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Penne‐Like MoS2/Carbon Nanocomposite as Anode for Sodium‐Ion‐Based Dual‐Ion Battery
Small ( IF 13.3 ) Pub Date : 2018-02-05 , DOI: 10.1002/smll.201703951
Haili Zhu 1 , Fan Zhang 1 , Jinrui Li 1 , Yongbing Tang 1
Affiliation  

The dual‐ion battery (DIB) system has attracted great attention owing to its merits of low cost, high energy, and environmental friendliness. However, the DIBs based on sodium‐ion electrolytes are seldom reported due to the lack of appropriate anode materials for reversible Na+ insertion/extraction. Herein, a new sodium‐ion based DIB named as MoS2/C‐G DIB using penne‐like MoS2/C nanotube as anode and expanded graphite as cathode is constructed and optimized for the first time. The hierarchical MoS2/C nanotube provides expanded (002) interlayer spacing of 2H‐MoS2, which facilitates fast Na+ insertion/extraction reaction kinetics, thus contributing to improved DIB performance. The MoS2/C‐G DIB delivers a reversible capacity of 65 mA h g−1 at 2 C in the voltage window of 1.0–4.0 V, with good cycling performance for 200 cycles and 85% capacity retention, indicating the feasibility of potential applications for sodium‐ion based DIBs.

中文翻译:

类似于Penne-MoS2 /碳纳米复合材料的基于钠离子的双离子电池阳极

双离子电池(DIB)系统由于其低成本,高能耗和环境友好的优点而备受关注。但是,由于缺乏用于可逆Na +插入/萃取的合适阳极材料,很少报道基于钠离子电解质的DIB 。在此,首次构建并优化了一种新的基于钠离子的DIB,名为MoS 2 / C-G DIB,它使用类戊二烯样的MoS 2 / C纳米管作为阳极,并使用膨胀石墨作为阴极。分层的MoS 2 / C纳米管提供了2H-MoS 2的扩展(002)层间距,这有助于快速的Na +插入/萃取反应动力学,从而有助于改善DIB性能。MoS2 / C-G DIB在2 C时在1.0–4.0 V的电压范围内可提供65 mA hg -1的可逆容量,具有200次循环的良好循环性能和85%的容量保持率,表明钠盐潜在应用的可行性基于离子的DIB。
更新日期:2018-02-05
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