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工程 Sb/Zn₄(OH)₆SO₄·5H₂O接口层通过在现场化学反应获得稳定的 Zn 阳极

Mingyang Xu¹, Jing Li², Liyuan Wang¹

¹Henan Engineering Research Center of Design and Recycle for Advanced Electrochemical Energy Storage Materials, School of Materials Science and Engineering, Henan Normal University, Xinxiang 453007, China.

Journal of colloid and interface science

|June 2, 2024

概括

研究人员为水性离子电池开发了一种新型的保护层,显著提高了循环稳定性,并防止了树的生长,以更安全,更持久地储存能量.

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提供了安全性和丰富的资源,但受到状物生长和界面反应的影响.
这些问题限制了循环稳定性,阻碍了它们在储能领域的广泛应用.

研究的目的:

设计和实施一个强大的人工保护层用于阳极.
为了提高水性离子电池的循环稳定性和安全性.

主要方法:

使用现场化学反应策略,在阳极 (Zn@Sb/ZHS) 上创建了由 (Sb) 纳米颗粒和硫酸氧化水合物 (ZHS) 板组成的双相保护层.
组装了对称细胞 (Zn@Sb/ZHS//Zn@Sb/ZHS) 和带有MnO2阴极的全细胞,并对电化学性能进行了测试.

主要成果:

该Sb/ZHS层促进了统一的化和电场均化.
保护层表现出优异的电解质可湿性,快速离子转移和抗腐蚀性能.
对称的细胞表现出最小的电压歇斯底里和超过2000小时的稳定循环在1mA cm-2.2.
在1500个循环后,完整的细胞保留了初始容量的94.17%.

结论:

Sb/ZHS人工保护层有效地稳定了水性电解质中的阳极.
这一策略显著提高了可充电水性离子电池的循环稳定性和性能.
这些发现为设计下一代储能设备的先进保护层提供了一种新方法.

关键词:

Sb/Zn{4}{O}{6}SO{4}·5H{2}O 接口保护层的保护层足够的电解质可湿性足够的电解质可湿性具有高度可逆性的 Zn 阳极.均的 Zn 沉积方式

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