Exploring Antiperovskite Cathodes for Na‐Ion Batteries
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Wiley
2026
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| author | Tian Dai Razan M. N. Ahmed Eira Tiberg North Martin Valldor Alexey Y. Koposov |
| author_facet | Tian Dai Razan M. N. Ahmed Eira Tiberg North Martin Valldor Alexey Y. Koposov Tian Dai Razan M. N. Ahmed Eira Tiberg North Martin Valldor Alexey Y. Koposov |
| collection | Wiley Open Access |
| contents | Exploring Antiperovskite Cathodes for Na‐Ion Batteries Tian Dai Razan M. N. Ahmed Eira Tiberg North Martin Valldor Alexey Y. Koposov ChemSusChem Recently discovered cathode materials with antiperovskite (AP) structure have shown a promising performance in Li‐ion batteries. However, their applicability in other battery chemistries have not been well explored. In this work, an AP‐based cathode material, Li 2 FeSeO, was systematically studied for application in Na‐ion batteries (NIBs). Delithiated Li 0.8 FeSeO was used as a precursor for preparing an Na‐ion analog. The electrochemical characterization of Na‐based AP cathode revealed a reversible galvanostatic cycling behavior with an initial capacity of 129 mA g −1 and a capacity retention of 57% after 200 cycles when cycled at a current density of 10 mA g −1 . Up to 0.75 Na + can be reversibly inserted into the AP framework. Synchrotron operando and ex situ X‐ray studies revealed a working mechanism based on a dual redox behavior including both Fe and Se, with Se being the main redox actor. The (de)sodiation capacity below expected value is possibly attributed to the formation of a core–shell structure formed due to kinetic limitation of Na + diffusion into bulk structure, thus preventing a full utilization of the available redox activity. These findings establish AP cathodes as viable candidates for NIBs and provide mechanistic insights that can guide their future structural optimization. 10.1002/cssc.70723 http://onlinelibrary.wiley.com/termsAndConditions#vor |
| doi_str_mv | 10.1002/cssc.70723 |
| format | Artículo Open Access |
| id | wiley_oa_10_1002_cssc_70723 |
| institution | Wiley Open Access |
| license_str_mv | http://onlinelibrary.wiley.com/termsAndConditions#vor |
| publishDate | 2026 |
| publisher | Wiley |
| record_format | wiley_oa |
| spellingShingle | Exploring Antiperovskite Cathodes for Na‐Ion Batteries Tian Dai Razan M. N. Ahmed Eira Tiberg North Martin Valldor Alexey Y. Koposov ChemSusChem Exploring Antiperovskite Cathodes for Na‐Ion Batteries Tian Dai Razan M. N. Ahmed Eira Tiberg North Martin Valldor Alexey Y. Koposov ChemSusChem Recently discovered cathode materials with antiperovskite (AP) structure have shown a promising performance in Li‐ion batteries. However, their applicability in other battery chemistries have not been well explored. In this work, an AP‐based cathode material, Li 2 FeSeO, was systematically studied for application in Na‐ion batteries (NIBs). Delithiated Li 0.8 FeSeO was used as a precursor for preparing an Na‐ion analog. The electrochemical characterization of Na‐based AP cathode revealed a reversible galvanostatic cycling behavior with an initial capacity of 129 mA g −1 and a capacity retention of 57% after 200 cycles when cycled at a current density of 10 mA g −1 . Up to 0.75 Na + can be reversibly inserted into the AP framework. Synchrotron operando and ex situ X‐ray studies revealed a working mechanism based on a dual redox behavior including both Fe and Se, with Se being the main redox actor. The (de)sodiation capacity below expected value is possibly attributed to the formation of a core–shell structure formed due to kinetic limitation of Na + diffusion into bulk structure, thus preventing a full utilization of the available redox activity. These findings establish AP cathodes as viable candidates for NIBs and provide mechanistic insights that can guide their future structural optimization. 10.1002/cssc.70723 http://onlinelibrary.wiley.com/termsAndConditions#vor |
| title | Exploring Antiperovskite Cathodes for Na‐Ion Batteries |
| topic | ChemSusChem |
| url | https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/cssc.70723 |