Facile synthesis of nanoparticles titanium oxide as high-capacity and high-capability electrode for lithium-ion batteries

Anatase TiO 2 is prepared via a facile and eco-friendly synthesis method where titanium tetra isopropoxide and sodium alginate are used as the titanium precursor and templating agent, respectively. Structural characterization of the prepared sample via X-ray diffraction and Raman spectroscopies confirm the formation of nanoparticles Titanium Oxide with anatase type structure without impurities. Further morphological characterization of the material showed the spherical shape of the particles. The prepared TiO 2 has been studied as an anode material for lithium-ion batteries. TiO 2 electrodes have delivered a reversible capacity of 266 mAh g −1 , 275 mAh g −1 with coulombic efficiencies of 70%, 75% during the first cycle under C/10 current rate for TiO 2 calcined at 300 °C and 450 °C, respectively. The activity of Ti 4+ /Ti 3+ redox couple during the lithiation/delithiation process was evidenced using X-ray Photoelectron Spectrometry. The high capacity retention was maintained for 100 cycles. The prepared nanoparticles TiO 2 has prodigious potential for large scale production of anode materials for lithium-ion batteries. Graphic abstract