Synthesis of TiO2 hollow nanofibers by co-axial electrospinning and its superior lithium storage capability in full-cell assembly with olivine phosphate
Kumar, Palaniswamy Suresh
Date of Issue2013
School of Physical and Mathematical Sciences
We report the formation and extraordinary Li-storage properties of TiO2 hollow nanofibers by co-axial electrospinning in both half-cell and full-cell configurations. Li-insertion properties are first evaluated as anode in half-cell configuration (Li/TiO2 hollow nanofibers) and found reversible insertion of ~0.45 moles are feasible at current density of 100 mA g–1. The half-cell displayed a good cycleability and retained 84% of initial reversible capacity after 300 galvanostatic cycles. Full-cell is fabricated with commercially available olivine phase LiFePO4 cathode under optimized mass loadings. LiFePO4¬/TiO2 hollow nanofibers cell delivered the reversible capacity of 103 mAh g–1 at current density of 100 mA g–1 with operating potential of ~1.4 V. Excellent cycleability is noted for full-cell configuration irrespective of the applied current densities and retained 88% of the reversible capacity after 300 cycles in ambient conditions at current density of 100 mA g–1.
2013 Royal Society of Chemistry. This is the author created version of a work that has been peer reviewed and accepted for publication by Nanoscale, Royal Society of Chemistry. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1039/C3NR01128C].