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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Armstrong, Anthony Robert
University of St Andrews
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (6/6 displayed)
- 2023K2Fe(C2O4)2citations
- 2023Manipulating O3/P2 phase ratio in bi-phasic sodium layered oxides via ionic radius controlcitations
- 2022Importance of superstructure in stabilizing oxygen redox in P3- Na0.67Li0.2Mn0.8O2citations
- 2020Vacancy enhanced oxygen redox reversibility in P3-type magnesium doped sodium manganese oxide Na0.67Mg0.2Mn0.8O2citations
- 2014Lithium-ion diffusion mechanisms in the battery anode material Li1+xV1-xO2citations
- 2014Polymorphism in Li2MSiO4 ( M = Fe, Mn)citations
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article
K2Fe(C2O4)2
Abstract
The development of multielectron redox-active cathode materials is a top priority for achieving high energy density with long cycle life in the next-generation secondary battery applications. Triggering anion redox activity is regarded as a promising strategy to enhance the energy density of polyanionic cathodes for Li/Na-ion batteries. Herein, K<sub>2</sub>Fe(C<sub>2</sub>O<sub>4</sub>)<sub>2</sub> is shown to be a promising new cathode material that combines metal redox activity with oxalate anion (C<sub>2</sub>O<sub>4</sub><sup>2–</sup>) redox. This compound reveals specific discharge capacities of 116 and 60 mAh g<sup>–1</sup> for sodium-ion batterie (NIB) and lithium-ion batterie (LIB) cathode applications, respectively, at a rate of 10 mA g<sup>–1</sup>, with excellent cycling stability. The experimental results are complemented by density functional theory (DFT) calculations of the average atomic charges.