Synthesis and Characterization of Silicon Based Anode Materials

T. Ould Ely, D. Batyrbekuly, Y. Sugurbekov, D. Stambekova, M. F. Doherty, Z. Bakenov

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We have synthesized amorphous silicon-nanomaterials displaying high capacity and stable cyclability using an original organometallic approach. The method is based on the decomposition of silicon compounds 1Si-P1-U-2016 and 1Si-P2-C-2016, where silicon is bound to four atoms bearing an electron-withdrawing group on the β-position. These compounds decompose under argon at temperature below 500 °C. Scanning Electron Microscopy displays particles with size less than 50 nm, considerably smaller than the critical size above which silicon nanostructures will pulverize [1]. The nanosilicon particles, remain amorphous upon sintering under argon at 1150 °C, and crystallize only above 1400 °C in air, yielding SiO2 (Tetragonal, space group P41212). The silicon nanoparticles show excellent cycling performance, retaining a specific capacity of 1000 mAh g-1, and maintain more than 98% of its initial reversible capacity after 150 cycles. High specific capacity and stable cycle performance of the synthesized silicon makes it a promising anode material for lithium ion batteries

Original languageEnglish
Pages (from-to)4502-4511
Number of pages10
JournalMaterials Today: Proceedings
Volume4
Issue number3
DOIs
Publication statusPublished - 2017

Keywords

  • anode material
  • rechargeable lithium-ion battery
  • silicon nanoparticle

ASJC Scopus subject areas

  • Materials Science(all)

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    Ould Ely, T., Batyrbekuly, D., Sugurbekov, Y., Stambekova, D., Doherty, M. F., & Bakenov, Z. (2017). Synthesis and Characterization of Silicon Based Anode Materials. Materials Today: Proceedings, 4(3), 4502-4511. https://doi.org/10.1016/j.matpr.2017.04.023