Lithium-based semi-solid flow battery (LSSFB) is expected to be applied in the field of large-scale energy storage. However, the rate performance of LSSFBs is unsatisfied due to the poor conductivity of active materials and the unstable contact with conductive additives. Herein, carbon coated MnO quantum dots derived from MIL-100 (Mn) were prepared. Such MnO quantum dots and carbon framework composite can not only increase the reactive active sites of MnO, but also avoid their agglomeration in the lithiation/delithiation process. Furthermore, the carbon framework and multi-walled carbon nanotubes (MWCNTs) are conducive to the rapid transport of electrons and can inhibit the volume expansion of MnO, achieving the high-rate performance and long cycling life. Moreover, MWCNTs can increase the suspension of the material and ensure the long-term stability of the slurry. These advantages endow the LSSFBs with high rate and long cycling performance. This work provides a promising strategy for the preparation of high-rate slurry electrode materials.

中文翻译：

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用于高倍率锂基半固态流动电池的金属有机框架衍生的MnO@C/CNTs复合材料

锂基半固态液流电池（LSSFB）有望在大规模储能领域得到应用。然而，由于活性材料的导电性差以及与导电添加剂的接触不稳定，LSSFB的倍率性能并不理想。在此，制备了源自 MIL-100 (Mn) 的碳涂覆的 MnO 量子点。这种MnO量子点和碳骨架复合材料不仅可以增加MnO的反应活性位点，而且可以避免它们在锂化/脱锂过程中发生团聚。此外，碳骨架和多壁碳纳米管（MWCNT）有利于电子的快速传输，并可以抑制MnO的体积膨胀，实现高倍率性能和长循环寿命。而且，MWCNTs可以增加材料的悬浮性，保证浆料的长期稳定性。这些优点赋予LSSFB高倍率和长循环性能。这项工作为制备高倍率浆料电极材料提供了一种有前景的策略。