Synthesis and Electrochemical Performance of Graphene Wrapped Sn xTi1−x O2 Nanoparticles as an Anode Material for Li-Ion Batteries

الملخص EN

Ever-growing development of Li-ion battery has urged the exploitation of new materials as electrodes.

Here, Sn x Ti 1 - x O 2 solid-solution nanomaterials were prepared by aqueous solution method.

The morphology, structures, and electrochemical performance of Sn x Ti 1 - x O 2 nanoparticles were systematically investigated.

The results indicate that Ti atom can replace the Sn atom to enter the lattice of SnO2 to form substitutional solid-solution compounds.

The capacity of the solid solution decreases while the stability is improved with the increasing of the Ti content.

Solid solution with x of 0.7 exhibits the optimal electrochemical performance.

The Sn0.7Ti0.3O2 was further modified by highly conductive graphene to enhance its relatively low electrical conductivity.

The Sn0.7Ti0.3O2/graphene composite exhibits much improved rate performance, indicating that the Sn x Ti 1 - x O 2 solid solution can be used as a potential anode material for Li-ion batteries.