镍基纳米粒子的合成及性能研究

Synthesis and Performance Investigation of Based-nickel Nanoparticles

以三辛基膦(TOP)为表面活性剂,采用高温有机液相法制备了无定形的镍纳米粒子(NiNPs)。对其催化性能的研究表明该纳米粒子具有较低的活化能,催化活性要远远优于块状的镍。将其退火后得到了镍/氧化镍(Ni/NiO)的核壳结构。研究其电化学性能发现该结构具有较高首次充放电容量,循环可逆性较为稳定,可作为良好的锂离子电池负极材料。

The amorphous nickel nanoparticals （Ni NPs） were synthesized using high-temperature organic solution method, with trioctylphosphine （TOP） as a surfactant. Catalytic properties studies had shown that the activation energy of these particles were much lower, and their catalytic activity were much better than those of bulk nickel. Nickel/Nickel oxide （Ni/NiO） core-shell nanostructures were obtaind after the annealing progress. The studies of electrochemical performance indicated that they had higher charge and discharge capacity at the first time, and the reversible cycle performance were quite stable. The experiment results indicated that these nanoparticles could be used as ideal lithium ion battery anode materials.