Ultra-small nanoparticles of MgTi2O5 embedded in carbon rods with superior rate performance for sodium ion batteries.

Confinement of ultra-small MgTi2O5 nanoparticles in carbon is demonstrated to be an efficient method for fabricating long cycle-life anode material for sodium ion batteries. Superior rate and excellent cyclic capabilities as well as high Coulombic efficiency of the MgTi2O5-C nanocomposite, obtained from pyrolysis of a single molecule precursor, are shown.