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- Title
Synthesis and Electrochemistry of Na<sub>2.5</sub>(Fe<sub>1− y</sub>Mn<sub> y</sub>)<sub>1.75</sub>(SO<sub>4</sub>)<sub>3</sub> Solid Solutions for Na-Ion Batteries.
- Authors
Wei, Suhao; Mortemard de Boisse, Benoit; Oyama, Gyosuke; Nishimura, Shin‐ichi; Yamada, Atsuo
- Abstract
Na2+2 xFe2− x(SO4)3 was recently reported as a promising cathode material for Na-ion batteries with high voltage generation (3.8 V vs. Na/Na+), high energy density, and extreme high-rate operation, making it competitive to lithium battery cathodes. Following our identification of the narrow off-stoichiometric region in Na2+2 xFe2− x(SO4)3 solid solutions ( x around 0.25), we report here the effect of Mn substitution in Na2.5(Fe1− yMn y)1.75(SO4)3 ( y=0, 0.25, 0.5, 0.75, and 1.0) solid solutions when increasing the voltage of the Fe3+/Fe2+ redox couple, but with a simple capacity decrease, owing to the entire Mn2+ inactivity.
- Subjects
LITHIUM cells; SODIUM ions; SOLID solutions; ELECTROCHEMISTRY; CHEMICAL synthesis; PHYSICAL &; theoretical chemistry
- Publication
ChemElectroChem, 2016, Vol 3, Issue 2, p209
- ISSN
2196-0216
- Publication type
Article
- DOI
10.1002/celc.201500455