Abstract The Zn-air battery system is attractive because of its potentially high power density, environmental compatibility and low-cost materials [1]. This paper is focused on understanding the degradation of Zn air batteries, in particular the evolution of Zn dendrites, one of the main degradation mechanisms. Complementary tomographic techniques allow the direct 3D imaging and characterisation of complex microstructures, including the observation and quantification of dendrite growth. Here we present results from 3D x-ray and FIB-SEM tomography of Zn dendrite formation in a zinc-air battery, down to resolutions of tens of nanometers, enabling analysis of complex micro-structures. This approach is shown to be effective in understanding how electrochemical dendrites grow, and demonstrates that tomography coupled with modelling can provide new insights into dendrite growth in electrochemical systems.

中文翻译：

---

将多长度尺度高分辨率 3D 成像和建模集成到电化学枝晶中机械故障位点的表征和识别中

摘要 锌-空气电池系统因其潜在的高功率密度、环境兼容性和低成本材料而备受关注[1]。本文的重点是了解锌空气电池的退化，特别是锌枝晶的演变，这是主要的退化机制之一。互补的断层扫描技术允许对复杂的微观结构进行直接 3D 成像和表征，包括枝晶生长的观察和量化。在这里，我们展示了锌空气电池中锌枝晶形成的 3D X 射线和 FIB-SEM 断层扫描结果，分辨率可达数十纳米，从而能够分析复杂的微观结构。这种方法被证明可以有效地理解电化学枝晶的生长方式，