通过在TiVCrMoC3Tx接口上通过多个主动站点促进Li2S核/溶解动力学
Qiang Zou1, Qi Liang2,3, Henggang Zhou4
1School of Food and Biological Engineering, Chengdu University, Chengdu, 610106, P. R. China.
Small (Weinheim an der Bergstrasse, Germany)
|June 3, 2024
概括
在硫电池 (LSB) 中的高MXene合石墨烯抑制了多硫化物穿,并促进了均的沉积. 这项创新显著提高了先进的LSB的循环稳定性和能量密度.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 储能 储能 储能 储能 储能 储能
背景情况:
- 硫电池 (LSB) 面临着诸如聚硫化物穿和树脂等挑战,这限制了它们的实际应用.
- 高材料为先进的储能解决方案提供独特的特性.
研究的目的:
- 开发一种新型的高MXene (HE-MXene) 合石墨烯涂层,用于LSB中的商业分离器.
- 解决LSB的关键局限性,包括聚硫化物迁移和阳极不稳定性.
主要方法:
- 高性MXene (TiVCrMoC3Tx) 合石墨烯复合物的设计和合成 (HE-MXene/G).
- 应用HE-MXene/G复合物作为LSB的分离涂层.
- 在现场表征以分析电化学行为和材料相互作用.
主要成果:
- 该HE-MXene/G涂层有效吸附聚硫化物,并促进的均沉积.
- 带有修改分离器的LSB表现出高容量保留 (1C/2C时超过1000个周期) 与最小的衰变.
- 在低潜力和高电流密度下,以及高硫负载下,证明了特殊的长期稳定性.
结论:
- 高的MXene策略为克服LSB中的关键挑战提供了一个有希望的途径.
- 这种方法可以同时提高阴极和阳极性能,为商业上可行的LSB铺平道路.
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