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Abstract | Cited by

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+.

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

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