Facile scalable synthesis of Co₃O₄/carbon nanotube hybrids as superior anode materials for lithium-ion batteries

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• 作者：Zhiguo Fang ; Weiwei Xu ; Tao Huang ; Maolin Li ; Wanren Wang ; Yanping Liu ; Chaochao Mao ; Fanli Meng ; Mengjiao Wang ; Minghai Cheng ; Aishui Yu ; Xiaohui Guo
• 关键词：A. Nanostructures ; C. Electrochemical measurements ; C. Electron microscopy ; D. Energy storage
• 刊名：Materials Research Bulletin
• 出版年：2013
• 出版时间：October, 2013
• 年：2013
• 卷：48
• 期：10
• 页码：4419-4423
• 全文大小：1490 K

文摘

In this report, Co₃O₄/multiple-wall carbon nanotube (MWCNT) hybrid materials were synthesized via strong ultrasonication-assisted shaking and magnetic stirring processes. The prepared samples were well characterized by utilizing powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and Raman spectroscopy techniques. Results indicated that the resulting Co₃O₄ nanoparticles were highly dispersed in the MWCNT network backbone and further form Co₃O₄/MWCNT hybrid materials. The obtained Co₃O₄/MWCNT hybrids can be employed as anode electrode in Lithium-ion batteries and deliver as high as discharge capacity of 1250 mA h g^?1 at a current density of 0.2 C, additionally, 81 % of the discharge capacity for sample 2 with 20 wt. % MWCNT loading could be retained after 70 cycles, which could be associated with the specific hybrid structure of the electrode as well as the addition of MWCNT. Most importantly, the present synthetic approach is facile, controllable, and scalable, which allowing it more easily adapted to prepare other hybrid materials with specific architectures.