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Title: Large-scale synthesis of Li3V2(PO4)(3)@C composites by a modified carbothermal reduction method as cathode material for lithium-ion batteries
Authors: Zhang, L
Hu, L
Fei, LF 
Qi, JQ
Hu, YM
Wang, Y
Gu, HS
Issue Date: 2017
Publisher: Royal Society of Chemistry
Source: RSC advances, 2017, v. 7, no. 41, p. 25422-25428 How to cite?
Journal: RSC advances 
Abstract: Carbon coated Li3V2(PO4)(3) composites were prepared by a modified carbothermal reduction method. The method has the advantages of being simple and scalable, while the whole synthesis is devoid of any reducing/protecting gases, therefore, it can be directly carried out in muffle furnace. The obtained Li3V2(PO4)(3)@C composites have particles sizes from 500 nm to 3 mu m, and with homogeneous carbon coating layer thickness of about 7 nm. The battery based on this Li3V2(PO4)(3)@C composites cathode exhibits a specific discharge capacity of 130.9 mA h g(-1) at 0.1 C, and exhibits an initial specific discharge capacity of 102.8 mA h g(-1) even at 10 C and almost keeps 96.6% of initial capacity retention after 500 cycles. The performance enhancement can be directly ascribed to the robust structure merits of the Li3V2(PO4)(3)@C composites synthesized by the modified carbothermal reduction method. Furthermore, the as-developed method has the potential to be expanded to other lithium transition-metal phosphates (such as lithium iron phosphate), which conventionally need to be sintered in reductive or protective atmospheres.
ISSN: 2046-2069
EISSN: 2046-2069
DOI: 10.1039/c7ra03483k
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