在碳酸盐基电解质中对p块进行in situ保护层涂层,使无阳极电池的稳定细胞循环成为可能
Jie Shi1, Toshinari Koketsu1,2, Zhenglu Zhu1
1Shanghai Key Laboratory for R&D and Application of Metallic Functional Materials, Institute of New Energy for Vehicles, School of Materials Science and Engineering, Tongji University, Shanghai, China.
Nature materials
|September 2, 2024
概括
碳酸盐电解质中的添加剂通过形成保护层来增强无阳极金属电池,改善涂层和循环稳定性,以获得更高的能量密度. 这一战略显示出广泛的适用性.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 储能 储能 储能 储能 储能 储能
背景情况:
- 无阳极的金属电池具有高能量密度,但碳酸盐电解质的库伦比效率较低.
- 这种限制阻碍了它们在先进的储能系统中的实际应用.
研究的目的:
- 为了提高无阳极金属电池的性能.
- 通过添加剂策略提高库伦比效率和循环稳定性.
主要方法:
- 在碳酸电解质中加入p-块八酸盐作为添加剂.
- 对铜基板上保护层形成的分析.
- 无阳极金属袋式电池的电化学循环和性能评估.
主要成果:
- 锡酸在铜基板上的优选吸附形成了一个碳酸盐少的保护层,抑制了副作用反应并促进了统一的涂层.
- 在现场形成稳定的石性Cu6Sn5合金和Sn层增强了的亲和力.
- 没有阳极的金属袋式电池实现了高循环稳定性,其库伦比效率为~99.1%.
结论:
- 该p-块锡八酸盐添加剂策略有效地提高了无阳极金属电池的性能.
- 在现场的p块层涂层方法证明了普遍性,适用于其他p块金属八酸和金属电池.
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