在现场设计一种由谷氨酸衍生的疏水层,用于耐用且不含树的 Zn 阳极
Mengxi Bai1, Qiufen Li1, Xiang Wang1
1Department of Materials Science and Engineering, College of Chemistry and Materials Science, Jinan University, Guangzhou 511443, PR China.
Journal of colloid and interface science
|March 27, 2025
概括
研究人员开发了一种谷氨 (GSH) 涂层,用于水性离子电池 (AZIB) 中的阳极. 这种接口工程防止了树的生长和腐蚀,使得稳定,长期的能源储存.
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:
- 水性离子电池 (AZIB) 提供安全,经济高效的大规模储能,但面临着树生长和副作用的挑战.
- 这些问题限制了AZIB的循环寿命和实际应用,需要提高阳极稳定性.
研究的目的:
- 通过界面工程来提高AZIB中的阳极的稳定性和可逆性.
- 为了研究谷氨 (GSH) 功能层对阳极性能的影响.
主要方法:
- 在阳极表面 (GSH@Zn) 涂上一个谷氨 (GSH) 功能层.
- 使用电化学技术研究了GSH层对阳极腐蚀,沉积行为和界面特性的影响.
- 组装并测试使用GSH@Zn阳极和基于的阴极的全电池.
主要成果:
- 该GSH层有效地减轻了Zn阳极腐蚀,并促进了均的Zn沉积,防止了树岩的形成.
- 在 Zn 阳极上对原生氧化物的 GSH 蚀刻增加了电化学活性面积,并降低了界面阻抗,增强了反应动力学.
- 该GSH@Zn阳极在1 mA cm-2下进行了4500小时的无树脂涂层/脱落,显著优于裸体Zn阳极.
- 完整电池表现出极好的循环稳定性 (在2000个循环后保持86%的容量) 和速率能力 (60%的容量在4Ag-1时).
结论:
- 使用GSH层的接口工程是一种可行的策略,可以提高AZIB中的Zn阳极的稳定性和可逆性.
- 开发的GSH@Zn阳极显示出对耐用性和高性能水性能量存储系统的巨大希望.
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