多壁碳纳米管@非晶碳@Co9S8纳米复合材料：用于先进锂离子电池的高容量、长寿命负极材料。
Multiwalled carbon nanotube@a-C@Co9S8 nanocomposites: a high-capacity and long-life anode material for advanced lithium ion batteries.
作者信息
Zhou Yanli, Yan Dong, Xu Huayun, Liu Shuo, Yang Jian, Qian Yitai
机构信息
Key Laboratory of Colloid and Interface Chemistry, Ministry of Education School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P.R. China.
出版信息
Nanoscale. 2015 Feb 28;7(8):3520-5. doi: 10.1039/c4nr07143c.
A one-dimensional MWCNT@a-C@Co9S8 nanocomposite has been prepared via a facile solvothermal reaction followed by a calcination process. The amorphous carbon layer between Co9S8 and MWCNT acts as a linker to increase the loading of sulfides on MWCNT. When evaluated as anode materials for lithium ion batteries, the MWCNT@a-C@Co9S8 nanocomposite shows the advantages of high capacity and long life, superior to Co9S8 nanoparticles and MWCNT@Co9S8 nanocomposites. The reversible capacity could be retained at 662 mA h g(-1) after 120 cycles at 1 A g(-1). The efficient synthesis and excellent performances of this nanocomposite offer numerous opportunities for other sulfides as a new anode for lithium ion batteries.
通过简便的溶剂热反应并随后进行煅烧过程，制备了一维MWCNT@a-C@Co9S8纳米复合材料。Co9S8和MWCNT之间的无定形碳层充当连接体，以增加MWCNT上硫化物的负载量。当作为锂离子电池的负极材料进行评估时，MWCNT@a-C@Co9S8纳米复合材料显示出高容量和长寿命的优势，优于Co9S8纳米颗粒和MWCNT@Co9S8纳米复合材料。在1 A g(-1)下循环120次后，可逆容量可保持在662 mA h g(-1)。这种纳米复合材料的高效合成及其优异性能为其他硫化物作为锂离子电池的新型负极提供了众多机会。
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