Synthesis and properties of carbon-doped Li2SnO3 nanocomposite as cathode material for lithium-ion batteries

Abstract: Tin-based oxides Li2SnO3 precursor and carbon-doped Li2SnO3 (Li2SnO3/C) nanocomposite with good cycle performance for lithium-ion batteries have been synthesized by sol–gel preparation and carbothermic reduction process. Results show that Li2SnO3/C is composed of regular rod nanoparticles (20–30nm) with clear lattice fringes, which exhibit better electrochemical properties than Li2SnO3. At a current density of 60mAg−1 in the voltage about 0.05–2.0V, the first discharge–charge capacities of the composite Li2SnO3/C are 1671.1mAhg−1 and 1558.6mAhg−1 while they are 1909.4mAhg−1 and 1745.8mAhg−1 to Li2SnO3. The retain capacity (576.9mAhg−1) of Li2SnO3/C is higher than that of Li2SnO3 after 50 cycles. [Copyright &y& Elsevier]