Synthesis and Characterization of Silicon Based Anode Materials
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Date
2017-01-01
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Materials Today: Proceedings
Abstract
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
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Keywords
rechargeable lithium-ion battery, anode material, silicon nanoparticle
Citation
T. Ould Ely, D. Batyrbekuly, Y. Sugurbekov, D. Stambekova, M.F. Doherty, Z. Bakenov, Synthesis and Characterization of Silicon Based Anode Materials, In Materials Today: Proceedings, Volume 4, Issue 3, Part A, 2017, Pages 4502-4511