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莲花效应启发了稳定的Zn金属阳极的疏水策略

Lishun Han¹, Yiming Guo², Fanghua Ning²

¹State Key Laboratory of Advanced Special Steel & School of Materials Science and Engineering and Shanghai Key Laboratory of Advanced Ferrometallurgy, Shanghai University, Shanghai, 200444, China.

Advanced materials (Deerfield Beach, Fla.)

|October 13, 2023

概括

研究人员开发了一种用酸修饰的阳极,利用莲花效应控制水吸附,显著提高了离子电池的稳定性和性能. 这项创新解决了金属阳极的关键挑战,以改善电池开发.

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
表面化学表面化学

背景情况:

离子电池 (ZIB) 面临着阳极不稳定性问题,如树突的生长和腐蚀.
控制金属阳极上的水吸附对于ZIB的发展至关重要.
现有的ZIB技术缺乏有效的水吸附控制方法.

研究的目的:

为了研究莲花效应在阳极上控制水吸附的应用.
为了提高ZIB中金属阳极的稳定性和电化学性能.
为了展示一个通用战略,稳定的ZIB阳极发展.

主要方法:

用酸修饰的Cu@Zn (SA-Cu@Zn) 阳极与集成的Cu纳米棒和疏水组的制造.
利用莲花效应来设计水吸附特性.
进行长期循环稳定性测试和库伦比效率测量.
在现场进行表征,DFT计算和水接触角度测量.

主要成果:

该SA-Cu@Zn阳极证明了超过2000小时的长期循环稳定性.
在1 mA cm−2下达到99.83%的高平均库伦比效率 (CE),用于1 mAh cm−2.2.
莲花效应显著降低了水吸附,并提高了沉积的选择性.
增强了ZnidiyeV2O5全细胞的电化学性能.

结论:

莲花效应提供了一种有效的策略,用于控制阳极上的水吸附.
SA-Cu@Zn阳极表现出卓越的稳定性和可逆性,解决了关键的ZIB挑战.
这种方法为开发稳定和高性能ZIB阳极提供了一种通用方法.

关键词:

在 Zn 阳极中,有 Zn 阳极.离子电池是一种离子电池.气演化反应反应的反应疏水策略是一种疏水策略.莲花效应是什么意思

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