron size were each 151 mAh/g and 133 mAh/g, The discharge capacities of the fine-sized LiCoO2 powders dropped from 151 to 135 mAh/g after 50 th cycle at a current density of 0.1 C.

KW - Cathode materials

KW - Lithium cobaltate

KW - Nano powders

KW - Spray pyrolysis

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