In situ Mössbauer spectroscopy confirms that fluoroethylene carbonate stabilizes Fe4+ in charged NaFeO2

Iddrisu Bachokun Abdul Razak; Dhilip Kanna Ashok Kumar; Bomin Li; Emma Anne Lynch; Dennis Brown; Yingwen Cheng

doi:10.1039/D5CC00450K

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In situ Mössbauer spectroscopy confirms that fluoroethylene carbonate stabilizes Fe⁴⁺ in charged NaFeO₂†

Iddrisu Bachokun Abdul Razak,‡^ab Dhilip Kanna Ashok Kumar,

‡^a Bomin Li,^a Emma Anne Lynch,^a Dennis Brown^b and Yingwen Cheng

*^a

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* Corresponding authors

^a Department of Chemistry, University of Tennessee Knoxville, Knoxville, TN 37996, USA
E-mail: ycheng@utk.edu

^b Department of Physics, Northern Illinois University, DeKalb, IL 60115, USA

Abstract

The development of Fe-based materials for energy storage is hindered by difficulties in understanding Fe-ion redox. Here we demonstrate in situ Mössbauer spectroscopy to monitor the dynamics of Fe⁴⁺ in charged NaFeO₂ without disassembling the cell. This allows direct confirmation that a fluoroethylene carbonate (FEC) additive stabilizes the otherwise rapidly degrading Fe⁴⁺.

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Article information

DOI: https://doi.org/10.1039/D5CC00450K
Article type: Communication
Submitted: 23 ghje 2025
Accepted: 22 apri 2025
First published: 23 apri 2025

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Chem. Commun., 2025, Advance Article

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In situ Mössbauer spectroscopy confirms that fluoroethylene carbonate stabilizes Fe⁴⁺ in charged NaFeO₂

I. B. Abdul Razak, D. K. Ashok Kumar, B. Li, E. A. Lynch, D. Brown and Y. Cheng, Chem. Commun., 2025, Advance Article , DOI: 10.1039/D5CC00450K

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