Assessment of Nd2-XSrXNiO4-d as a cathodic material for Solid Oxide Fuel Cell applications

S. Simeonov (1) , S. Kozhukharov (1) , Jean-Claude Grenier (2) , M. Machkova (1) , V. Kozhukharov (1)

1 University of Chemical Technology and Metallurgy [Sophia]
2 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux

The features and performance of each device and equipment is directly related to its composing materials. The efficiency and durability of the Solid Oxide Fuel Cells (SOFC) also depend on their composing elements. Other important factors for the SOFC behavior are the working conditions (compositions, and humidity of the fuel and oxidant gaseous mixtures, temperature, pressure, etc.). These facts predetermine the necessity for detailed investigation of the behavior of each composing layer of SOFC. For this reason, the electrical characteristics of Nd2-xSrxNiO4-d as SOFC cathodic material were evaluated by high temperature electrochemical methods, durability tests, and posterior XRD and SEM characterization. As a result, the optimal composition and working conditions for the investigated material in assembled SOFC were determined. The obtained material reveals excellent durability and compatibility with the rest SOFC components.

Mots clés: SOFC; Cathodic materials; Solid solution; Stability; Durability; Thermal Voltammetry; AFM

Domaines: Matériaux

S. Simeonov, S. Kozhukharov, Jean-Claude Grenier, M. Machkova, V. Kozhukharov. Assessment of Nd2-XSrXNiO4-d as a cathodic material for Solid Oxide Fuel Cell applications. Journal of Chemical Technology and Metallurgy (JCTM), 2013, 48 (1), pp.104-110. ⟨hal-00975288⟩