Abstract
We report on the facile synthesis of porous silicon structure via magnesiothermic reduction followed by coating of the surface with TiSi2. These modifications not only showed significant promise in overcoming the drastic volume change during charge and discharge cycles but also in improving the relatively low conductivity of silicon. The synthesized porous structure with a highly electrically conductive coating layer significantly enhanced the electrochemical performance in terms of cyclic stability and rate capability. The TiSi2 coating layer, which has good electrical conductivity and physical strength, enhances the conductivity and maintains the Si structure during cycling. This combination of porous structure via magnesiothermic reduction and highly conductive TiSi2 coating provides a synergistic effect, which can be seen in the improvements in electrochemical performance. This synthesis demonstrates a promising method for producing high capacity anode materials for next generation LIBs.
| Original language | English |
|---|---|
| Pages (from-to) | 256-262 |
| Number of pages | 7 |
| Journal | Electrochimica Acta |
| Volume | 151 |
| DOIs | |
| Publication status | Published - 2015 Jan 1 |
| Externally published | Yes |
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Keywords
- anode
- lithium ion batteries
- magnesiothermic reduction
- silicon
- titanium silicide
ASJC Scopus subject areas
- Chemical Engineering(all)
- Electrochemistry
Cite this
Titanium silicide coated porous silicon nanospheres as anode materials for lithium ion batteries. / Kim, Young Min; Ahn, Jihoon; Yu, Seung-Ho; Chung, Dong Young; Lee, Kyung Jae; Lee, Jin Kyu; Sung, Yung Eun.
In: Electrochimica Acta, Vol. 151, 01.01.2015, p. 256-262.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Titanium silicide coated porous silicon nanospheres as anode materials for lithium ion batteries
AU - Kim, Young Min
AU - Ahn, Jihoon
AU - Yu, Seung-Ho
AU - Chung, Dong Young
AU - Lee, Kyung Jae
AU - Lee, Jin Kyu
AU - Sung, Yung Eun
PY - 2015/1/1
Y1 - 2015/1/1
N2 - We report on the facile synthesis of porous silicon structure via magnesiothermic reduction followed by coating of the surface with TiSi2. These modifications not only showed significant promise in overcoming the drastic volume change during charge and discharge cycles but also in improving the relatively low conductivity of silicon. The synthesized porous structure with a highly electrically conductive coating layer significantly enhanced the electrochemical performance in terms of cyclic stability and rate capability. The TiSi2 coating layer, which has good electrical conductivity and physical strength, enhances the conductivity and maintains the Si structure during cycling. This combination of porous structure via magnesiothermic reduction and highly conductive TiSi2 coating provides a synergistic effect, which can be seen in the improvements in electrochemical performance. This synthesis demonstrates a promising method for producing high capacity anode materials for next generation LIBs.
AB - We report on the facile synthesis of porous silicon structure via magnesiothermic reduction followed by coating of the surface with TiSi2. These modifications not only showed significant promise in overcoming the drastic volume change during charge and discharge cycles but also in improving the relatively low conductivity of silicon. The synthesized porous structure with a highly electrically conductive coating layer significantly enhanced the electrochemical performance in terms of cyclic stability and rate capability. The TiSi2 coating layer, which has good electrical conductivity and physical strength, enhances the conductivity and maintains the Si structure during cycling. This combination of porous structure via magnesiothermic reduction and highly conductive TiSi2 coating provides a synergistic effect, which can be seen in the improvements in electrochemical performance. This synthesis demonstrates a promising method for producing high capacity anode materials for next generation LIBs.
KW - anode
KW - lithium ion batteries
KW - magnesiothermic reduction
KW - silicon
KW - titanium silicide
UR - http://www.scopus.com/inward/record.url?scp=84911944801&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84911944801&partnerID=8YFLogxK
U2 - 10.1016/j.electacta.2014.11.016
DO - 10.1016/j.electacta.2014.11.016
M3 - Article
VL - 151
SP - 256
EP - 262
JO - Electrochimica Acta
JF - Electrochimica Acta
SN - 0013-4686
ER -