-Sb合金形成策略,以提高全固态电池的界面稳定性
Berhanu Degagsa Dandena1,2, Wei-Nien Su2,3, Dah-Shyang Tsai1
1Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, 106, Taiwan.
Small methods
|October 5, 2024
概括
将 (Sb) 纳入 argyrodite 固体电解质 (LPSC-P) 中,形成一个 Li-Sb 合金. 这种合金增强了接口的稳定性,并使沉积均,防止固态电池中的树岩形成.
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
- 固态电池 固态电池是什么
背景情况:
- 固体电解质的目的是防止电池中的树生长.
- 接口反应和金属沉积仍然是固态电池的挑战.
研究的目的:
- 研究一种合金形成策略,以提高固态电池的接口稳定性.
- 通过加入反 (Sb) 来提高 argyrodite固体电解质 (LPSC-P) 的性能.
主要方法:
- 将 (Sb) 纳入Li6PS5Cl (LPSC-P) 中,形成一个Li-Sb合金.
- 使用X射线衍射 (XRD),拉曼光谱和X射线光电子光谱 (XPS) 进行Li-Sb合金形成的表征.
- 评估电化学性能,包括临界电流密度和循环稳定性.
主要成果:
- 在阳极接口上证实了Li-Sb合金的形成.
- -Sb合金促进了的均沉积,并在涂层/脱落过程中保持了接口接触.
- 在报告的硫化物固体电解质中达到最高的临界电流密度14.5 mA cm−2,没有状透.
- 证明了出色的长期稳定性.
结论:
- 使用反的合金形成策略有效地提高了固态电池的接口稳定性.
- -Sb合金促进了均的沉积,并防止了树岩的形成.
- 这种方法对开发具有更高安全性和性能的先进固态电池具有重大前景.
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