Hierarchical exsolution in vertically aligned heterostructures.

ABSTRACT: Metal nanoparticle exsolution from metal oxide hosts has recently garnered great attention to improve the performance of energy conversion and storage devices. In this study, the nickel exsolution mechanisms in a vertically aligned nanostructure (VAN) thin film of heteroepitaxial (Sr_0.9Pr_0.1)_0.9Ti_0.9Ni_0.1O_3-δ-Ce_0.9Gd_0.1O_1.95 with a columnar architecture was investigated for the first time. Experimental results and Density Functional Theory (DFT) calculations reveal that the multiple vertical interphases in a VAN with a hierarchical arrangement provide faster and more selective Ni diffusion pathways to the surface than traditional bulk diffusion in epitaxial films. Kinetic studies conducted at

SUBMITTER: Zamudio-Garcia J 

PROVIDER: S-EPMC11487182 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature