Phase-pure β-NiMoO4 yolk-shell spheres for high-performance anode materials in lithium-ion batteries

Jee Hyun Ahn, Gi Dae Park, Yun Chan Kang, Jong Heun Lee

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

Phase-pure 3-NiMoO4 yolk-shell spheres for lithium-ion battery anodes were prepared for the first time by one-pot spray pyrolysis, and their electrochemical properties were investigated. The yolk-shellstructured 3-NiMoO4 powders exhibited high initial discharge/charge capacities (1634/1253 mA h g1) at a current density of 1000 mAg1. After 200 cycles, these powders exhibited a high discharge capacity of 1292 mAhg1, whereas the initial discharge capacity (1341 mAhg1) of the filled structured NiMoO4 powders was dramatically decreased to 479 mAhg1. The significant enhancement of the cycling performance of the 3-NiMoO4 powders with ultrafine crystallite size was attributed to the structural stability of the yolk-shell structure.

Original languageEnglish
Pages (from-to)102-110
Number of pages9
JournalElectrochimica Acta
Volume174
Issue number1
DOIs
Publication statusPublished - 2015

Keywords

  • Energy conversion
  • Energy storage materials
  • Lithium ion batteries
  • Nanostructures
  • Synthesis design

ASJC Scopus subject areas

  • Electrochemistry
  • Chemical Engineering(all)

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