High rate capabilities induced by multi-phasic nanodomains in iron-substituted calcium cobaltite electrodes

Young Dae Ko, Jin Gu Kang, Kyung Jin Choi, Jae Gwan Park, Jae Pyoung Ahn, Kyung Yoon Chung, Kyung Wan Nam, Won Sub Yoon, Dong-Wan Kim

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Two-dimensional (2-D) nanoplates of iron-substituted calcium cobaltite (Ca 3Co 3FeO 9) are synthesized through a simple citrate-gel method. The lithium electroactivity of Ca 3Co 3FeO 9 demonstrates that this is an applicable active anode material. In this study, we focus on the reversible conversion process and internally multi-phasic, nanostructured character occurring in Ca 3Co 3FeO 9 nanoplates. Moreover, we demonstrate that in-situ formation of active/inactive nanocomposite improves the conversion reaction kinetics by accommodating the large volume changes during lithium uptake and removal, thereby achieving outstanding rate capabilities.

Original languageEnglish
Pages (from-to)1829-1835
Number of pages7
JournalJournal of Materials Chemistry
Volume19
Issue number13
DOIs
Publication statusPublished - 2009 Mar 24
Externally publishedYes

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Lithium
Calcium
Iron
Electrodes
Reaction kinetics
Citric Acid
Nanocomposites
Anodes
Gels
cobaltite

ASJC Scopus subject areas

  • Materials Chemistry
  • Chemistry(all)

Cite this

High rate capabilities induced by multi-phasic nanodomains in iron-substituted calcium cobaltite electrodes. / Ko, Young Dae; Kang, Jin Gu; Choi, Kyung Jin; Park, Jae Gwan; Ahn, Jae Pyoung; Chung, Kyung Yoon; Nam, Kyung Wan; Yoon, Won Sub; Kim, Dong-Wan.

In: Journal of Materials Chemistry, Vol. 19, No. 13, 24.03.2009, p. 1829-1835.

Research output: Contribution to journalArticle

Ko, YD, Kang, JG, Choi, KJ, Park, JG, Ahn, JP, Chung, KY, Nam, KW, Yoon, WS & Kim, D-W 2009, 'High rate capabilities induced by multi-phasic nanodomains in iron-substituted calcium cobaltite electrodes', Journal of Materials Chemistry, vol. 19, no. 13, pp. 1829-1835. https://doi.org/10.1039/b817120c
Ko, Young Dae ; Kang, Jin Gu ; Choi, Kyung Jin ; Park, Jae Gwan ; Ahn, Jae Pyoung ; Chung, Kyung Yoon ; Nam, Kyung Wan ; Yoon, Won Sub ; Kim, Dong-Wan. / High rate capabilities induced by multi-phasic nanodomains in iron-substituted calcium cobaltite electrodes. In: Journal of Materials Chemistry. 2009 ; Vol. 19, No. 13. pp. 1829-1835.
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