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双层梯度涂层的创新设计,用于无树和超稳定的阳极

Wanting Li¹, Liansheng Li², Xiangxiang Fu¹

¹Guangdong Provincial Key Laboratory of Fuel Cell Technology, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, Guangdong, 510640, P. R. China.

Small (Weinheim an der Bergstrasse, Germany)

|February 14, 2025

概括

阳极的新双层涂层可以防止可充电电池中的树突和腐蚀. 这项创新通过改善沉积和减少副作用来提高电池寿命和性能.

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:

可充电的水性离子电池面临着由树突成长,演化反应 (HER) 和自我腐蚀带来的挑战.
这些问题限制了电池的寿命和性能,阻碍了广泛采用.

研究的目的:

为阳极开发一种新的接口策略,以抑制树突形成和副作用.
提高水性离子电池的电化学性能和稳定性.

主要方法:

在阳极表面制造双层梯度涂层 (OSA/PAM@Sn).
涂层结构和电化学性能的表征.
测试对称电池和充电电池 (MnO2红色电池Zn阳极) 的性能评估.

主要成果:

这种OSA/PAM@Sn涂层有效地抑制了树突的生长,HER和Zn的自我腐蚀.
这种涂层促进了的均沉积,并具有较低的超电位.
对称细胞的寿命延长 (>5000小时在1 mA cm-2和>1200小时在5 mA cm-2).
充满电池表现出更好的速度能力和周期稳定性.

结论:

双层梯度涂层的协同效应对于实现无树和无副作用的阳极至关重要.
这种接口工程方法为推进可充电水性离子电池提供了一个有希望的战略.

关键词:

Zn金属阳极是一种金属阳极.双层梯度涂层是一种双层梯度涂层.接口设计的设计.有协同效应的效应.

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