| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| Hydrothermal Synthesis of Ti3C2@VS2/S Composite Cathode for Magnesium-Sulfur Batteries |
| GE Jiayin†, KOU Zhunsheng†, YAN Xiaoyan*, ZHANG Xiaohua, ZHAO Xinxin, GUO Jin
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| School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China |
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Abstract In response to the growing demand for sustainable energy sources, magnesium-sulfur batteries(MSBs), as a novel high-energy storage system, have garnered significant attention. In this work, a Ti3C2@VS2/S composite material was successfully synthesized via a hydrothermal method and employed as the cathode material for MSBs. The performance of this composite was systematically evaluated using various electrochemical testing methods. The electrochemical test results demonstrated that the Ti3C2@VS2/S-2 cathode exhibits excellent capacity retention capabilities under different current rates. Specifically, at current densities of 0.1C, 0.2C, 0.5C, 1C, 2C, and 5C, the initial specific discharge capacities were 1 246.3 mAh·g-1, 1 094.1 mAh·g-1, 978.1 mAh·g-1, 844.2 mAh·g-1, 568.3 mAh·g-1, and 289.6 mAh·g-1, respectively. Notably, when the current rate was restored to 0.1C, the specific discharge capacity remained stable at 1 175.2 mAh·g-1, achieving a capacity retention rate of 76.3%. Additionally, the capacity decay rate during the cycling process was remarkably low, at only 0.21%. The fin-dings of this work provide crucial experimental evidence for the optimization of the interfacial properties and enhancement of the kinetic perfor-mance of cathode materials in MSBs, paving the way for the development of more efficient and stable MSBs systems.
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Published: 25 February 2026
Online: 2026-02-13
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