Electrocatalytic reduction of oxygen on Co3O4: Effects of processing method

Uskaikar, Harsha P.; Shetti, Nagaraj P.; Malode, Shweta J.

doi:10.1016/j.mset.2018.06.006

Cited by 6 publications

(7 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, octahedra and tetrahedra are limited by the (111) plane, and in our case, coordination of the organic capping agents may have a stabilizing effect, resulting in the preferred (111) termination, as observed for the CoO nanoparticles. Thermal treatment of CoO nanoparticles yielded cube-shaped Co 3 O 4 nanoparticles with (311) and (220) crystal planes, as was previously reported for Co 3 O 4 nanoparticles. , …”

Section: Resultssupporting

confidence: 81%

Effect of the Size and Shape on the Electrocatalytic Activity of Co₃O₄ Nanoparticles in the Oxygen Evolution Reaction

Saddeler

Hagemann²,

Schulz

2020

Inorg. Chem.

View full text Add to dashboard Cite

Co3O4 nanoparticles were size- and shape-selectively synthesized in a solvothermal approach by the thermal decomposition of either cobalt(II) acetylacetonate [Co(acac)2] or cobalt(II) nitrate [Co(NO3)2] in different solvents followed by calcination under air. Spherical, cubic, octahedral, and platelike nanoparticles with narrow size distributions and sizes ranging from 8 to 90 nm were formed in high yield. The nanoparticles were characterized by X-ray diffraction, scanning and transmission electron microscopy, energy-dispersive X-ray analysis, and X-ray photoelectron spectroscopy. The distinctive influence of the size and shape of the nanoparticles on the electrocatalytic activity in the oxygen evolution reaction is also demonstrated.

show abstract

Section: Resultssupporting

confidence: 81%

Effect of the Size and Shape on the Electrocatalytic Activity of Co₃O₄ Nanoparticles in the Oxygen Evolution Reaction

Saddeler

Hagemann²,

Schulz

2020

Inorg. Chem.

View full text Add to dashboard Cite

show abstract

“…Electrodes N(P) and N(G) prepared were dried, sintered and mounted on the nickel mesh and were used for testing in a half cell, and use as working electrode in three electrode assembly. Front side the working electrodes was exposed to the 6M KOH electrolyte and back side there was nickel screen and tubing through which oxygen gas/air was passed to study the oxygen reduction reaction [31,32 ].Steady state current potential curves for the teflon bonded N(P) and N(G) electrodes were obtained by galvanostatic polarization using Hg/HgO, (KOH, mol L -1 ) reference electrode.The counter electrode was a nickel plaque. The catalyst loading was in the range of 7.45 mg/cm 2 .…”

Section: Electrochemical Characterizationmentioning

confidence: 99%

Electrocatalytic Reduction of Cobalt Oxide Spinel for Oxygen Reduction Reaction in Alkaline Media

2024

IJFMR

View full text Add to dashboard Cite

The cathode material were prepared by dispersing Co3O4 on vulcan carbon in situ and manually grinding in pestle and mortar. Co3O4 prepared by hydrazine based combustion method showed nanocrystalline nature. Surface area was found to increase on dispersing Co3O4 on vulcan carbon by manually grinding it in pestle and mortar. The kinetics of the oxygen reduction reaction (ORR) was studied on Co3O4/C electrodes in KOH electrolyte by using cyclic voltammetry and steady state polarization measurements using Hg/HgO as the reference electrode. The morphological features of the electrocatalyst was studied by scanning electron microscopy (SEM), X-ray diffraction (XRD) & BET surface area. The polarization results showed higher electrocatlytic activity for the ORR on Co3O4/C (G) cathode in comparison to Co3O4/C (P) prepared by dispering Co3O4 on a vulcan carbon. Electrocatalytic activity of N(G) & N(P) were compared with Pt/C electrodes.

show abstract

“…Front side the working electrodes was exposed to the 6M KOH electrolyte and back side there was nickel screen and tubing through which oxygen gas/air was passed to study the oxygen reduction reaction [31,32 ].Steady state current potential curves for the te on bonded N(P) and N(G) electrodes were obtained by galvanostatic polarization using Hg/HgO, (KOH, mol L − 1 ) reference electrode.The counter electrode was a nickel plaque. The catalyst loadingwas in the range of 7.45 mg/cm 2 .…”

Section: Materials Synthesismentioning

confidence: 99%

Cobalt oxide spinel electrodes for oxygen reduction reaction in alkaline medium

Uskaikar

2023

Preprint

View full text Add to dashboard Cite

The kinetics of the oxygen reduction reaction (ORR) was studied on Co3O4/C electrodes in KOH electrolyte by using cyclic voltammetry and steady state polarization measurements using the Hg/HgO as the reference electrode. The morphological features of the materials were studied by scanning electron microscopy (SEM), X-ray diffraction (XRD) & BET surface area. The electrodes were prepared by dispersing Co3O4 on vulcan carbon in situ and manually grinding the same. Co3O4 showed nanocrystalline nature and surface area was found to increase on dispersing with vulcan carbon by manually grinding in pestle and mortar. The polarization results showed higher electrocatlytic activity for the ORR on Co3O4/C (G) materials in comparison to Co3O4/C (P) prepared by dispering Co3O4 on a vulcan carbon. Electrocatalytic activity of N(G) & N(P) were compared with Pt/C electrodes.

show abstract

Electrocatalytic reduction of oxygen on Co3O4: Effects of processing method

Cited by 6 publications

References 26 publications

Effect of the Size and Shape on the Electrocatalytic Activity of Co₃O₄ Nanoparticles in the Oxygen Evolution Reaction

Effect of the Size and Shape on the Electrocatalytic Activity of Co₃O₄ Nanoparticles in the Oxygen Evolution Reaction

Electrocatalytic Reduction of Cobalt Oxide Spinel for Oxygen Reduction Reaction in Alkaline Media

Cobalt oxide spinel electrodes for oxygen reduction reaction in alkaline medium

Contact Info

Product

Resources

About

Electrocatalytic reduction of oxygen on Co3O4: Effects of processing method

Cited by 6 publications

References 26 publications

Effect of the Size and Shape on the Electrocatalytic Activity of Co3O4 Nanoparticles in the Oxygen Evolution Reaction

Effect of the Size and Shape on the Electrocatalytic Activity of Co3O4 Nanoparticles in the Oxygen Evolution Reaction

Electrocatalytic Reduction of Cobalt Oxide Spinel for Oxygen Reduction Reaction in Alkaline Media

Cobalt oxide spinel electrodes for oxygen reduction reaction in alkaline medium

Contact Info

Product

Resources

About

Effect of the Size and Shape on the Electrocatalytic Activity of Co₃O₄ Nanoparticles in the Oxygen Evolution Reaction

Effect of the Size and Shape on the Electrocatalytic Activity of Co₃O₄ Nanoparticles in the Oxygen Evolution Reaction