Herein, we demonstrate a synergistic approach involving polar-based oxide and polysulfide additives for effectively suppressing polysulfide dissolution during cycling. The MnO₂ hollow spheres not only provide physical confinement for the polysulfide species but also enable strong chemical interactions between polysulfide species and oxides, while the added polysulfide furnishes a mass buffering effect and compensates for the capacity losses due to partial cathode dissolution during discharge. The capacity retentions of S/KB, S/KB/LiPS, S/KB/MnO₂, and S/KB/MnO₂/LiPS composite cathodes are 31%, 45%, 59%, and 91% respectively. The remarkable capacity retention of the S/KB/LiPS/MnO₂ composite electrode is mainly attributed to the synergistic effect between MnO₂ and polysulfide additives.

中文翻译：

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揭示了多硫化物添加剂和MnO ₂空心球在发展Li–S电池的稳定循环性能方面的协同作用

在这里，我们展示了一种基于极性的氧化物和多硫化物添加剂的协同方法，可有效抑制循环过程中多硫化物的溶解。MnO ₂空心球不仅为多硫化物物种提供了物理限制，而且还使多硫化物物种与氧化物之间实现了强大的化学相互作用，而添加的多硫化物则提供了质量缓冲作用，并补偿了由于放电过程中阴极部分溶解而导致的容量损失。S / KB，S / KB / LiPS，S / KB / MnO ₂和S / KB / MnO ₂ / LiPS复合阴极的容量保持率分别为31％，45％，59％和91％。S / KB / LiPS / MnO ₂的出色容量保持能力复合电极主要归因于MnO ₂与多硫化物添加剂的协同作用。