期刊
ADVANCED FUNCTIONAL MATERIALS
卷 28, 期 34, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201801806
关键词
anode materials; electrolytes; reduced graphene oxide; sodium-ion batteries; VS4
类别
资金
- National Natural Science Foundations of China [51172034, 61301052]
- National Defense Science and technology innovation special zone project [17-163-13-ZT-009-125-001]
- International cooperation projects of Sichuan Provincial Department of science and technology [2017HH0067, 2017HH0101]
- U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Science and Engineering Division
- ORNL's Center for Nanophase Materials Sciences - Scientific User Facilities Division of U.S. Department of Energy
Room-temperature sodium-ion batteries have attracted great attentions for large-scale energy storage applications in renewable energy. However, exploring suitable anode materials with high reversible capacity and cyclic stability is still a challenge. The VS4, with parallel quasi-1D chains structure of V4+(S-2(2-))(2), which provides large interchain distance of 5.83 angstrom and high capacity, has showed great potential for sodium storage. Here, the uniform cuboid-shaped VS4 nanoparticles are prepared as anode for sodium-ion batteries by the controllable of graphene oxide (GO)-template contents. It exhibits superb electrochemical performances of high-specific charge capacity (approximate to 580 mAh center dot g(-1) at 0.1 A center dot g(-1)), long-cycle-life (approximate to 98% retain at 0.5 A center dot g-(1) after 300 cycles), and high rates (up to 20 A center dot g(-1)). In addition, electrolytes are optimized to understand the sodium storage mechanism. It is thus demonstrated that the findings have great potentials for the applications in high-performance sodium-ion batteries.
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