Articles with "orr activity" as a keyword



Manganese deception on graphene and implications in catalysis.

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Published in 2018 at "Carbon"

DOI: 10.1016/j.carbon.2018.02.082

Abstract: Heteroatom-doped metal-free graphene has been widely studied as the catalyst for the oxygen reduction reaction (ORR). Depending on the preparation method and the dopants, the ORR activity varies ranging from a two-electron to a four-electron… read more here.

Keywords: orr activity; graphene; deception graphene; free graphene ... See more keywords
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Potentiostatic regeneration of oxygen reduction activity in MnOx @ graphene hybrid nanostructures

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Published in 2019 at "Electrochimica Acta"

DOI: 10.1016/j.electacta.2019.134947

Abstract: Abstract The oxygen reduction reaction (ORR) activity for Manganese oxide (MnOx) based nanostructures primarily depend upon their morphology, phase and surface Mn valency. While used in fuel cells or metal air batteries, MnOx undergoes irreversible… read more here.

Keywords: orr activity; step; regeneration; activity ... See more keywords
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How key characteristics of carbon materials influence the ORR activity of LaMnO3- and Mn3O4-carbon composites prepared by in situ autocombustion method

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Published in 2020 at "Electrochimica Acta"

DOI: 10.1016/j.electacta.2020.136557

Abstract: Abstract In this work we studied the effect of carbon in LaMnO3- and Mn3O4- carbon composites synthesized through the In Situ Auto Combustion (ISAC) route for the Oxygen Reduction Reaction (ORR). For this study, we… read more here.

Keywords: carbon; orr activity; carbon materials; carbon composites ... See more keywords
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Electrochemical behavior of titanium oxide nanoparticles for oxygen reduction reaction environment in PEM fuel cells

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Published in 2018 at "Materials Today Energy"

DOI: 10.1016/j.mtener.2018.05.015

Abstract: Abstract In this work, the oxygen reduction reaction (ORR) activity of titanium dioxide nanoparticles (TiO2-NPs) with different particle sizes is investigated in the acidic environment. The microstructures of the TiO2-NPs are characterized by transmission electron… read more here.

Keywords: microscopy; orr activity; tio2 nps; reduction reaction ... See more keywords
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Activation of Oxygen Reduction Reaction on Well-Defined Pt Electrocatalysts in Alkaline Media Containing Hydrophobic Organic Cations

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Published in 2019 at "ACS Applied Energy Materials"

DOI: 10.1021/acsaem.9b00582

Abstract: The activity of the oxygen reduction reaction (ORR) is significantly affected by the nonspecifically adsorbed ions at the electrode/electrolyte interface as well as the surface structures of the catalytic substrate. In this study, we found… read more here.

Keywords: oxygen reduction; activity; orr activity; alkaline media ... See more keywords
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Programming ORR Activity of Ni/NiOx@Pd Electrocatalysts via Controlling Depth of Surface-Decorated Atomic Pt Clusters

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Published in 2018 at "ACS Omega"

DOI: 10.1021/acsomega.8b01234

Abstract: Carbon nanotube supported ternary metallic nanocatalysts (NCs) comprising Nicore–Pdshell structure and Pt atomic scale clusters in shell (namely, Ni@Pd/Pt) are synthesized by using wet chemical reduction method with reaction time control. Effects of Pt4+ adsorption… read more here.

Keywords: orr activity; surface; activity; adsorption time ... See more keywords
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Unusual enhancement in the electroreduction of oxygen by NiCoPt by surface tunability through potential cycling

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Published in 2017 at "RSC Advances"

DOI: 10.1039/c6ra27611c

Abstract: Chemically ordered interconnected nanostructures of NiCoPt alloy have been prepared using a simple solvothermal process and studied for oxygen reduction reaction (ORR) kinetics. NiCoPt/C catalyst has demonstrated an interesting trend of enhancement in the ORR… read more here.

Keywords: oxygen; potential cycling; orr activity; durability ... See more keywords
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An attempt to confirm the contribution to ORR activity of different N-species in M-NC (M = Fe, Co, Ni) catalysts with XPS analysis.

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Published in 2023 at "Chemical communications"

DOI: 10.1039/d2cc06375a

Abstract: M-NC catalysts were prepared by a combination of the electrospinning method and thermal treatment. For the first time, the contribution of N-species to the ORR (oxygen reduction reaction) of the M-NC was analysed using XPS… read more here.

Keywords: contribution orr; contribution; confirm contribution; activity different ... See more keywords