Morphology-controlled synthesis and electrochemical performance of NiCo2O4 as anode material in lithium-ion battery application

作者：Xu, Shan; Lu, Lin; Zhang, Qing; Zheng, Hao; Liu, Lian; Yin, Shengyu; Wang, Shiquan^*; Li, Guohua; Feng, Chuanqi

来源：Journal of Nanoparticle Research, 2015, 17(9): 381.

DOI：10.1007/s11051-015-3176-1

• NiCo2O4
• Lithium-ion battery
• Anode material
• Solvothermal synthesis
• Electrochemical performance
• Energy storage

Mixed-valence oxide precursors were synthesized by a solvothermal method using NiSO4, CoSO4, and NH4HCO3 as raw materials. The precursors were heat-treated in a muffle furnace at 500 degrees C to obtain the products (NiCo2O4). The samples were characterized by X-ray diffractometer, thermogravimetric, energy-dispersive spectroscopy, scanning electron microscopy, and transmission electron microscopy. The results show that dumbbells, microspheres, and particle-like NiCo2O4 were successfully synthesized by changing the volume of solvent and solvothermal temperature. The NiCo2O4 microspheres (prepared at 180 degrees C with 30 ml solvent) as anode material for lithium-ion battery, exhibit a reversible discharge capacity of 1160 mAh g(-1) and good cycling stability (729 mAh g(-1) after 50 cycles) at a constant current of 100 mAh g(-1) in the voltage range of 0.01-3.0 V due to its high crystallinity and uniform porous morphology. Hence, the synthetic method could be extended to other high-capacity ternary metal oxide materials for lithium-ion battery application.

• 出版日期2015-9-21
• 单位浙江工业大学; 湖北大学