In situ electrochemical scanning probe microscopy of lithium battery cathode materials:: Vanadium pentoxide (V2O5)

被引：0
作者：
Bullard, JW [1 ]
Smith, RL [1 ]
机构：
[1] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA
来源：
SOLID STATE IONICS-2002 | 2003年 / 756卷
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D O I：
暂无
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Atomic force microscopy was used to characterize the structural evolution of the V2O5(001) surface during the electrochemical cycling of lithium. With Li insertion, nanometer-scale pits develop at the V2O5(001) surface. The pits first appear as the composition of the crystal approaches Li0.0006V2O5. Pit nucleation and growth continue through further discharge, resulting in a micro-porous (001) surface morphology. During subsequent Li extraction, cracks develop along the V2O5 <010> axis. Surface regions in the vicinity of these cracks "swell" during ensuing lithiation reactions, suggesting that the cracks locally facilitate Li uptake.
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页码：273 / 278
页数：6
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