Journal
SMALL
Volume 13, Issue 18, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.201603148
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Funding
- National Science Foundation of China [21303262]
- National Key Research Program of China [2016YFB0100205]
- China Postdoctoral Science Foundation [2016M592383]
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LiV3O8 nanorods with controlled size are successfully synthesized using a nonionic triblock surfactant Pluronic-F127 as the structure directing agent. X-ray diffraction, scanning electron microscopy, and transmission electron microscopy techniques are used to characterize the samples. It is observed that the nanorods with a length of 4-8 mu m and diameter of 0.5-1.0 mu m distribute uniformly. The resultant LiV3O8 nanorods show much better performance as cathode materials in lithium-ion batteries than normal LiV3O8 nanoparticles, which is associated with the their unique micronano- like structure that can not only facilitate fast lithium ion transport, but also withstand erosion from electrolytes. The high discharge capacity (292.0 mAh g(-1) at 100 mA g(-1)), high rate capability (138.4 mAh g(-1) at 6.4 A g(-1)), and long lifespan (capacity retention of 80.5% after 500 cycles) suggest the potential use of LiV3O8 nanorods as alternative cathode materials for high-power and long-life lithium ion batteries. In particular, the synthetic strategy may open new routes toward the facile fabrication of nanostructured vanadium-based compounds for energy storage applications.
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