Microstructure and electrochemical properties of rapidly solidified Si–Ni alloys as anode for lithium-ion batteries

Nurzhan Umirov, Deok Ho Seo, Taekeun Kim, Hyang Yeon Kim, Sung Soo Kim

Research output: Contribution to journalArticle

Abstract

This paper reports an electrochemically highly reversible Si–Ni alloy based electrode through the microstructure and composition analysis using XRD and HR-TEM combined with EDS. Nano-Si (∼200 nm) embedded in the inactive NiSi2/NiSi matrix synthesized using industrial-scale rapid solidification process (RSP). In addition, comprehensive analysis of HR-TEM images, dQ/dV and OCV plots provides powerful insights into the cycle life degradation of Si-alloys caused by the material state change upon cycling.

LanguageEnglish
Pages351-360
Number of pages10
JournalJournal of Industrial and Engineering Chemistry
Volume71
DOIs
Publication statusPublished - Mar 25 2019

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Electrochemical properties
Anodes
Transmission electron microscopy
Microstructure
Rapid solidification
Life cycle
Energy dispersive spectroscopy
Degradation
Electrodes
Chemical analysis
Lithium-ion batteries

Keywords

  • Anode
  • Li-ion battery
  • Melt-spinning
  • Phase diagram
  • Silicon-based alloy

ASJC Scopus subject areas

  • Chemical Engineering(all)

Cite this

Microstructure and electrochemical properties of rapidly solidified Si–Ni alloys as anode for lithium-ion batteries. / Umirov, Nurzhan; Seo, Deok Ho; Kim, Taekeun; Kim, Hyang Yeon; Kim, Sung Soo.

In: Journal of Industrial and Engineering Chemistry, Vol. 71, 25.03.2019, p. 351-360.

Research output: Contribution to journalArticle

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