Characterization of Ruddlesden-Popper La_2-xBa_xNiO_4±δ Nickelates as Potential Electrocatalysts for Solid Oxide Cells.

ABSTRACT: Ruddlesden-Popper La_2-xBa_xNiO_4±δ (x = 0-1.1) nickelates were prepared by a glycine-nitrate combustion route combined with high-temperature processing and evaluated for potential application as electrocatalysts for solid oxide cells and electrochemical NO_x elimination. The characterization included structural, microstructural and dilatometric studies, determination of oxygen nonstoichiometry, measurements of electrical conductivity and oxygen permeability, and assessment of chemical compatibility with other materials. The formation range of phase-pure solid solutions was found to be limited to x = 0.5. Exceeding this limit leads to the co-existence of the main nickelate phase with low-melting Ba- and Ni-based sec

SUBMITTER: Zakharchuk K 

PROVIDER: S-EPMC9965424 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature