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证明MAX相作为三重功能的人工固体电解质间相,用于超长寿命的金属阳极

Yiran Xu¹, Yuxi Song¹, ZhiLi Chen¹

¹School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, China.

Journal of colloid and interface science

|October 11, 2024

概括

传统的固体电解质介相 (SEI) 努力防止树突. 这项研究介绍了MAX相作为稳定的金属阳极的三重功能人工SEI (ASEI),实现超长的循环寿命.

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
纳米技术纳米技术

背景情况:

固体电解质介相 (SEI) 对于控制金属阳极中的 () 树突至关重要.
传统的SEI层缺乏用于持续的树抑制所需的化学稳定性,机械强度和自我完善,从而限制了电池的寿命.

研究的目的:

引入MAX相 (Ti2SnC和Ti2SC) 作为金属阳极的三重功能人工SEI (ASEI).
通过解决SEI限制,提高金属电池的稳定性和循环寿命.

主要方法:

MAX相 (Ti2SnC和Ti2SC) 被应用于金属上作为人工SEI层.
在各种条件下,使用Li金属对称细胞和LiFePO4 (LFP) 全细胞评估了电化学性能.

主要成果:

MAX阶段ASEI表现出高模量,化学稳定性和自我光滑性质.
在半电池中,Ti2SnC@Li电极展示了超长周期性能 (5000小时).
Ti2SnC@Li धूप धूपLFP全细胞在5C温度下表现出高达3000个周期的显著稳定性,并在恶劣条件下保持容量.

结论:

MAX相作为有效的三重功能ASEI,用于保护Li金属阳极.
开发的ASEI显著改善了金属电池的循环寿命和稳定性.
这种方法为先进的储能设备提供了一个有前途的战略.

关键词:

化学稳定性化学稳定性金属阳极是一种金属阳极.这是MAX阶段的MAX阶段.具有自我平滑能力的能力.人工SEI是一种人工SEI.

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