Zhang Hui, Wu Jianbo, Zhai Chuanxin, Ma Xiangyang, Du Ning, Tu Jiangping, Yang Deren
State Key Lab of Silicon Materials and Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China.
Nanotechnology. 2008 Jan 23;19(3):035711. doi: 10.1088/0957-4484/19/03/035711. Epub 2007 Dec 14.
We have developed a simple approach for the large-scale synthesis of cobalt nitrate carbonate hydroxide hydrate (Co(CO(3))(0.35)(NO(3))(0.2)(OH)(1.1)·1.74H(2)O) nanowires via the hydrothermal process using sodium hydroxide and formaldehyde as mineralizers at 120 °C. The porous Co(3)O(4) nanorods 10-30 nm in diameter and hundreds of nanometres in length have been fabricated from the above-mentioned multicomponent nanowires by calcination at 400 °C. The morphology and structure of cobalt nitrate carbonate hydroxide hydrate nanowires and Co(3)O(4) nanorods have been characterized by transmission electron microscopy (TEM), field emission scanning electron microscopy (FESEM), high resolution transmission electron microscopy (HRTEM) and x-ray powder diffraction (XRD). Moreover, the porous Co(3)O(4) nanorods have been applied in the negative electrode materials for lithium ion batteries, which exhibit high electrochemical performance.
我们已经开发出一种简单的方法，可在120°C下通过水热法，以氢氧化钠和甲醛作为矿化剂，大规模合成硝酸碳酸钴氢氧化物水合物（Co(CO(3))(0.35)(NO(3))(0.2)(OH)(1.1)·1.74H(2)O）纳米线。通过在400°C下煅烧上述多组分纳米线，制备出了直径为10 - 30纳米、长度为数百纳米的多孔Co(3)O(4)纳米棒。采用透射电子显微镜（TEM）、场发射扫描电子显微镜（FESEM）、高分辨率透射电子显微镜（HRTEM）和X射线粉末衍射（XRD）对硝酸碳酸钴氢氧化物水合物纳米线和Co(3)O(4)纳米棒的形貌和结构进行了表征。此外，多孔Co(3)O(4)纳米棒已应用于锂离子电池的负极材料，表现出高电化学性能。
