Synthesis of MoS2@C Nanotubes Via the Kirkendall Effect with Enhanced Electrochemical Performance for Lithium Ion and Sodium Ion Batteries,Small

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Synthesis of MoS2@C Nanotubes Via the Kirkendall Effect with Enhanced Electrochemical Performance for Lithium Ion and Sodium Ion Batteries
Small ( IF 13.0 ) Pub Date : 2016-03-21 , DOI: 10.1002/smll.201600043
Xueqian Zhang ₁ , Xiaona Li ₁ , Jianwen Liang ₁ , Yongchun Zhu ₁ , Yitai Qian ₁

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A MoS₂@C nanotube composite is prepared through a facile hydrothermal method, in which the MoS₂ nanotube and amorphous carbon are generated synchronically. When evaluated as an anode material for lithium ion batteries (LIB), the MoS₂@C nanotube manifests an enhanced capacity of 1327 mA h g⁻¹ at 0.1 C with high initial Coulombic efficiency (ICE) of 92% and with capacity retention of 1058.4 mA h g⁻¹ (90% initial capacity retention) after 300 cycles at a rate of 0.5 C. A superior rate capacity of 850 mA h g⁻¹ at 5 C is also obtained. As for sodium ion batteries, a specific capacity of 480 mA h g⁻¹ at 0.5 C is achieved after 200 cycles. The synchronically formed carbon and stable hollow structure lead to the long cycle stability, high ICE, and superior rate capability. The good electrochemical behavior of MoS₂@C nanotube composite suggests its potential application in high‐energy LIB.

中文翻译：

通过增强的锂离子和钠离子电池电化学性能的Kirkendall效应合成MoS2 @ C纳米管

通过简便的水热法制备了MoS ₂ @C纳米管复合材料，其中MoS ₂纳米管与非晶碳同步生成。当被评估为锂离子电池（LIB）的负极材料时，MoS ₂ @C纳米管在0.1 C时表现出1327 mA hg ^-1的增强容量，初始库伦效率（ICE）为92％，容量保持率为1058.4 300 hg ^-1（90％初始容量保持率）在300次循环后以0.5 C的速率进行。在5 C时也可获得850 mA hg ^-1的优良速率容量。至于钠离子电池，比容量为480 mA hg ^-1200个循环后达到0.5C。同步形成的碳和稳定的空心结构导致长周期稳定性，高ICE和高倍率性能。MoS ₂ @C纳米管复合材料的良好电化学行为表明其在高能LIB中的潜在应用。

更新日期：2016-03-21

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