Sn-modified Ni-nanowire array films prepared by electrodeposition and their electrochemical properties as an anode material of lithium-ion batteries

摘要

Ni-nanowire array films were prepared by general galvanostatic electrodeposition employing a polycarbonate membrane filter (pore diameter: 0.1 µm or 0.8 µm) as a template and subsequent dissolution of the membrane filter in chloroform. Thereafter the Ni-nanowire array films were modified with Sn by pulsed electrodeposition. Morphology of Sn-modified Ni-nanowire array films obtained was largely dependent on the microstructure of the membrane filter and the conditions of pulsed electrodeposition of Sn. It was confirmed that uniform deposition of Sn right into the Ni-nanowire array structure improved charge-discharge characteristics of the Sn-modified Ni-nanowire array films as an anode of lithium-ion batteries.