Sn-Ni alloy nanoparticles as anode of lithium ion battery

Sn-Ni alloy nanoparticles are synthesized readily by pulse electrodeposition method for their applications in Li-ion batteries. It is found Nickel not only affects the phasestructure and morphology of the alloy, but also impacts Li-Sn alloying and dealloying behaviors. In lithium ion batteries, the Sn-alloying electrodes deliver stronger cycling stability than the pure Sn anode. The prepared Sn-Ni alloy is characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The electrochemical tests ofthe alloying electrode shows the first discharge capacity 715 mA.h.g-1 and the reversible discharge capacity 591 mA.hg-1 over 25 cycles.

Keywords:

Li ion battery , Anode , Alloying electrode , Tin , cyclability