Preparation of carbon coated MoO2 nanobelts and their high performance as anode materials for lithium ion batteries
Preparation of carbon coated MoO2 nanobelts and their high performance as anode materials for lithium ion batteries
复制标题
碳包覆MoO2纳米带的制备及其高性能锂离子电池负极材料
DOI：
10.1039/c2jm31364b
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发表时间：
2012-01-01
影响因子：
--
通讯作者：
Wu, Yuping
中科院分区：
文献类型：
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作者：
Yang, Lichun;Liu, Lili;Wu, Yuping
以α-MoO 3纳米带为前驱体和自模板剂，乙醇为还原剂，葡萄糖为碳源，采用水热法，在惰性气氛下煅烧，成功制备了碳包覆MoO 2纳米带。在葡萄糖缩聚产物多糖的保护下，在还原和碳化过程中可以很好地保持一维形貌。作为锂离子电池的负极材料进行测试，碳涂覆的MoO 2纳米带在第一次循环中在100 mA g-1的电流密度下表现出769.3 mA h g-1的可逆容量，并且在30次循环后保持80.2%的容量。当电流密度增大时，该材料表现出高倍率性能和良好的循环性能。
Carbon coated MoO2 nanobelts were successfully synthesized via a hydrothermal method followed by calcination under inert atmosphere, using α-MoO3 nanobelts as the precursor and self-template, ethanol as the reducer and glucose as the carbon source. Under the protection of polysaccharide resulting from glucose polycondensation, the 1-D morphology can be well retained during the reduction and carbonization processes. Tested as anode materials for lithium ion batteries, the carbon coated MoO2 nanobelts exhibit a reversible capacity of 769.3 mA h g−1 at a current density of 100 mA g−1 in the first cycle, and retain 80.2% of the capacity after 30 cycles. When the current density increases, this material shows high rate capability and good cycling performance.