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Microporous sulfur–carbon materials with extended sodium storage window

MPG-Autoren
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Eren,  Enis       
Paolo Giusto, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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Esen,  Cansu       
Baris Kumru, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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Scoppola,  Ernesto       
Wolfgang Wagermaier, Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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Song,  Zihan
Paolo Giusto, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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Senokos,  Evgeny
Paolo Giusto, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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Zschiesche,  Hannes
Nadezda V. Tarakina, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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Tarakina,  Nadezda V.       
Nadezda V. Tarakina, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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Kumru,  Baris
Baris Kumru, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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Antonietti,  Markus       
Markus Antonietti, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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Giusto,  Paolo       
Paolo Giusto, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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Zitation

Eren, E., Esen, C., Scoppola, E., Song, Z., Senokos, E., Zschiesche, H., et al. (2024). Microporous sulfur–carbon materials with extended sodium storage window. Advanced Science, 2310196. doi:10.1002/advs.202310196.


Zitierlink: https://hdl.handle.net/21.11116/0000-000E-6991-8
Zusammenfassung
Developing high-performance carbonaceous anode materials for sodium-ion batteries (SIBs) is still a grand quest for a more sustainable future of energy storage. Introducing sulfur within a carbon framework is one of the most promising attempts toward the development of highly efficient anode materials. Herein, a microporous sulfur-rich carbon anode obtained from a liquid sulfur-containing oligomer is introduced. The sodium storage mechanism shifts from surface-controlled to diffusion-controlled at higher synthesis temperatures. The different storage mechanisms and electrode performances are found to be independent of the bare electrode material's interplanar spacing. Therefore, these differences are attributed to an increased microporosity and a thiophene-rich chemical environment. The combination of these properties enables extending the plateau region to higher potential and achieving reversible overpotential sodium storage. Moreover, in-operando small-angle X-ray scattering (SAXS) reveals reversible electron density variations within the pore structure, in good agreement with the pore-filling sodium storage mechanism occurring in hard carbons (HCs). Eventually, the depicted framework will enable the design of high-performance anode materials for sodium-ion batteries with competitive energy density.