ZHAO, Ting; SUN, Li-Ping; LI, Qiang; HUO, Li-Hua; ZHAO, Hui; BASSAT, Jean-Marc.; ROUGIER, Aline; FOURCADE, Sébastien; GRENIER, Jean-Claude

doi:10.1115/1.4033526

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

ZHAO, Ting
Key Laboratory of Functional Inorganic Material Chemistry [KLFIMC]

SUN, Li-Ping
Key Laboratory of Functional Inorganic Material Chemistry [KLFIMC]

LI, Qiang
Key Laboratory of Functional Inorganic Material Chemistry [KLFIMC]

Langue

Article de revue

Ce document a été publié dans

Journal of Electrochemical Energy Conversion and Storage. 2016, vol. 13, n° 1, p. 011006 (7 p.)

ASME

Résumé en anglais

The Pr2CuO4 (PCO) submicrofiber precursors are prepared by electrospinning technique and the thermo-decomposition procedures are characterized by thermal gravity (TG), X-ray diffraction (XRD), Fourier transform infrared spectoscopy (FT-IR), and scanning electron microscopy (SEM), respectively. The fibrous PCO material was formed by sintering the precursors at 900 °C for 5 hrs. The highly porous PCO submicrofiber cathode forms good contact with the Ce0.9Gd0.1O1.95 (CGO) electrolyte after heat-treated at 900 °C for 2 hrs. The performance of PCO submicrofiber cathode is comparably studied with the powder counterpart at various temperatures. The porous microstructure of the submicrofiber cathode effectively increases the three-phase boundary (TPB), which promotes the surface oxygen diffusion and/or adsorption process on the cathode. The PCO submicrofiber cathode exhibits an area specific resistance (ASR) of 0.38 Ω cm2 at 700 °C in air, which is 30% less than the PCO powder cathode. The charge transfer process is the rate limiting step of the oxygen reduction reaction (ORR) on the submicrofiber cathode. The maximum power densities of the electrolyte-support single cell PCO|CGO|NiO-CGO reach 149 and 74.5 mW cm−2 at 800 and 700 °C, respectively. The preliminary results indicate that the PCO submicrofiber can be considered as potential cathode for intermediate temperature solid fuel cells (IT-SOFCs).< Réduire

Mots clés en anglais

Temperature

Fibers

Solid oxide fuel cells

Electrolytes

Oxygen

Electrodes

Electrospinning

Sintering

Diffusion (Physics)

Polarization (Waves)

Métadonnées

Licence d’utilisation du document

Electrochemical property assessment of Pr2CuO4 submicrofiber cathode for intermediate-temperature Solid Oxide Fuel Cells

Langue

Ce document a été publié dans

Résumé en anglais

Mots clés en anglais

DOI

Origine

Unités de recherche