Amorphous SnO2–SiO2 thin films with reticular porous morphology for lithium-ion batteries

Zhang, J.; Chen, L. B.; Li, C. C.; Wang, T. H.
December 2008
Applied Physics Letters;12/29/2008, Vol. 93 Issue 26, p264102
Academic Journal
Amorphous SnO2–SiO2 thin films with reticular porous morphology were fabricated by electrostatic spray deposition method for lithium-ion batteries. An initial discharge capacity of the SnO2–SiO2 electrodes with 15% of SiO2 was about 1271 mA h/g, and the reversible capacity stayed in the range of 869–501 mA h/g during the successive 100 cycles, but only 1141 and 694–174 mA h/g for the pure SnO2 electrodes. The high capacity was attributed to the addition of SiO2, which facilitated the formation of the Li–Sn alloy. The improved cycle performance was due to reticular porous structure, which accommodated the volume change during cycling.


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