无树和高速率金属电池由无机丰富的SEI维持
Xueyu Lian1, Zhijin Ju2, Lin Li3
1College of Energy, Soochow Institute for Energy and Materials Innovations, SUDA-BGI Collaborative Innovation Center, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou, 215006, P. R. China.
Advanced materials (Deerfield Beach, Fla.)
|November 2, 2023
概括
这项研究介绍了一种经过修改的电流收集器,可以防止金属电池中的树生长. 这一创新提高了未来储能应用的电池性能和安全性.
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:
- 金属电池对储能充满希望,但由于阳极树突的形成而受到影响.
- 树突导致不稳定的固体电解质介相 (SEI) 和不均的沉积.
研究的目的:
- 开发一个双修改的电流采集器,用于无树的阳极.
- 为了提高金属电池的可逆性和稳定性.
主要方法:
- 调节一个电流采集器的电子结构.
- 电子显微镜 (cryo-EM) 和X射线深度分析用于SEI分析.
- 用修改和标准电流采集器制造和测试金属电池.
主要成果:
- 实现了无树的阳极,具有稳定的,富含无机物SEI.
- 增强的离子导电性和均的沉积.
- 提高了速率能力 (400小时在50 mA cm−2) 和低温性能 (-50 °C).
结论:
- 经过修改的电流采集器使高性能,安全的金属电池成为可能.
- 可扩展的生产为可持续能源储存的成本降低提供了潜力.
- 双修改策略对于稳定金属阳极是有效的.
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