化胺-链接的高合聚合物,使稳定硫电池的共价聚硫化固定成为可能
Sattwick Haldar1, Arafat H Khan2, Ankita De1
1Chair of Inorganic Chemistry I, Technische Universität Dresden, 01069, Dresden, Germany.
Chemistry (Weinheim an der Bergstrasse, Germany)
|October 25, 2023
概括
研究人员开发了一种新型的硫化聚合物电极,可共结合多硫化物,克服金属硫电池中的溶解性问题. 这一创新提高了硫和硫储能系统的稳定性和效率.
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
- 聚合物化学 聚合物化学
背景情况:
- 硫为电池提供了高的理论容量,但由于电解质溶解度差而受到影响.
- 聚硫化物穿效应阻碍了传统金属硫电池的性能.
研究的目的:
- 通过共振整合硫,开发用于金属硫电池的稳定电极材料.
- 为了实现高效和可持续的硫 (Li-S) 和硫 (Al-S) 电池技术.
主要方法:
- 合成了一种化多孔聚合物,并通过核芳香替代 (SN Ar) 用元素硫处理.
- 聚硫化物被卷积集成到化聚合物骨干中,取代了原子.
- 使用硫化聚合物制造的电极用于Li-S和Al-S电池测试.
主要成果:
- 成功地将聚硫化物定在聚合物中,减轻了聚硫化物穿效应.
- 在Li-S和Al-S电池中表现出更好的循环稳定性和降低过量的潜力.
- 启用了一个可逆和更经济的Al-S电池,利用p-block元素.
结论:
- 新型硫化聚合物电极为先进的能源存储提供了一个有前途的解决方案.
- 这种方法有助于开发可持续的高性能电池.
- 该战略为未来基于丰富元素的储能解决方案铺平了道路.
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