Electrocatalytic evolution of hydrogen on a novel SrPdO3 perovskite electrode

Galal, Ahmed M.; Darwish, S.; Fatah, Ahmed; Ali, Shimaa M.

doi:10.1016/j.jpowsour.2009.12.091

Cited by 27 publications

(28 citation statements)

References 4 publications

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“…The SrPdO 3 perovskite, prepared for the first time by the citrate combustion methodology by our group, presented interesting electrocatalytic and sensing applications [32]. Furthermore, SrPdO 3 has been used as an efficient catalyst for the hydrogen evolution reaction [32], which was 2 of 12 subsequently implemented for the first time by our group as an electrochemical sensor for several neurotransmitters and hydrazine detection [33][34][35]. It was discovered that the nano-dispersed Pd sites within the stable perovskite matrix are more effectual than the electro-deposited Pd.…”

Section: Introductionmentioning

confidence: 99%

Study of the Oxygen Evolution Reaction at Strontium Palladium Perovskite Electrocatalyst in Acidic Medium

Eskandrani

Ali

Al-Otaibi

2020

IJMS

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The catalytic activity of Sr2PdO3, prepared through the sol-gel citrate-combustion method for the oxygen evolution reaction (OER) in a 0.1 M HClO4 solution, was investigated. The electrocatalytic activity of Sr2PdO3 toward OER was assessed via the anodic potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The glassy carbon modified Sr2PdO3 (GC/Sr2PdO3) electrode exhibited a higher electrocatalytic activity, by about 50 times, in comparison to the unmodified electrode. The order of the reaction was close to unity, which indicates that the adsorption of the hydroxyl groups is a fast step. The calculated activation energy was 21.6 kJ.mol−1, which can be considered a low value in evaluation with those of the reported OER electrocatalysts. The Sr2PdO3 perovskite portrayed a high catalyst stability without any probability of catalyst poisoning. These results encourage the use of Sr2PdO3 as a candidate electrocatalyst for water splitting reactions.

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Section: Introductionmentioning

confidence: 99%

Study of the Oxygen Evolution Reaction at Strontium Palladium Perovskite Electrocatalyst in Acidic Medium

Eskandrani

Ali

Al-Otaibi

2020

IJMS

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“…24 These authors have also shown, that the Curie-Weiss plot derived from the evolution of the molar magnetic susceptibility as a function of temperatures (for temperatures higher than 280 K), exhibits an antiferromagnetic (AFM) character, with a magnetic ordering temperature of about 370 K and a surprisingly large calculated magnetic moment of 5.7 µ B , suggestive of a high-spin (HS) configuration (t ion. 24 Considering that the spin-state of d 6 perovskites such as LaCoO 3 represents a great challenge for both theory and experiment and have been the source of much controversy 25,26 these findings should be taken with a certain caution. At low temperature, in fact, LaCoO 3 (isoelectronic to SrPdO 3 ) posses a low-spin (LS) configuration (t ↑↓↑↓↑↓ 2g e 0 g ) and a diamagnetic semiconducting character.…”

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confidence: 98%

Structural determination and electronic properties of the 4dperovskite SrPdO3

Franchini

2014

Phys. Rev. B

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The structure and ground state electronic structure of the recently synthesized SrPdO3 perovskite [A. Galal et al., J. Power Sources, 195, 3806 (2010)] have been studied by means of screened hybrid functional and the GW approximation with the inclusion of electron-hole interaction within the testcharge/test-charge scheme. By conducting a structural search based on lattice dynamics and group theoretical method we identify the orthorhombic phase with Pnma space group as the most stable crystal structure. The phase transition from the ideal cubic perovskite structure to the Pnma one is explained in terms of the simultaneous stabilization of the antiferrodistortive phonon modes R + 4 and M + 3 . Our results indicate that SrPdO3 exhibits an insulating ground state, substantiated by a GW0 gap of about 1.1 eV. Spin polarized calculations suggests that SrPdO3 adopts a low spin state (t ↑↓↑↓↑↓ 2g e 0 g ), and is expected to exhibit spin excitations and spin state crossovers at finite temperature, analogous to the case of 3d isoelectronic LaCoO3. This would provide a new playground for the study of spin state transitions in 4d oxides and new opportunity to design multifunctional materials based on 4d Pnma building block.

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“…Until recently, a wide range of alternatives have been reported to show outstanding catalytic performance toward the HER, such as sulfides, carbides, nitrides, and others . Perovskite oxides, which were previously reported to possess HER catalytic activity in acids, have recently been demonstrated to exhibit acceptable HER performance in alkaline electrolytes. For example, Xu et al were the first to report the effectiveness of perovskites as potential candidates for HER electrocatalysis in alkaline environments .…”

Section: Nanostructured Perovskites For Electrocatalysis‐based Energymentioning

confidence: 99%

Recent Advances in Novel Nanostructuring Methods of Perovskite Electrocatalysts for Energy‐Related Applications

et al. 2018

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Perovskite oxides hold great promise as efficient electrocatalysts for various energy‐related applications owing to their low cost, flexible structure, and high intrinsic catalytic activity. However, conventional synthetic methods can only obtain perovskite catalysts with large particle sizes, small surface areas, and few morphological features, leading to limited catalytic activity and thus posing a major challenge toward real‐world applications. Reducing the size of bulk perovskites down to the nanosize represents an efficient way to improve the electrocatalytic performance. A comprehensive overview of recent progress in the nanostructuring of perovskites for catalyzing several key reactions in metal–air batteries, water splitting, and solid oxide fuel cells is provided. A range of synthetic protocols for making perovskite nanostructures are summarized, followed by an emphasis on how each method can be tailored to obtain high‐performing perovskite nanocatalysts. These recent advances highlight the enormous potential of nanosized perovskites for facilitating the electrocatalytic reactions. The remaining challenges and future directions are pointed out for the development of next‐generation perovskite‐based nanostructured catalysts.

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Electrocatalytic evolution of hydrogen on a novel SrPdO3 perovskite electrode

Cited by 27 publications

References 4 publications

Study of the Oxygen Evolution Reaction at Strontium Palladium Perovskite Electrocatalyst in Acidic Medium

Study of the Oxygen Evolution Reaction at Strontium Palladium Perovskite Electrocatalyst in Acidic Medium

Structural determination and electronic properties of the 4dperovskite SrPdO3

Recent Advances in Novel Nanostructuring Methods of Perovskite Electrocatalysts for Energy‐Related Applications

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