Microstructural dependent oxygen reduction reaction in a Ruddlesden–Popper perovskite (SmSr)NiO<sub>4−δ</sub>

Chauhan, Manisha; Jha, Pardeep K.; Bangwal, Ajay S.; Jha, P. C.; Singh, Prabhakar

doi:10.1039/d0cp00433b

“…It is observed that CR is lower for x = 0.6 (B0.0033 mm per year) than that for x = 1.0 (B0.029 mm per year) (insets (a) and (b)). Earlier, 43 we have observed lower CR for the sample x = 1.0, which might be due to the different concentration of analytes. The different CR corresponds to the different passivation mechanism and different thicknesses of protective films developed over the cathode leading to a decrease in peak current.…”

Section: Thin Filmmentioning

confidence: 43%

“…3.3 Catalysis studies 3.3.1 Bulk. In our recent studies, 43 we have observed the effect of microstructures on the triple-phase boundary and the change in the number of electron transfer from 2e À to 4e À in SmSrNiO 4Àd (i.e., x = 1.0) with the sintering temperature from 1250 1C to 1425 1C. The electrocatalysis is believed to be affected with the structure change, and we have studied the electrocatalysis for all the studied samples (see Fig.…”

Section: Thermogravimetric Studiesmentioning

confidence: 98%

Influence of the crystalline phase on the electrocatalytic behaviour of Sm_2−xSr_xNiO_4−δ (x = 0.4 to 1.0) Ruddlesden–Popper-based systems: a comparative study of bulk and thin electrocatalysts

Chauhan

¹

,

Jha

²

,

Jha

³

et al. 2022

Phys. Chem. Chem. Phys.

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Unlocking Catalytic Potential: Exploring the Impact of Thermal Treatment on Enhanced Electrocatalysis of Nanomaterials

Kogularasu,

Lee,

Sriram

et al. 2023

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In the evolving field of electrocatalysis, thermal treatment of nano‐electrocatalysts has become an essential strategy for performance enhancement. This review systematically investigates the impact of various thermal treatments on the catalytic potential of nano‐electrocatalysts. The focus encompasses an in‐depth analysis of the changes induced in structural, morphological, and compositional properties, as well as alterations in electro‐active surface area, surface chemistry, and crystal defects. By providing a comprehensive comparison of commonly used thermal techniques, such as annealing, calcination, sintering, pyrolysis, hydrothermal, and solvothermal methods, this review serves as a scientific guide for selecting the right thermal technique and favorable temperature to tailor the nano‐electrocatalysts for optimal electrocatalysis. The resultant modifications in catalytic activity are explored across key electrochemical reactions such as electrochemical (bio)sensing, catalytic degradation, oxygen reduction reaction, hydrogen evolution reaction, overall water splitting, fuel cells, and carbon dioxide reduction reaction. Through a detailed examination of the underlying mechanisms and synergistic effects, this review contributes to a fundamental understanding of the role of thermal treatments in enhancing electrocatalytic properties. The insights provided offer a roadmap for future research aimed at optimizing the electrocatalytic performance of nanomaterials, fostering the development of next‐generation sensors and energy conversion technologies.

show abstract

Unlocking Catalytic Potential: Exploring the Impact of Thermal Treatment on Enhanced Electrocatalysis of Nanomaterials

Kogularasu,

Lee,

Sriram

et al. 2023

View full text Add to dashboard Cite

In the evolving field of electrocatalysis, thermal treatment of nano‐electrocatalysts has become an essential strategy for performance enhancement. This review systematically investigates the impact of various thermal treatments on the catalytic potential of nano‐electrocatalysts. The focus encompasses an in‐depth analysis of the changes induced in structural, morphological, and compositional properties, as well as alterations in electro‐active surface area, surface chemistry, and crystal defects. By providing a comprehensive comparison of commonly used thermal techniques, such as annealing, calcination, sintering, pyrolysis, hydrothermal, and solvothermal methods, this review serves as a scientific guide for selecting the right thermal technique and favorable temperature to tailor the nano‐electrocatalysts for optimal electrocatalysis. The resultant modifications in catalytic activity are explored across key electrochemical reactions such as electrochemical (bio)sensing, catalytic degradation, oxygen reduction reaction, hydrogen evolution reaction, overall water splitting, fuel cells, and carbon dioxide reduction reaction. Through a detailed examination of the underlying mechanisms and synergistic effects, this review contributes to a fundamental understanding of the role of thermal treatments in enhancing electrocatalytic properties. The insights provided offer a roadmap for future research aimed at optimizing the electrocatalytic performance of nanomaterials, fostering the development of next‐generation sensors and energy conversion technologies.

show abstract

Microstructural dependent oxygen reduction reaction in a Ruddlesden–Popper perovskite (SmSr)NiO_4−δ

Abstract: Alteration in conduction pathways through Microstructural difference:Microstructural designing for Ruddlesen–Popper structured layered perovskite, (SmSr)NiO4−δ.

Cited by 9 publications

References 27 publications

Influence of the crystalline phase on the electrocatalytic behaviour of Sm_2−xSr_xNiO_4−δ (x = 0.4 to 1.0) Ruddlesden–Popper-based systems: a comparative study of bulk and thin electrocatalysts

Influence of the crystalline phase on the electrocatalytic behaviour of Sm_2−xSr_xNiO_4−δ (x = 0.4 to 1.0) Ruddlesden–Popper-based systems: a comparative study of bulk and thin electrocatalysts

Unlocking Catalytic Potential: Exploring the Impact of Thermal Treatment on Enhanced Electrocatalysis of Nanomaterials

Unlocking Catalytic Potential: Exploring the Impact of Thermal Treatment on Enhanced Electrocatalysis of Nanomaterials

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Microstructural dependent oxygen reduction reaction in a Ruddlesden–Popper perovskite (SmSr)NiO4−δ

Abstract: Alteration in conduction pathways through Microstructural difference:Microstructural designing for Ruddlesen–Popper structured layered perovskite, (SmSr)NiO4−δ.

Cited by 9 publications

References 27 publications

Influence of the crystalline phase on the electrocatalytic behaviour of Sm2−xSrxNiO4−δ (x = 0.4 to 1.0) Ruddlesden–Popper-based systems: a comparative study of bulk and thin electrocatalysts

Influence of the crystalline phase on the electrocatalytic behaviour of Sm2−xSrxNiO4−δ (x = 0.4 to 1.0) Ruddlesden–Popper-based systems: a comparative study of bulk and thin electrocatalysts

Unlocking Catalytic Potential: Exploring the Impact of Thermal Treatment on Enhanced Electrocatalysis of Nanomaterials

Unlocking Catalytic Potential: Exploring the Impact of Thermal Treatment on Enhanced Electrocatalysis of Nanomaterials

Contact Info

Product

Resources

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Microstructural dependent oxygen reduction reaction in a Ruddlesden–Popper perovskite (SmSr)NiO_4−δ

Influence of the crystalline phase on the electrocatalytic behaviour of Sm_2−xSr_xNiO_4−δ (x = 0.4 to 1.0) Ruddlesden–Popper-based systems: a comparative study of bulk and thin electrocatalysts

Influence of the crystalline phase on the electrocatalytic behaviour of Sm_2−xSr_xNiO_4−δ (x = 0.4 to 1.0) Ruddlesden–Popper-based systems: a comparative study of bulk and thin electrocatalysts