Characterization of anode-supported solid oxide fuel cells with Nd2NiO4 cathodes
Langue
en
Article de revue
Ce document a été publié dans
Journal of Fuel Cell Science and Technology. 2009, vol. 6, n° 4, p. 041016 (6 p.)
American Society of Mechanical Engineers
Résumé en anglais
A systematic study was initiated of anode-supported solid oxide fuel cells (SOFCs) with Nd<sub>2</sub>NiO<sub>4</sub> cathodes. This type of cathode, a mixed conducting K<sub>2</sub>NiF<sub>4</sub>-type material, can be ...Lire la suite >
A systematic study was initiated of anode-supported solid oxide fuel cells (SOFCs) with Nd<sub>2</sub>NiO<sub>4</sub> cathodes. This type of cathode, a mixed conducting K<sub>2</sub>NiF<sub>4</sub>-type material, can be considered as a candidate for SOFC applications. In this study, the influence of (I ) the presence of a Ce<sub>0.8</sub>Gd<sub>0.2</sub>O<sub>1.9</sub> (CGO) interlayer between the electrolyte and the cathode, (2) sintering conditions, and (3) the grain size of the powder on the performance of SOFCs with Nd<sub>2</sub>NiO<sub>4</sub> cathodes was investigated in more detail. Results from current density-voltage characteristics and permeation and gas diffusion measurements showed that the electrochemical performance was promising for SOFCs including a CGO interlayer and a Nd<sub>2</sub>NiO<sub>4</sub> cathode (prepared with a powder with a d<sub>50</sub> of 0.5 A/cm<sup>2</sup> or 0.8 μm) sintered at 1100°C or higher; current density at 800°C and 700 mV between 1.2 and 1.3 A/cm<sup>2</sup>. The microstructure of the cathode was such that no gas diffusion problems occurred.< Réduire
Mots clés en espagnol
Solid-oxide fuel cells
Electrochemical electrodes
Origine
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