大规模制造灵活,超薄,坚固的固体电解质用于固态硫电池
Lu Nie1, Jinling Zhu2, Xiaoyan Wu2
1Tsinghua-Berkeley Shenzhen Institute and Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, P. R. China.
Advanced materials (Deerfield Beach, Fla.)
|May 16, 2024
概括
研究人员开发了一种新的制造方法,用于使用电气吹的固态电解质. 这种技术提高了全固态金属电池的机械强度和电化学稳定性,从而实现更安全和更高的能量密度.
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:
- 全固态金属电池 (ASSLMB) 对于下一代高安全性储能至关重要.
- 达到高能量密度需要轻质,薄型固态电解质 (SSEs),具有优越的电化学稳定性.
研究的目的:
- 提出一个可行和可扩展的制造方法,用于SSEs使用电气吹.
- 为ASSLMBs提高SSE的机械强度和电化学性能.
主要方法:
- 通过电气吹来制造SSE的3D支骨架.
- 描述SSE的机械性能,离子传输和界面稳定性.
- 测试Li对称细胞和全细胞的循环性能.
主要成果:
- 三维骨架提高了机械强度,并阻碍了离子迁移,增加了离子转移数.
- 均的离子流量和电流密度分布促进了均的沉积.
- 稳定的SSE-Li阳极接口由一个富含F的固体电解质相间层形成.
- 对称细胞显示出出色的涂/剥离可逆性.
- 经过350个循环后,LiidiyeSPAN电池保持了94.0%的容量;经过500个循环后,LiidiyeLCO电池保持了92.4%的容量.
结论:
- 电吹技术提供了一个可扩展的方法,用于生产坚固和薄的SSEs.
- 这种方法适用于大规模生产高能量密度和高安全性的ASSLMB.
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