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通过表面修饰剂水解,同时操纵直接核和进化的战略,用于高性能离子电池

Min Ji Yeo¹, Seul Gi Lee¹, Syryll Olidan¹

¹Division of Advanced Materials Engineering, Kongju National University, Chungnam 31080, Republic of Korea.

ACS applied materials & interfaces

|July 29, 2024

概括

使用硫乙胺 (TAA) 作为电解质添加剂开发出更安全的离子电池. TAA提高了沉积和稳定性,克服了腐蚀和树问题,用于实际应用.

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:

由于离子火灾风险,对更安全的电池的需求日益增加.
离子电池提供了一种更安全的,以水为基础的替代品,但面临着腐蚀和树问题.
目前的解决方案昂贵且耗时.

研究的目的:

开发一种具有成本效益的方法来提高离子电池的性能.
为了应对 Zn-金属阳极腐蚀和树突生长.
提高离子电池的可逆性和商业可行性.

主要方法:

使用乙胺衍生型硫乙胺 (TAA) 作为 Zn-电解质接口的表面修饰剂.
研究TAA水解产物 (酸性副产品,硫化离子) 和它们在表面的吸附.
评估TAA对沉积,界面层形成和水性电解质中的副作用的影响.
测试的对称细胞和ZnidiyeV₆O₁₃全细胞与TAA.

主要成果:

TAA诱导了均的Zn2+沉积,形成了一个稳定的界面层.
减少水的活动抑制了副作用,导致对称细胞的极化低 (50 mV).
在对称细胞中,在1 mA cm-2的 700 小时内实现了稳定的循环.
全电池显示出电化学可逆性,在300个周期内保持64%的容量.

结论:

TAA有效调节Zn电解质接口,提高电池性能.
该研究介绍了竞争性离子电池的简单制造工艺.
像TAA这样的功能性电解质添加剂对于实际的离子电池应用至关重要.

关键词:

在 Zn 阳极上,添加剂添加剂添加剂水解是指水解过程中的水解.硫酸乙胺的使用方法这是一种爱的爱分子.

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