Hierarchical MoSe2 yolk-shell microspheres with superior Na-ion storage properties

Y. N. Ko, S. H. Choi, S. B. Park, Yun Chan Kang

Research output: Contribution to journalArticle

156 Citations (Scopus)

Abstract

Yolk-shell-structured MoSe2 microspheres were prepared via a simple selenization process of MoO3 microspheres. The yolk-shell-structured MoSe2 and MoO3 microspheres delivered initial discharge capacities of 527 and 465 mA h g-1 in the voltage range of 0.001-3 V vs. Na/Na+ at a current density of 0.2 A g-1, respectively, and their discharge capacities after 50 cycles were 433 and 141 mA h g-1, respectively. The yolk-shell-structured MoSe2 microspheres also exhibited outstanding high rate capabilities. The hierarchical yolk-shell structure comprised of wrinkled nanosheets facilitated fast Na-ion and electron kinetics, and buffered the large volume changes encountered during cycling.

Original languageEnglish
Pages (from-to)10511-10515
Number of pages5
JournalNanoscale
Volume6
Issue number18
DOIs
Publication statusPublished - 2014 Sep 21

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Microspheres
Ions
Nanosheets
Current density
Kinetics
Electrons
Electric potential
molybdenum trioxide

ASJC Scopus subject areas

  • Materials Science(all)

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Hierarchical MoSe2 yolk-shell microspheres with superior Na-ion storage properties. / Ko, Y. N.; Choi, S. H.; Park, S. B.; Kang, Yun Chan.

In: Nanoscale, Vol. 6, No. 18, 21.09.2014, p. 10511-10515.

Research output: Contribution to journalArticle

Ko, Y. N. ; Choi, S. H. ; Park, S. B. ; Kang, Yun Chan. / Hierarchical MoSe2 yolk-shell microspheres with superior Na-ion storage properties. In: Nanoscale. 2014 ; Vol. 6, No. 18. pp. 10511-10515.
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