FeS2-Decorated Carbon NanoFiber as Solid Phase Conversion-Type Cathode for Li-S Batteries

Jordi Jacas Biendicho^a, Pedro Mazaira^a, Hemesh Avireddy^a, Chaoqi Zhang^a^,^b, Pengyi Tang^a^,^b, Alexander Missyul^c, Lluis Trilla^a, Jordi Arbiol^b^,^d, Joan Ramon Morante^a^,^e, Andreu Cabot^a^,^d

^aCatalonia Institute for Energy Research (IREC), Sant Adrià de Besos, 08930, Barcelona, Spain.

^bCatalan Institute of Nanoscience and Nanotechnology (ICN2), ES

^cALBA Sycnhrotron Light Source - Consortium for the Construction, Equipment and Exploitation of the Synchrotron Light Laboratory (ALBA-CELLS), Carrer de la Llum 2-26, Cerdanyola del Vallès, Spain

^dICREA (Institució Catalana de Recerca i Estudis Avançats), 08010 Barcelona, Spain

^eDepartment of Electronics, Faculty of Physics, University of Barcelona, Marti i Franquès,1. Barcelona 08028, Spain

Materials for Sustainable Development Conference (MATSUS)
Proceedings of MATSUS Spring 2024 Conference (MATSUS24)

#BATS - Toward sustainable batteries based on sulfur cathodes

Barcelona, Spain, 2024 March 4th - 8th

Organizers: Andreu Cabot, Pascale Chenevier and Alessandra Manzini

Invited Speaker, Jordi Jacas Biendicho, presentation 071
DOI: https://doi.org/10.29363/nanoge.matsus.2024.071
Publication date: 18th December 2023

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.

References:

[1] Jacas Biendicho J., Energies 2023, 16(11), 4496

Acknowledgements:

The authors acknowledge [MDPI1] [JJ2] funding from Generalitat de Catalunya 2021 SGR 01581 and 2021 SGR 00457, the Spanish MINECO project ENE2017-85087-C3. IREC and ICN2 are funded by the CERCA Programme/Generalitat de Catalunya. The authors thank the support from the project NANOGEN (PID2020-116093RB-C43), funded by MCIN/AEI/10.13039/501100011033/ and by “ERDF A way of making Europe”, by the “European Union”. MCIN supported this study with funding from the European Union NextGenerationEU (PRTR-C17.I1) and Generalitat de Catalunya. ICN2 is supported by the Severo Ochoa program from Spanish MCIN/AEIN (Grant No.: CEX2021-001214-S). IREC acknowledges additional support from the European Regional Development Funds (ERDF, FEDER). Jordi Jacas Biendicho acknowledges the fellowship RYC2021-034994-I, funded by MCIN/AEI/10.13039/501100011033 and the European Union «NextGenerationEU»/PRTR». In-situ diffraction measurement experiments were performed at BL04-MSPD beamline at ALBA Synchrotron with the collaboration of ALBA staff under proposal number 2016091931.

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