论文标题
固体氧化物燃料电池阳极的微观结构演变，其特征是持续的同源性
Microstructure Evolution of Solid Oxide Fuel Cell Anodes Characterized by Persistent Homology
论文作者
论文摘要
发现伴随固体氧化物燃料电池的长期运行的微观结构演化机制是为未来设计更耐用的能源系统的基本挑战。迄今为止，燃料电池堆栈降解的研究主要集中在电化学性能上，更少的是平均的微观结构参数。在这里，我们展示了一种替代方法，其中使用电子断层扫描以及拓扑数据分析研究了三维微结构特征的演变。后者在长期运行电极之前和之后产生微观结构的持续图像。这些图像对三个阶段的降解过程有了新的见解：镍，孔和Yttrium稳定的锆。
Uncovering microstructure evolution mechanisms that accompany the long-term operation of solid oxide fuel cells is a fundamental challenge in designing a more durable energy system for the future. To date, the study of fuel cell stack degradation has focused mainly on electrochemical performance and, more rarely, on averaged microstructural parameters. Here we show an alternative approach in which an evolution of three-dimensional microstructural features is studied using electron tomography coupled with topological data analysis. The latter produces persistent images of microstructure before and after long-term operation of electrodes. Those images unveil a new insight into the degradation process of three involved phases: nickel, pores, and yttrium-stabilized zirconium.
