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Zn海绵阳极的形成和放电,随后通过同步机硬X射线成像

Benedetto Bozzini¹, Nicola Sodini², Alexander P Kao²

¹Department of Energy, Politecnico di Milano, v. Lambruschini 4, 20156 Milano, Italy.

ACS applied energy materials

|August 1, 2025

概括

使用氧化 (ZnO) 的工程 (Zn) 阳极需要一个形成步骤来创建活性Zn金属. 这项研究使用先进的X射线成像来了解Zn海绵阳极形成,优化条件以防止结构损伤.

科学领域:

电化学电化学电化学
材料科学材料科学材料科学
材料工程材料工程材料工程

背景情况:

工程 (Zn) 阳极经常使用与电解质接触的氧化 (ZnO).
随着组装的细胞的放电,需要进行最初的充电步骤,称为"形成",以产生金属 Zn.
由于其复杂的电化学相增长和形态化学印记,控制基于ZnO的阳极形成至关重要,这显著影响了电极性能.

研究的目的:

为了研究Zn海绵电极的形成过程.
了解形成和初始放电期间的早期结构演变和阶段分布.
为了确定最佳的潜在静态形成条件,防止引起的海绵结构损伤.

主要方法:

动态 *在操作* 放射学被用来确定合适的潜在静态形成条件.
时间间隔 * in situ * 断层扫描用于监测形成和第一个放电周期期间的结构变化.
结合电化学分析和基于同步射线的X射线成像技术.

主要成果:

确定了潜在静态形成条件,以避免气诱导对Zn海绵结构的损伤.
追踪了Zn海绵电极结构在初始形成和放电阶段的演变.
可视化了电极内的 Zn/ZnO 阶段分布的动态变化.

结论:

了解形成过程中的电化学相增长是制造高性能 Zn 阳极的关键.
基于同步的X射线成像为Zn海绵电极的*运行*结构演变提供了关键的见解.
优化的形成协议可以提高性电池中 Zn 阳极的稳定性和功能.

关键词:

在X射线显微断层图像上.阳极是一种阳极.形成形成形成形成在操作中.在现场 (in situ) 进行.同步子辐射是同步子辐射.电池电池是一个电池.海绵是一种海绵.

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