281292 Hybrid Tin Oxide Nanotube Arrays As Anodes for Lithium Ion Batteries

Tuesday, October 30, 2012: 10:20 AM
307 (Convention Center )
Umang V. Desai and Di Gao, Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, PA

Compared to traditional anodes based on nanostructured powdered paste, directly grown, one-dimensional ordered nanostructured array offers remarkable advantages such as fast-electron transport/collection and ion diffusion, sufficient electrochemical reaction of individual nanostructures, enhanced material-electrolyte contact area and facile accommodation of the strains caused by lithium intercalation and de-intercalation. Amongst various ordered metal oxide arrays, SnO2 has been regarded as one of the most promising candidates for alternative anode material for Li-ion batteries due to the high theoretical capacity (781 mAh/g) compared to that of graphite (372 mAh/g). Thus, making 1D oriented nanostructure array of SnO2 on metal substrate over a large area and further applying it as anode of battery is highly desirable for the exploration of novel electrode materials. Large-scale growth of uniform SnO2 nanotube arrays on Ti substrate, with high orientation consistency, was achieved through a low temperature hydrothermal process. Furthermore, hybrid Sn-SnO2 nanotubes were created by reducing the as-synthesized SnO2 nanotubes.  The performance of these arrays as anode materials in lithium-ion batteries was evaluated.

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See more of this Session: Nanomaterials for Energy Storage I
See more of this Group/Topical: Topical 5: Nanomaterials for Energy Applications