Issue 14, 2013

Large-scale fabrication of graphene-wrapped FeF3nanocrystals as cathode materials for lithium ion batteries

Abstract

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.

Graphical abstract: Large-scale fabrication of graphene-wrapped FeF3 nanocrystals as cathode materials for lithium ion batteries

Supplementary files

Article information

Article type
Communication
Submitted
22 Jan 2013
Accepted
29 Apr 2013
First published
07 May 2013

Nanoscale, 2013,5, 6338-6343

Large-scale fabrication of graphene-wrapped FeF3 nanocrystals as cathode materials for lithium ion batteries

R. Ma, Z. Lu, C. Wang, H. Wang, S. Yang, L. Xi and J. C. Y. Chung, Nanoscale, 2013, 5, 6338 DOI: 10.1039/C3NR00380A

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