Ni-Doped SFM Double-Perovskite Electrocatalyst for High-Performance Symmetrical Direct-Ammonia-Fed Solid Oxide Fuel Cells.

ABSTRACT: Ammonia has emerged as a promising fuel for solid oxide fuel cells (SOFCs) owing to its high energy density, high hydrogen content, and carbon-free nature. Herein, the electrocatalytic potential of a novel Ni-doped SFM double-perovskite (Sr_1.9Fe_0.4Ni_0.1Mo_0.5O_6-δ) is studied, for the first time, as an alternative anode material for symmetrical direct-ammonia SOFCs. Scanning and transmission electron microscopy characterization has revealed the exsolution of Ni-Fe nanoparticles (NPs) from the parent Sr₂Fe_1.5Mo_0.5O₆ under anode conditions, and X-ray diffraction has identified the FeNi₃ phase after exposure to ammonia at 800 °C. The active-exsolved NPs contribute to achieving a maximal

SUBMITTER: Rahumi O 

PROVIDER: S-EPMC11472266 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature