AMIRA, Sabah; FERKHI, Mosbah; BELGHOBSI, Mabrouk; KHALED, Ammar; MAUVY, Fabrice; GRENIER, Jean-Claude

doi:10.1007/s11581-019-02922-9

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AMIRA, Sabah
Faculté des Sciences Exactes et Informatique Département de Chimie
Laboratoire d’Etude sur les Interactions Matériaux-Environnement

FERKHI, Mosbah
Faculté des Sciences Exactes et Informatique Département de Chimie
Laboratoire d’Etude sur les Interactions Matériaux-Environnement

BELGHOBSI, Mabrouk
Faculté des Sciences Exactes et Informatique Département de Chimie

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Ionics. 2019-08, vol. 25, n° 8, p. 3799-3807

Springer Verlag

Résumé en anglais

The oxygen reduction reaction (ORR) was studied using Nd1.9Sr0.1Ni0.9Co0.1O4 ± δ (NSNCO01) nickelates as cathode material at room temperature in aqueous phase. The citrate method was used for preparing the material. The electrochemical study of ORR was carried out in a 0.5-M NaOH solution at 25 °C with a rotating disk electrode. XRD and SEM analysis were performed to characterize the crystallinity of the material. XPS analysis is used to evaluate the surface state of the material. Electrochemical studies were followed by linear voltammetry and impedance spectroscopy measurements. The electrocatalyst composite Nd1.9Sr0.1Ni0.9Co0.1O4 ± δ/C, consisting of oxide nickelate and carbon (Vulcan XC-72), was mixed and deposited as a layer on a glassy carbon substrate. At room temperature, a significant electrocatalytic activity is observed for the studied material that shows a relatively high electrocatalytic activity for O2 reduction.< Réduire

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ORR process

MIEC

XPS analysis

Impedance spectroscopy

Electrocatalyst materials

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Synthesis, characterization, and electrochemical behavior of a new Nd1.9Sr0.1Ni0.9Co0.1O4 ± δ material as electrocatalyst for the oxygen reduction reaction

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