Wet-chemical synthesis of phase-pure FeOF nanorods as high-capacity cathodes for sodium-ion batteries

Jian Zhu; Da Deng

doi:10.1002/anie.201410572

Wet-chemical synthesis of phase-pure FeOF nanorods as high-capacity cathodes for sodium-ion batteries

Angew Chem Int Ed Engl. 2015 Mar 2;54(10):3079-83. doi: 10.1002/anie.201410572. Epub 2015 Jan 21.

Authors

Jian Zhu¹, Da Deng

Affiliation

¹ Department of Chemical Engineering and Materials Science, Wayne State University, 5050 Anthony Wayne Drive, Detroit, MI 48202 (USA).

PMID: 25604810
DOI: 10.1002/anie.201410572

Abstract

It is challenging to prepare phase-pure FeOF by wet-chemical methods. Furthermore, nanostructured FeOF has never been reported. In this study, hierarchical FeOF nanorods were synthesized through a facile, one-step, wet-chemical method by the use of just FeF3⋅3H2O and an alcohol. It was possible to significantly control the FeOF nanostructure by the selection of alcohols with an appropriate molecular structure. A mechanism for the formation of the nanorods is proposed. An impressive high specific capacity of approximately 250 mAh g(-1) and excellent cycling and rate performances were demonstrated for sodium storage. The hierarchical FeOF nanorods are promising high-capacity cathodes for SIBs.

Keywords: electrochemistry; iron oxyfluoride; nanorods; sodium-ion batteries; wet chemistry.