A highly active and stable La0.5Sr0.5Ni0.4Fe0.6O3-δ perovskite electrocatalyst for oxygen evolution reaction in alkaline media

Wang, Cheng Cheng; Cheng, Yi; Ianni, Enrico; Lin, Bin

doi:10.1016/j.electacta.2017.06.161

Cited by 44 publications

(27 citation statements)

References 50 publications

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“…The bigger particle sizes (above 50 nm), observed in the images, can be attributed to the high sintering temperature and aggregation after heat treatment, which are also observed in the TEM analysis. Although all SSFC perovskites exhibited big particle sizes, its average particle size was smaller than that of B 0.5 S 0.5 C 0.8 F 0.2 O 3-δ perovskite (200 nm) [14]. Figure 3 illustrates the microstructure of all SSFC perovskites, the low resolution image revealed slight differences in shape sizes and particle sizes.…”

Section: Materials Structure and Morphologymentioning

confidence: 97%

“…However, the overall efficiency of water splitting is severely limited by the slow kinetics of the oxygen evolution reaction (OER) [10][11][12]. This is a point of concern for researchers who are focused on finding materials (electrocatalysts) that are less expensive, chemically stable, exhibit low overpotentials, facilitate fast reaction kinetics, generate more active sites, and produce high OER catalytic activity [13,14].…”

Section: Introductionmentioning

confidence: 99%

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Application of Sm0.8Sr0.2Fe1-xCoxO3-δ (x = 0.2, 0.5, 0.8) Perovskite for the Oxygen Evolution Reaction in Alkaline Media

Njoku

Kriek

2018

Electrocatalysis

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A new type of perovskite, i.e. Sm 0.8 Sr 0.2 Fe 0.8 Co 0.2 O 3-δ (SSFC1), Sm 0.8 Sr 0.2 Fe 0.5 Co 0.5 O 3-δ (SSFC2), and Sm 0.8 Sr 0.2 Fe 0.2 Co 0.8 O 3-δ ( SSFC3) were (i) synthesised by employing a sol gel method with subsequent calcination at 1000°C for 10 h and (ii) investigated for its activity towards the oxygen evolution reaction (OER) in alkaline medium. The synthesised perovskites were examined by X-ray diffraction to determine the crystal structure of the material while the textural properties were examined by Fourier transform infrared spectroscopy (FTIR). The morphology and microstructure were examined by scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HRTEM). The SSFC2 perovskite exhibited the highest catalytic activity, with a Tafel slope of 112 mV and an overpotential (η) of 0.400 V (V vs. RHE) to achieve 10 mA cm −2 , as well as good stability in 0.1 M KOH in that it only showed an increase of 40 mV over a 2-h potentiodynamic scan. These SSFCn (n = 1, 2, or 3) perovskites exhibit extreme flexibility in their composition and allows for a simple approach in doping to enhance their activity for the OER, which make them good candidates for the OER in alkaline solution.

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Section: Materials Structure and Morphologymentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Application of Sm0.8Sr0.2Fe1-xCoxO3-δ (x = 0.2, 0.5, 0.8) Perovskite for the Oxygen Evolution Reaction in Alkaline Media

Njoku

Kriek

2018

Electrocatalysis

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“…[49] Lin and Jiang synthesized a La 0.5 Sr 0.5 Ni 0.4 Fe 0.6 O 3Àd perovskite catalystb yasimple doping strategya nd investigated its OER activity. [50] It showed high catalytic activity and outstanding stability in 0.1 m KOH (an onset potential of 1.56 Va nd Ta fel slope of 76 mV dec À1 ). Wong'sg roup synthesized "high aspect ratio" motifs of pure LaNiO 3 perovskite nanorods towards OER for the first time by a templatem ethod.…”

Section: Other Ni-based Oxidesmentioning

confidence: 98%

“…Recently, ABO 3 ‐type oxides known as perovskites, in which A is a rare‐earth or alkaline‐earth metal and B is a transition metal, are of particular interest as OER electrocatalysts in alkaline conditions due to their flexibility in physical–chemical properties and high intrinsic activities . Lin and Jiang synthesized a La 0.5 Sr 0.5 Ni 0.4 Fe 0.6 O 3−δ perovskite catalyst by a simple doping strategy and investigated its OER activity . It showed high catalytic activity and outstanding stability in 0.1 m KOH (an onset potential of 1.56 V and Tafel slope of 76 mV dec −1 ).…”

Section: Other Ni‐based Oxidesmentioning

confidence: 99%

Recent Progress on Nickel‐Based Oxide/(Oxy)Hydroxide Electrocatalysts for the Oxygen Evolution Reaction

Chen

Rui

Zhu

et al. 2018

Chemistry A European J

189

127

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Developing clean and sustainable energies as alternatives to fossil fuels is in strong demand within modern society. The oxygen evolution reaction (OER) is the efficiency-limiting process in plenty of key renewable energy systems, such as electrochemical water splitting and rechargeable metal-air batteries. In this regard, ongoing efforts have been devoted to seeking high-performance electrocatalysts for enhanced energy conversion efficiency. Apart from traditional precious-metal-based catalysts, nickel-based compounds are the most promising earth-abundant OER catalysts, attracting ever-increasing interest due to high activity and stability. In this review, the recent progress on nickel-based oxide and (oxy)hydroxide composites for water oxidation catalysis in terms of materials design/synthesis and electrochemical performance is summarized. Some underlying mechanisms to profoundly understand the catalytic active sites are also highlighted. In addition, the future research trends and perspectives on the development of Ni-based OER electrocatalysts are discussed.

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“…Perovskite oxides (ABO 3 ) are the most frequently considered air catalysts in recently studied metal-air battery systems [7,16,17]. Because of their high electronic and ionic conducting properties, they have demonstrated excellent bifunctional catalytic activity towards ORR/OER reactions when the A sites and B sites are substituted with other elements [18,19]. Interestingly, lanthanum manganite (LaMnO 3 ) perovskite is a well-known catalyst for ORR in the perovskite family due to its defective cation-deficient lattice and the presence of multiple oxidation states, such as Mn 3+ and Mn 4+ [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Graphene Nanosheet-Wrapped Mesoporous La0.8Ce0.2Fe0.5Mn0.5O3 Perovskite Oxide Composite for Improved Oxygen Reaction Electro-Kinetics and Li-O2 Battery Application

et al. 2021

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A novel design and synthesis methodology is the most important consideration in the development of a superior electrocatalyst for improving the kinetics of oxygen electrode reactions, such as the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER) in Li-O2 battery application. Herein, we demonstrate a glycine-assisted hydrothermal and probe sonication method for the synthesis of a mesoporous spherical La0.8Ce0.2Fe0.5Mn0.5O3 perovskite particle and embedded graphene nanosheet (LCFM(8255)-gly/GNS) composite and evaluate its bifunctional ORR/OER kinetics in Li-O2 battery application. The physicochemical characterization confirms that the as-formed LCFM(8255)-gly perovskite catalyst has a highly crystalline structure and mesoporous morphology with a large specific surface area. The LCFM(8255)-gly/GNS composite hybrid structure exhibits an improved onset potential and high current density toward ORR/OER in both aqueous and non-aqueous electrolytes. The LCFM(8255)-gly/GNS composite cathode (ca. 8475 mAh g−1) delivers a higher discharge capacity than the La0.5Ce0.5Fe0.5Mn0.5O3-gly/GNS cathode (ca. 5796 mAh g−1) in a Li-O2 battery at a current density of 100 mA g−1. Our results revealed that the composite’s high electrochemical activity comes from the synergism of highly abundant oxygen vacancies and redox-active sites due to the Ce and Fe dopant in LaMnO3 and the excellent charge transfer characteristics of the graphene materials. The as-developed cathode catalyst performed appreciable cycle stability up to 55 cycles at a limited capacity of 1000 mAh g−1 based on conventional glass fiber separators.

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A highly active and stable La0.5Sr0.5Ni0.4Fe0.6O3-δ perovskite electrocatalyst for oxygen evolution reaction in alkaline media

Cited by 44 publications

References 50 publications

Application of Sm0.8Sr0.2Fe1-xCoxO3-δ (x = 0.2, 0.5, 0.8) Perovskite for the Oxygen Evolution Reaction in Alkaline Media

Application of Sm0.8Sr0.2Fe1-xCoxO3-δ (x = 0.2, 0.5, 0.8) Perovskite for the Oxygen Evolution Reaction in Alkaline Media

Recent Progress on Nickel‐Based Oxide/(Oxy)Hydroxide Electrocatalysts for the Oxygen Evolution Reaction

Graphene Nanosheet-Wrapped Mesoporous La0.8Ce0.2Fe0.5Mn0.5O3 Perovskite Oxide Composite for Improved Oxygen Reaction Electro-Kinetics and Li-O2 Battery Application

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