Sun Shijiao, Zhao Xiangyu, Yang Meng, Ma Liqun, Shen Xiaodong
College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, China.
Nanomaterials (Basel). 2015 Dec 17;5(4):2335-2347. doi: 10.3390/nano5042335.
Co₃O₄ nanorods were prepared by a facile hydrothermal method. Eco-friendly deionized water rather than organic solvent was used as the hydrothermal media. The as-prepared Co₃O₄ nanorods are composed of many nanoparticles of 30-50 nm in diameter, forming a finger-like morphology. The Co₃O₄ electrode shows a specific capacitance of 265 F g at 2 mV s in a supercapacitor and delivers an initial specific discharge capacity as high as 1171 mAh g at a current density of 50 mA g in a lithium ion battery. Excellent cycling stability and electrochemical reversibility of the Co₃O₄ electrode were also obtained.
通过简便的水热法制备了Co₃O₄纳米棒。使用环保的去离子水而非有机溶剂作为水热介质。所制备的Co₃O₄纳米棒由许多直径为30 - 50 nm的纳米颗粒组成，形成手指状形态。Co₃O₄电极在超级电容器中于2 mV s时显示出265 F g的比电容，并且在锂离子电池中于50 mA g的电流密度下提供高达1171 mAh g的初始比放电容量。还获得了Co₃O₄电极优异的循环稳定性和电化学可逆性。
