Template-free solvothermal synthesis of yolk–shell V2O5microspheres as cathode materials for Li-ion batteriesElectronic supplementary information (ESI) available: Method, more SEM and TEM characterizations, electrochemical performances of completely hollow and solid V2O5microspheres. See DOI: 10.1039/c1cc13779d

Uniform yolk–shell V2O5microspheres were synthesized viaa facile template-free solvothermal route and subsequent calcination treatment in air. The resulting cathode materials showed a high specific capacity of 220 mA h g−1after 30 cycles and good rate capability. [ABSTRACT FROM AUTHOR]