| Autor: |
Suqing Wang, Zhenda Lu, Da Wang, Chunguang Li, Chunhua Chen, Yadong Yin |
| Zdroj: |
Journal of Materials Chemistry; Apr2011, Vol. 21 Issue 17, p6365-6369, 5p |
| Abstrakt: |
Monodisperse V2O5microspheres with a porous structure were synthesized by a very simple hydrolysis method and subsequent reduction/oxidation treatment at high temperatures. The porous V2O5used as a cathode material for lithium-ion batteries (LIBs) shows a stable and highly reversible capacity. It also shows excellent low-temperature behavior with a reversible capacity of 102 mA h g−1at −20 °C. The excellent performance can be attributed to the porous structure of the V2O5spheres, which are more electrochemically active due to a large interfacial contact area with the electrolyte. We believe the strategy of creating porosity may be extended to other electrode materials to improve the performance of lithium ion batteries. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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