Ordered mesoporous Pt-Ru-Ir nanostructures as superior bifunctional electrocatalyst for oxygen reduction/oxygen evolution reactions

Ravichandran, Sabarinathan; Bhuvanendran, Narayanamoorthy; Xu, Qian; Maiyalagan, T.; Lü, Xing; Su, Huaneng

doi:10.1016/j.jcis.2021.09.171

Cited by 33 publications

(11 citation statements)

References 53 publications

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“…2), while the CV curves revealed the existence of the polycrystalline Pt nanostructure in the case of the commercial catalyst. 54 As known, Pt-based catalysts with (111) facets exhibit the highest ORR catalytic activity, indicating that the as-made NiPt NUCs/C catalyst exhibited greater ORR performance than the Pt NPs/C (E-TEK) catalyst. 12,26 Additionally, the potential of Pt-OH formation and Pt-OH reduction on the as-made NiPt NUCs/C catalyst was shifted to a positive potential versus the carbon-supported Pt (NPs) catalyst, implying the formation of a Pt-rich shell on the NiPt alloys, similar to what was reported by Yoo et al 21 This induced a compressive strain on the Pt surface, reducing the binding energy of the oxygenated species on the as-made NiPt NUCs/C catalyst, thereby enhancing the ORR performance.…”

Section: Papermentioning

confidence: 77%

One-pot production of a sea urchin-like alloy electrocatalyst for the oxygen electro-reduction reaction

Pham

Huynh²

2022

Dalton Trans.

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Section: Papermentioning

confidence: 77%

One-pot production of a sea urchin-like alloy electrocatalyst for the oxygen electro-reduction reaction

Pham

Huynh²

2022

Dalton Trans.

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“…Ravichandran et al incorporated the three metals, Pt, Ru, and Ir, into ordered mesoporous Pt 70 Ru 25 Ir 5 nanostructures (OMNs) as a bifunctional catalyst for ORR/OER in acidic environment . The OMNs exhibited a mass activity that was 5-fold higher than the benchmark Pt/C for ORR and an overpotential of 470 mV at 10 mA/cm 2 , which corresponded to an even higher OER activity with that of IrO 2 .…”

Section: Transition Metals In Oxygen Evolution Reaction/oxygen Reduct...mentioning

confidence: 99%

Review and Perspective on Transition Metal Electrocatalysts Toward Carbon-Neutral Energy

et al. 2023

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Decarbonizing the chemical industry and achieving carbon-neutral energy is paramount to the sustainability of the human species on earth. Electrocatalysis using transition metalbased catalysts plays a major role in achieving this task. In this work, we present an overview on the application of transition metal-based catalysts in electrocatalytic reactions. We particularly focus on the advancement of the hydrogen evolution reaction (HER), oxygen evolution reaction (OER), oxygen reduction reaction (ORR), nitrogen reduction reaction (NRR), and carbon dioxide reduction reaction (CO 2 RR) using transition metal electrocatalysts. We also aim to highlight the major achievements in these fields and the limitations in their large-scale industrial applications. Different transition metal catalysts are discussed, from 3-dimensional to 1-to 0-dimensional structures. We place special attention to the emerging transition metal catalysts such as 2dimensional carbide and nitride MXenes and single atom catalysts. Lastly, we offer recommendation for future research directions for the aforementioned electrocatalysis fields using transition metal electrocatalysts. This work will ultimately help both existing and incoming researchers in these fields in providing the state-of-the-art research findings and identifying the major challenges that must be addressed in order to attain carbon-neutral energy.

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“…When increasing the rotation speed from 400 rpm to 1600 rpm, the diffusion current densities increased, while the onset potential was unchanged. To estimate the electron transfer number per O 2 molecule during the ORR by the Koutecky-Levich equation, as follows [59]:…”

Section: Xps Analysismentioning

confidence: 99%

Enhanced Electrocatalytic Activity of Cobalt-Doped Ceria Embedded on Nitrogen, Sulfur-Doped Reduced Graphene Oxide as an Electrocatalyst for Oxygen Reduction Reaction

et al. 2021

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N, S-doped rGO was successfully synthesized and embedded Co-doped CeO2 via hydrothermal synthesis. The crystal structure, surface morphology and elemental composition of the prepared catalyst were studied by XRD, Raman spectra, SEM, TEM and XPS analyses. The synthesized electrocatalyst exhibits high onset and halfwave potential during the ORR. This result shows that a combination of N- and S-doped rGO and Co-doped CeO2 leads to a synergistic effect in catalyzing the ORR in alkaline media. Co–CeO2/N, S–rGO displays enhanced ORR performance compared to bare CeO2. The superior stability of the prepared catalyst implies its potential applications beyond fuel cells and metal–air batteries.

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Ordered mesoporous Pt-Ru-Ir nanostructures as superior bifunctional electrocatalyst for oxygen reduction/oxygen evolution reactions

Cited by 33 publications

References 53 publications

One-pot production of a sea urchin-like alloy electrocatalyst for the oxygen electro-reduction reaction

One-pot production of a sea urchin-like alloy electrocatalyst for the oxygen electro-reduction reaction

Review and Perspective on Transition Metal Electrocatalysts Toward Carbon-Neutral Energy

Enhanced Electrocatalytic Activity of Cobalt-Doped Ceria Embedded on Nitrogen, Sulfur-Doped Reduced Graphene Oxide as an Electrocatalyst for Oxygen Reduction Reaction

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