脉冲激光沉积纳米NiO薄膜

The NiO thin film electrodes were prepared by reactive pulsed laser ablation of a metallic Ni target in an oxygen ambient at different temperatures. X-ray diffraction and scanning electron microscopy measurements demonstrated that the films deposited at 600 ℃ exhibited nanocrystalline structure with an average particle size of 30 nm. Electrochemical properties of NiO films were examined by charge-discharge measurements. Excellent electrochemical performance, a high capacity retention compared to the amorphous NiO, could be achieved with nanocrystalline NiO films. The improved specific capacity, discharge rate and cycling performance might be related to nano-sized character of the thin film electrode of NiO. This NiO thin film could be used as a promising electrode material for all-solid-state thin film rechargeable Li-ion batteries.