Rare earth metal (Sm)-doped NiMnO<sub>3</sub> nanostructures for highly competent alkaline oxygen evolution reaction

Swathi, S.; Yuvakkumar, R.; Ravi, G.; Al‐Sehemi, Abdullah G.; Velauthapillai, Dhayalan

doi:10.1039/d2na00022a

Cited by 31 publications

(6 citation statements)

References 35 publications

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“…The cyclic voltammograms obtained in 0.1 M KOH and the relevant plot of current densities against sweeping rates ranging from 5 to 140 mV s –1 at (c) NF/La-PrCH and (d) NF/Sr–La–PrCH. The comparison of the required overpotentials of the (e) as-prepared electrodes together and the (f) recently published OER electrocatalysts to reach J = 10 mA cm –2 (references are − , respectively, from left to right), with that of our work.…”

Section: Resultsmentioning

confidence: 68%

Oxygen Vacancy-Originated Inorganic Proton Relay for the Oxygen Evolution Reaction: Fast Proton Hopping via La-Doped Praseodymium Carbonate Hydroxide

Ahanjan,

Shamsipur,

Hassani

et al. 2023

J. Phys. Chem. C

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Section: Resultsmentioning

confidence: 68%

Oxygen Vacancy-Originated Inorganic Proton Relay for the Oxygen Evolution Reaction: Fast Proton Hopping via La-Doped Praseodymium Carbonate Hydroxide

Ahanjan,

Shamsipur,

Hassani

et al. 2023

J. Phys. Chem. C

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“…The incorporation of minute Sm 2 O 3 clusters into ZnO enhanced the surface area, reduced the amount of surface defects, and increased the efficiency with which the electronic assemblies of the surface-active sites were optimized. Based on these findings, Sm doping provides a feasible paradigm for rearranging catalysts to improve their spatial performance [ 97 ].…”

Section: Rare-earth Metal Oxide/oxh For Oer and Hermentioning

confidence: 99%

Metal-Oxides- and Metal-Oxyhydroxides-Based Nanocomposites for Water Splitting: An Overview

Chen,

Anushya

et al. 2023

Nanomaterials

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Water electrolysis is an important alternative technology for large-scale hydrogen production to facilitate the development of green energy technology. As such, many efforts have been devoted over the past three decades to producing novel electrocatalysis with strong electrochemical (EC) performance using inexpensive electrocatalysts. Transition metal oxyhydroxide (OxH)-based electrocatalysts have received substantial interest, and prominent results have been achieved for the hydrogen evolution reaction (HER) under alkaline conditions. Herein, the extensive research focusing on the discussion of OxH-based electrocatalysts is comprehensively highlighted. The general forms of the water-splitting mechanism are described to provide a profound understanding of the mechanism, and their scaling relation activities for OxH electrode materials are given. This paper summarizes the current developments on the EC performance of transition metal OxHs, rare metal OxHs, polymers, and MXene-supported OxH-based electrocatalysts. Additionally, an outline of the suggested HER, OER, and water-splitting processes on transition metal OxH-based electrocatalysts, their primary applications, existing problems, and their EC performance prospects are discussed. Furthermore, this review article discusses the production of energy sources from the proton and electron transfer processes. The highlighted electrocatalysts have received substantial interest to boost the synergetic electrochemical effects to improve the economy of the use of hydrogen, which is one of best ways to fulfill the global energy requirements and address environmental crises. This article also provides useful information regarding the development of OxH electrodes with a hierarchical nanostructure for the water-splitting reaction. Finally, the challenges with the reaction and perspectives for the future development of OxH are elaborated.

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“…Among non-noble metal electrocatalysts, transition metal oxides (TMOs) like NiO, Co 3 O 4 , and Fe 2 O 3 have garnered attention for their notable attributes, including high stability in alkaline environments, abundance in the Earth’s crust, cost-effectiveness, nontoxicity, and high redox potential. − Various strategies for improving the electrocatalyst activities of TMOs include nanostructure synthesis, doping, support modification, defect engineering, and hybridization with other materials. , However, studies to enhance the stability and activity of the TMO electrocatalyst are still ongoing …”

Section: Introductionmentioning

confidence: 99%

“…The formation of the d-f electronic ladder modifies the electronic structure of the electrocatalysts, improving OER performance. 13,14 Some rare-earth elements, such as Ce, 15,16 Er, 17,18 Sm, 5,19 have been investigated as electrocatalysts for water splitting applications. To the best of our knowledge, the combination of Er 2 O 3 and TMOs has not been reported so far for OER.…”

Section: ■ Introductionmentioning

confidence: 99%

Influence of Er₂O₃ Nanoclusters on Transition Metal Oxide Nanostructures in Water Oxidation

Huynh,

Jana,

Chung

et al. 2024

ACS Appl. Nano Mater.

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The search for an effective, stable, and economically viable electrocatalyst for water splitting to replace expensive noble catalysts remains imperative. This investigation evaluates the impact of erbium oxide (Er 2 O 3 ) on the oxygen evolution reaction (OER) activity of transition metal oxides (TMOs), including nickel oxide (NiO), cobalt oxide (Co 3 O 4 ), and iron oxide (Fe 2 O 3 ). Introducing Er 2 O 3 nanoclusters into TMO nanostructures produces a heterostructure interface between Er 2 O 3 and the active TMOs, leveraging Er 2 O 3 's unique 4f electron occupancy as an effective electronic modulator, thus enhancing its electrocatalytic activity. Findings reveal that the Er 2 O 3 and Fe 2 O 3 hybrid (ErFeO) exhibits the most promising OER activity, characterized by low overpotential and Tafel slope, exceptional durability relative to synthesized materials, and outperforming the commercial noble catalyst, RuO 2 . Consequently, ErFeO is a prospective electrocatalyst for OER applications.

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Rare earth metal (Sm)-doped NiMnO₃ nanostructures for highly competent alkaline oxygen evolution reaction

Abstract: In the present work, samarium-doped nickel manganese oxide was produced by employing a straightforward co-precipitation method.

Cited by 31 publications

References 35 publications

Oxygen Vacancy-Originated Inorganic Proton Relay for the Oxygen Evolution Reaction: Fast Proton Hopping via La-Doped Praseodymium Carbonate Hydroxide

Oxygen Vacancy-Originated Inorganic Proton Relay for the Oxygen Evolution Reaction: Fast Proton Hopping via La-Doped Praseodymium Carbonate Hydroxide

Metal-Oxides- and Metal-Oxyhydroxides-Based Nanocomposites for Water Splitting: An Overview

Influence of Er₂O₃ Nanoclusters on Transition Metal Oxide Nanostructures in Water Oxidation

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Rare earth metal (Sm)-doped NiMnO3 nanostructures for highly competent alkaline oxygen evolution reaction

Abstract: In the present work, samarium-doped nickel manganese oxide was produced by employing a straightforward co-precipitation method.

Cited by 31 publications

References 35 publications

Oxygen Vacancy-Originated Inorganic Proton Relay for the Oxygen Evolution Reaction: Fast Proton Hopping via La-Doped Praseodymium Carbonate Hydroxide

Oxygen Vacancy-Originated Inorganic Proton Relay for the Oxygen Evolution Reaction: Fast Proton Hopping via La-Doped Praseodymium Carbonate Hydroxide

Metal-Oxides- and Metal-Oxyhydroxides-Based Nanocomposites for Water Splitting: An Overview

Influence of Er2O3 Nanoclusters on Transition Metal Oxide Nanostructures in Water Oxidation

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Rare earth metal (Sm)-doped NiMnO₃ nanostructures for highly competent alkaline oxygen evolution reaction

Influence of Er₂O₃ Nanoclusters on Transition Metal Oxide Nanostructures in Water Oxidation