期刊
SMALL
卷 14, 期 13, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.201703951
关键词
anodes; dual-ion batteries; MoS2/carbon nanocomposites; sodium-ion electrolyte
类别
资金
- National Natural Science Foundation of China [51602337]
- Shenzhen Peacock Plan [KQTD20161129150510559, KQJSCX2017033116124476]
- Shenzhen Science and Technology Planning Project [JCYJ20160122143155757, JSGG20160301173854530, JSGG20160301155933051, JSGG2016022920-2951528, JCYJ20170307171232348, JSGG20170413153302942]
- China Postdoctoral Science Foundation [2016M602554]
- Guangdong Postdoctoral Science Foundation [2017A030310482]
- Guangdong Engineering Technology Research Center Foundation [20151487]
- Shenzhen Engineering Laboratory Foundation [20151837]
- Scientific Equipment Project of Chinese Academy of Sciences [GJHS20170314161200165]
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.
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