A magnesiothermic reaction process for the scalable production of mesoporous silicon for rechargeable lithium batteries.

@article{Xing2013AMR,
  title={A magnesiothermic reaction process for the scalable production of mesoporous silicon for rechargeable lithium batteries.},
  author={An Xing and Jing Zhang and Zhihao Bao and Yongfeng Mei and Ari S. Gordin and Kenneth H. Sandhage},
  journal={Chemical communications},
  year={2013},
  volume={49 60},
  pages={
          6743-5
        }
}
Mesoporous, 3-D, nanocrystalline Si has been synthesized via the magnesiothermic reduction of SiO particles at a peak temperature of only 500 °C in a scalable flow-through reactor setup. Such 3-D porous Si as an anode material exhibited high, reversible capacities (i.e., >900 mA h g(-1) after 160 charge-discharge cycles at 1000 mA g(-1)). 

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References

SHOWING 1-10 OF 25 REFERENCES
Superior lithium electroactive mesoporous Si@carbon core-shell nanowires for lithium battery anode material.
TLDR
Mesoporous Si@carbon core-shell nanowires with a diameter of approximately 6.5 nm were prepared for a lithium battery anode material using a SBA-15 template and demonstrated excellent first charge capacity and retention after 80 cycles.
Silicon nanotube battery anodes.
TLDR
The capacity in a Li-ion full cell consisting of a cathode of LiCoO2 and anode of Si nanotubes demonstrates a 10 times higher capacity than commercially available graphite even after 200 cycles.
Porous Si anode materials for lithium rechargeable batteries
Si anode materials for lithium rechargeable batteries have received much attention due to their high capacity. The Si itself can alloy with lithium up to Li4.4Si, corresponding to 4212 mAh/g (4.4Li +
Formation of Mg2Si from solid silicon monoxide, and solid-state comproportionation between Mg2Si and SiO
The first reduction reactions of solid SiO are reported. When SiO is heated with elemental magnesium, Mg2Si is formed at about 300 °C. The silicide disproportionates with excess SiO at about °C to
Failure Modes of Silicon Powder Negative Electrode in Lithium Secondary Batteries
Si composite negative electrodes for lithium secondary batteries degrade in the dealloying period with an abrupt increase in internal resistance that is caused by a breakdown of conductive network
A Major Constituent of Brown Algae for Use in High-Capacity Li-Ion Batteries
TLDR
It is shown that mixing Si nanopowder with alginate, a natural polysaccharide extracted from brown algae, yields a stable battery anode possessing reversible capacity eight times higher than that of the state-of-the-art graphitic anodes.
Scalable approach to multi-dimensional bulk Si anodes via metal-assisted chemical etching
Specific design and optimization of the configuration of micro-scale materials can effectively enhance battery performance, including volumetric density. Herein, we employed commercially available
...
1
2
3
...