阻燃硫阴极复合材料用于防火和稳定的硫电池
Ping Lu1, Han-Bing Chen1, Fang-Lei Zeng1
1School of Material Science and Engineering, Jiangsu Collaborative Innovation Center for Photovoltaic Science and Engineering, Jiangsu Province Cultivation Base for State Key Laboratory of Photovoltaic Science and Technology, Changzhou University, Changzhou 213164, China.
ACS applied materials & interfaces
|February 3, 2026
概括
这项研究开发了一种阻燃-硫 (Li-S) 电池阴极,使用碳-硫复合材料与氧化和聚酸盐. 这提高了安全性和稳定性,解决了下一代能源存储的关键局限性.
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 (Li-S) 电池提供高能量密度,但面临着诸如循环稳定性差,体积膨胀和硫易燃性等挑战.
- 可溶性多硫化物 (LiPS) 和绝缘中间体导致容量衰减,阻碍了Li-S电池的应用.
- 目前的Li-S电池技术需要提高安全性和耐久性,以便广泛采用.
研究的目的:
- 设计和开发一种阻燃硫阴极,以提高Li-S电池的性能和安全性.
- 为了解决LiPS的转运,体积膨胀和固有的硫易燃性的局限性.
- 创建一个稳定的电极结构,改善硫氧化还原动力学.
主要方法:
- 碳硫复合材料与氧化 (Al(OH) 3) 的封装.
- 使用聚酸盐 (APP) 作为阻燃剂和电极稳定剂的粘合剂.
- 电化学测试用于评估容量保留,循环稳定性和速率性能.
主要成果:
- CS@Al/APP阴极通过惰性气体释放和炭层形成,证明了协同的阻燃性.
- (OH) 3和APP有效地捕获了LiPS,增强了硫氧化还原动力学和电极稳定性.
- 实现了特殊的电化学稳定性,可逆容量为1025.04mAhg-1在0.1C的100个循环后,744.2mAhg-1在1C的500个循环后.
结论:
- 开发的CS@Al/APP阴极为提高Li-S电池的安全性和能量密度提供了可行的解决方案.
- (OH) 3和APP的组合提供了阻燃性和提高电化学性能的双重好处.
- 这项研究为高性能,安全的Li-S电池的实际应用铺平了道路.
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