期刊
NANOSCALE
卷 5, 期 14, 页码 6338-6343出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3nr00380a
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- GRF grant from the Research Grants Council of the Hong Kong S.A.R., China [CityU 100510]
- National Natural Science Foundation of China [21001117]
Graphene-wrapped FeF3 nanocrystals (FeF3/G) have been successfully fabricated for the first time by a vapour-solid method, which can be generalized to synthesize other metal fluorides. The as-synthesized FeF3/G delivers a charge capacity of 155, 113, and 73 mA h g(-1) at 104, 502, and 1040 mA g(-1) in turn, displaying superior rate capability to bare FeF3. Moreover, it exhibits stable cyclability over 100 cycles with a charge capacity of 185.6 and 119.8 mA h g(-1) at 20.8 and 208 mA g(-1), respectively, which could be ascribed to the buffering effect and lowered resistance from the graphene. This versatile vapour-solid method and the improved cyclability provide a promising avenue for the application of metal fluorides as cathode materials.
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