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为可逆金属阳极提供电工艺氧终结性ZnCoAl-LDH功能层

Qiangchao Sun¹, Xinlin Peng¹, Xijun Liu¹

¹School of Materials Science and Engineering & State Key Laboratory of Advanced Refractories, Shanghai University, Shanghai, China.

Small (Weinheim an der Bergstrasse, Germany)

|March 12, 2026

概括

研究人员开发了一种无粘合剂的ZnCoAl层双氧化物中间层,为可充电的水性电池增添性氧基 (LDH-O@Zn). 这项创新防止了树突的生长,并提高了电池的寿命,用于电网规模的储能.

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:

可充电的水性基电池为电网规模的能源存储提供了安全和具有成本效益的解决方案.
树突生长和寄生虫反应是阻碍其实际应用的重大挑战.
现有的人工接口层 (AIL) 制造方法通常会由于粘合剂而引入阻抗.

研究的目的:

为水性电池中的阳极开发一种新型,无粘合剂的人工接口层 (AIL).
解决树突生长问题,提高阳极的循环稳定性和库伦比效率.
研究界面化学在指导均沉积中的作用.

主要方法:

采用综合电合成方法,在 Zn 阳极上构建了 ZnCoAl 层的双氧化物中间层,并将其与性氧基 (LDH-O@Zn) 丰富.
经过LDH-O@Zn修改的阳极在对称细胞和使用NaV3O8·nH2O阴极的全细胞中进行了测试.
评估了电化学性能,包括循环稳定性,库伦比克效率和容量保留.

主要成果:

无粘合剂的LDH-O@Zn层有效地抑制了树突的生长和腐蚀.
对称细胞在2500小时内在10mA cm-2下表现出稳定的循环,在9000个循环中平均Coulombic效率为99.73%.
在使用高质量负载阴极以1Ag-1的2800个循环后,全电池保持了86.83%的容量保留.

结论:

开发的LDH-O@Zn介层,以生物医学向为灵感,提供物理屏障,并动态调节Zn核和溶解.
在介层中,终极极群和不受阻碍的Zn2+通道引导同质的Zn002沉积.
这项工作突显了接口终端组化学对于为实际水性电池创建可扩展和耐用的阳极的重要性.

关键词:

在 ZnCoAl-LDH 层中水性离子电池水性离子电池电工制造的电工制造的高耐久性高耐久性终止了氧气工程的结束.

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