Electrochemical properties of La2BO4+δ/C electrocatalysts and study of the mechanism of the oxygen reduction reaction in alkaline medium

Amira, Sabah; Ferkhi, Mosbah; Khaled, Ammar; Pireaux, Jean‐Jacques

doi:10.1007/s13738-021-02423-5

Cited by 2 publications

(1 citation statement)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Lanthanide nickelate materials (Ln 2 NiO 4+δ , Ln = La, Pr, Nd) constitute an attractive class of complex oxides for applied electrochemical purposes: as electrode materials for solid oxide fuel cells and electrolysis cells [ 1 , 2 ]; as components of cathode materials for lithium-ion batteries [ 3 , 4 ]; as oxygen permeable membranes for oxygen separation [ 5 , 6 ]; as efficient (photo)electrocatalysts toward oxidation [ 7 , 8 ] and hydrogen evolution [ 9 , 10 ] reactions; as components of sensors [ 11 , 12 , 13 ], etc. Such a wide range of potential applications is due to features in their layered crystal structure, which offer high ionic and electronic transport combined with relatively good chemical stability and mechanical properties, starting from standard conditions and ending with high-temperature operation at 800–1000 °C.…”

Section: Introductionmentioning

confidence: 99%

Modernized Synthesis Technique of Pr2NiO4+δ-Based Complex Oxides Using Low-Temperature Salt Melts

2022

View full text Add to dashboard Cite

Phases based on layered lanthanide nickelates are considered as promising electrode materials for various electrochemical devices, including solid oxide fuel cells and electrolysis cells. While such compounds may be prepared using either solid state or solution-assisted syntheses, each of these approaches entails certain problems. In the present work, we propose a novel approach for the simple and straightforward preparation of Pr2NiO4+δ-based materials. This approach involves co-melting of initial nitrate components, followed by high-temperature decomposition of the obtained mixture. The developed synthesis method exhibits a number of advantages over conventional techniques, enabling highly dispersed and single-phase powders to be obtained at a reduced synthesis temperature of 1050 °C. Therefore, the results of this work open new possibilities for the cost-effective preparation of Ruddlesden–Popper oxide phases.

show abstract