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| Pàgina inicial > Articles > Articles publicats > FeS2-Decorated Carbon NanoFiber as Solid Phase Conversion-Type Cathode for Li-S Batteries |
| Data: | 2023 |
| Resum: | A new cathode material, FeS-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 FeS 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 at C/10, C/5, C/2, 1C and 2C, respectively, with a stable capacity retention of 87% at 2C after 300 cycles. FeS-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. |
| Ajuts: | Agencia Estatal de Investigación PID2020-116093RB-C43 Ministerio de Ciencia e Innovación CEX2021-001214-S Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-00457 Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-01581 Ministerio de Ciencia e Innovación RYC2021-034994-I Agencia Estatal de Investigación ENE2017-85087-C3 |
| Drets: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. |
| Llengua: | Anglès |
| Document: | Article ; recerca ; Versió publicada |
| Publicat a: | Energies, Vol. 16, Issue 11 (June 2023) , art. 4496, ISSN 1996-1073 |
12 p, 4.2 MB |