Optimizing reduced graphene oxide/MXene composites as sulfur hosts for lithium-sulfur batteries: A systematic investigation
Kenzhebek M. Mentbayeva A. Supiyeva Z. Kabyshev A. Sultanov F.
1 October 2025Elsevier B.V.
Materials Letters
2025#396
Large volume changes, the insulating nature of sulfur, and the lithium polysulfides (LiPSs) shuttle effect significantly hinder the practical application of lithium-sulfur (Li-S) batteries. In this study, reduced graphene oxide/MXene (rGO/MXene) composites were investigated as potential sulfur host materials. Since the rGO-to-MXene ratio influences electrical conductivity, LiPSs confinement, and structural stability, MXene contents of 10 wt%, 20 wt%, and 30 wt% were systematically evaluated. The (rGO/MXene10)_S60 electrode exhibited the most promising performance, delivering an initial discharge capacity of 981 mAh/g and retaining 606 mAh/g after 100 cycles with Coulombic efficiency (CE) above 97 %. These results demonstrate that a 9:1 rGO-to-MXene ratio optimally enhances conductivity, structural stability, and LiPSs anchoring, making it a promising sulfur host for Li-S batteries.
Composite materials , Li-S battery , Lithium polysulfides , MXene , rGO
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National Laboratory Astana, Nazarbayev University, Kabanbay Batyr Ave. 53, Astana, 010000, Kazakhstan
International Department of Nuclear Physics, New Materials and Technologies, L.N. Gumilyov, Eurasian National University, Satpayev 2, Astana, 010000, Kazakhstan
School of Engineering and Digital Sciences, Nazarbayev University, Kabanbay Batyr Ave. 53, Astana, 010000, Kazakhstan
Satbayev University, Almaty, 050013, Kazakhstan
National Laboratory Astana
International Department of Nuclear Physics
School of Engineering and Digital Sciences
Satbayev University
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