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Título: | FeS2-Decorated Carbon NanoFiber as Solid Phase Conversion-Type Cathode for Li-S Batteries |
Autor: | Jacas Biendicho, Jordi; Mazaira, Pedro; Avireddy, Hemesh; Zhang, Chaoqi; Tang, Peng-Yi CSIC ORCID; Missyul, Alexander; Trilla, Lluis; Arbiol, Jordi CSIC ORCID CVN; Morante, Joan Ramón CSIC ORCID; Cabot, Andreu | Palabras clave: | Cathode FeS 2 In-situ battery measurements Li-S battery Synchrotron X-ray diffraction |
Fecha de publicación: | 2-jun-2023 | Editor: | Multidisciplinary Digital Publishing Institute | Citación: | Energies 16(11): 4496 (2023) | Resumen: | A new cathode material, FeS2-decorated carbon nanofiber (CNF), is proposed for Li-S batteries. The structure and physicochemical properties of the material have been engineered to enhance the poor cycling stability typically displayed by sulfur composites. The composite material shows a complex architecture with a matrix of CNF hosting the sulfur and core-shell FeS2 nanoparticles acting as a catalyst for a solid phase conversion-type reaction. This cathode delivers high discharge capacities of 864, 798, 689, 595 and 455 mAhg−1 at C/10, C/5, C/2, 1C and 2C, respectively, with a stable capacity retention of 87% at 2C after 300 cycles. FeS2-decorated CNF has been characterised using several techniques, including in-situ battery measurements at the ALBA synchrotron facility and high-throughput microscopy, giving valuable insights into its charge/discharge reaction mechanism. The excellent performance obtained is combined with the use of just low-cost and abundant elements such as iron, sulfur and carbon, which makes this battery highly promising for the next generation of electrochemical energy storage devices. | Versión del editor: | https://doi.org/10.3390/en16114496 | URI: | http://hdl.handle.net/10261/336801 | DOI: | 10.3390/en16114496 | E-ISSN: | 1996-1073 |
Aparece en las colecciones: | (CIN2) Artículos |
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FeS2-Decorated_Jacas.pdf | 4,34 MB | Adobe PDF | Visualizar/Abrir |
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