Revealing the hidden electrochemical pathway for cathode electrolyte interface formation in lithium–sulfur batteries with carbonate-based electrolytes

García-Soriano, Francisco J. (avtor), Genorio, Boštjan (avtor), Vižintin, Alen (avtor)

This study investigates the role of microporous carbons and carbonate-based electrolytes in addressing challenges related to polysulfides dissolution and electrolyte compatibility in lithium−sulfur (Li−S) batteries. By employing microporous carbons and varying the sulfur content, we investigate the formation of the cathode-electrolyte interphase (CEI) during the first discharge process. We propose an electrochemical nucleophilic mechanism for the formation of the CEI involving polysulfides and solvent molecules in the confined small pores of the cathode. This interphase, primarily composed of LiF, effectively seals the carbon pores, preventing further solvent intrusion and stabilizing the system. Furthermore, it allows the use of wider pores without compromising the system. Our findings reveal that an increased sulfur content within the micropores enhances cycling stability, contradicting trends observed in ether-based systems. These insights highlight the potential of designing Li−S systems with optimized pore structures and electrolyte compositions to achieve greater stability and capacity retention, marking a significant step forward in the development of practical Li−S batteries.

• Jezik: Angleški jezik
• Ključne besede: lithium−sulfur batteries, cathode-electrolyte interphase, microporous carbon, carbonate-based electrolytes, polysulfides, batteries, electrodes, electrolytes, porosity, sulfur
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FKKT - Fakulteta za kemijo in kemijsko tehnologijo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2026
• Št. strani: Str. 211-221
• Številčenje: Vol. 9, iss. 1
• PID: 20.500.12556/RUL-179021
• UDK: 66
• ISSN pri članku: 2574-0962
• DOI: 10.1021/acsaem.5c02970
• COBISS.SI-ID: 266744067
• Datum objave v RUL: 03.02.2026

Gradivo je del revije

• Naslov: ACS applied energy materials
• Skrajšan naslov: ACS app. energy mater.
• Založnik: American Chemical Society
• ISSN: 2574-0962
• COBISS.SI-ID: 39550725

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: kemijska tehnologija, materiali, litij-žveplove baterije, ogljik