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对于先进的水性电池,Zn阳极表面涂层的优选纹理:小变化但大收益

Xiaohan Zhao¹, Zelong Gong², Gulian Wang¹

¹Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P.R. China.

Angewandte Chemie (International ed. in English)

|September 3, 2025

概括

用ZIF-8 (((200) 晶体进行表面被动化,通过抑制副作用和树生长,提高水性电池中的阳极性能. 这种晶体工程方法改善了界面特性和离子选择性,以获得更好的电化学稳定性.

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:

金属阳极对于水性电池至关重要,但会受到副作用和树突形成的影响.
用表面被动化策略来提高阳极的稳定性.
消极化层的晶体导向对阳极性能的影响还没有得到充分的研究.

研究的目的:

为了研究ZIF-8被动化层对阳极性能晶体学定向的影响.
阐明特定ZIF-8方向改善电化学性能的机制.
展示晶体工程作为一种提高阳极稳定性的方法.

主要方法:

密度函数理论 (DFT) 计算分析ZIF-8表面特性和相互作用.
在阳极上实验性地制备和表征ZIF-8层,控制晶体学方向.
电化学测试,以评估改性阳极的性能.

主要成果:

DFT计算显示,ZIF-8(200) 与其他方向相比,具有较低的d频段中心,较小的d-p频段差异和较弱的H2O吸附.
实验结果证实ZIF-8(200) 显著抑制的演化.
该ZIF-8(200) 层增强了界面相互作用,机械性能,并抑制了树突的生长,同时使选择性Zn2+运输成为可能.

结论:

对于改善水性电池中的阳极性能来说,ZIF-8 ((200) 的偏好的晶体定向至关重要.
表面被动化层的晶体工程为增强电化学稳定性和抑制树突提供了一种新的策略.
这项工作为开发高性能水性电池提供了新的途径.

关键词:

水性电池是一种水性电池.晶体工程晶体工程金属有机框架的框架.表面化学表面化学可以在中找到.

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