Issue 81, 2016

Superior electrochemical performance of N-doped nanocrystalline FeF3/C with a single-step solid-state process

Abstract

FeF3 is a promising cathode material for lithium ion batteries but its poor electronic conductivity makes it non-practical. Here, we significantly improve the electrochemical activity of FeF3 by reducing the strong ionic character of Fe–F with the replacement of some F with N atoms. N-doped nanocrystalline FeF3/C achieves the best electrochemical performance among FeF3 compounds reported to date: ∼95 mA h g−1 at 21.1C discharge rate for 250 cycles. The results illustrate that the poor electronic conductivity of metal fluorides can be controlled by doping and this enables FeF3 or metal fluorides to be practically utilized in possible applications including energy conversion and storage.

Graphical abstract: Superior electrochemical performance of N-doped nanocrystalline FeF3/C with a single-step solid-state process

Supplementary files

Article information

Article type
Communication
Submitted
09 Aug 2016
Accepted
12 Sep 2016
First published
12 Sep 2016

Chem. Commun., 2016,52, 12100-12103

Superior electrochemical performance of N-doped nanocrystalline FeF3/C with a single-step solid-state process

J. Lee and B. Kang, Chem. Commun., 2016, 52, 12100 DOI: 10.1039/C6CC06556B

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