在石榴氧化物电解质中通过一层银介层提高了临界电流密度.
Ran Wei1, Yue Zhang1, Jiameng Yu1
1School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China.
ACS applied materials & interfaces
|October 3, 2024
概括
这项研究引入了一种富含银的中间层,用于添加氧化 (LLZTO) 固体电解质,有效抑制固态电池中的树石的生长,并提高性能.
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
- 固态化学 固态化学
背景情况:
- 陶化Li6.4La3Zr1.4Ta0.6O12 (LLZTO) 是固态电池的一个有前途的固体电解质.
- 树状石的形成仍然是一个重大挑战,限制了LLZTO电解质的实际应用.
研究的目的:
- 为了设计一个修改后的LLZTO陶,其中有一个中间层,以减轻树的生长.
- 为了提高金属电池的电化学性能和安全性.
主要方法:
- 通过一步烧结,用混合密集层的银 (Ag) 和LLZTO制造LLZTO陶.
- 电化学测试用于评估临界电流密度和循环稳定性.
主要成果:
- 富含Ag的中间层有效地阻碍了树的生长和透.
- 与没有Ag的LLZTO相比,实现了更高的临界电流密度 (0.6mA cm-2).
- 在电流密度为0.2 mA cm−2.2 的情况下,证明寿命更长.
结论:
- 开发的Ag-LLZTO介层策略有效地提高了基于石榴石的固体电解质的性能.
- 这种方法为推进高速金属电池提供了一个有希望的途径.
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