Manganese-doped iron sulfide nanoplatelets on carbon cloth: A negative electrode material for flexible and wearable supercapacitors

Date

2025-02-15

Author

Gözütok, Almila Nur
Durukan, Mete Batuhan
Kocak, Yusuf
Ozensoy, Emrah
Ünalan, Hüsnü Emrah
Nalbant Esentürk, Emren

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Herein, we report the direct growth of manganese-doped iron sulfide (pyrrhotite) nanoplatelets on the carbon cloth (CC) fibers by a one-step hydrothermal method without the need for organic binders. Manganese-doped iron sulfide nanoplatelets on CC (MFS-CC) revealed surface enrichment of polysulfide species over sulfites, exhibited a variety of Mn2+/3+/4+, Fe3+/4+ surface species as well as unique FexMnyOzSn surface domains resulting in a multitude of electroactive sites, enhancing ion transport and an exceptional electrochemical performance. As-prepared electrodes yielded a high specific capacitance of 206 F g−1 at a scan rate of 10 mVs−1. Moreover, once constructed, the electrodes were encapsulated with polyvinyl chloride (PVC) to ensure efficient operation for up to three months. As a result, the device demonstrated remarkable cyclic stability, enduring up to 11,000 cycles without degradation. Finally, the assembled electrodes were integrated to form an asymmetric wearable supercapacitor, and this device effectively illuminated a green light emitting diode (LED) integrated into a hoodie, showcasing its potential for powering wearable electronics.

Subject Keywords

Bimetallic sulfides, Flexible supercapacitors, Gel electrolyte, Negative electrode, Wearable supercapacitors

URI

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85213565089&origin=inward
https://hdl.handle.net/11511/113102

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Department of Metallurgical and Materials Engineering, Article