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F₂纳米颗粒使LiF占主导地位的固体电解质接相能够用于无树和超稳定的金属电池

Quan Zheng¹, Zhiyi Zhao¹, Guohao Zhao¹

¹School of Materials and Energy, Lanzhou University, Lanzhou 730000, China.

Journal of colloid and interface science

|July 25, 2024

概括

这项研究开发了一种使用CaF2纳米颗粒的保护性LiF主导的固体电解质介相,以防止金属电池中的树脂生长和接口反应.

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:

金属电池面临着树生长和界面反应的挑战,阻碍了它们的实际使用.
人工固体电解质间相对于调节沉积和防止副作用至关重要.

研究的目的:

设计和实施一个统一的 LiF 主导的固体电解质介相.
为了提高金属阳极的稳定性和安全性.

主要方法:

在CaF2纳米粒子和阳极之间的现场反应形成了富含LiF的固体电解质介相.
制造受保护的电极.
对称细胞和LiFePO4//Li细胞的测试.

主要成果:

实现了无树的沉积.
证明了特殊的电极稳定性,在对称细胞中在2 mA cm-2下存活超过6000小时.
在LiFePO4//Li电池中达到1000多个周期,每周期的低容量衰变率为0.015%.

结论:

由LiF主导的固体电解质介相有效抑制树突和接口恶化.
这种保护策略显著提高了金属电池的循环稳定性和寿命.

关键词:

在CaF(2) 纳米粒子中.没有树的矿沉积.在 LiF 主导的固体电解质相间阶段.金属电池金属电池的使用方法

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