Ni on graphene oxide: a highly active and stable alkaline oxygen evolution catalyst

2021 ◽  
Author(s):  
Holly M. Fruehwald ◽  
Reza B. Moghaddam ◽  
Peter D. Melino ◽  
Iraklii I. Ebralidze ◽  
Olena V. Zenkina ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Oxygen Evolution ◽  
Oxide Nanoparticles ◽  
Reaction Conditions ◽  
Simultaneous Formation ◽  
Highly Active ◽  
Exfoliated Graphene ◽  
Ni Oxide

A novel oxygen evolution catalyst was prepared by reacting NiCl2·6H2O with electrochemically exfoliated graphene oxide (EGO) using mild reaction conditions, leading to the simultaneous formation and deposition of Ni oxide nanoparticles onto EGO.

scholarly journals Exploring Discharged Dry Cell as an Electrocatalyst for Oxygen Evolution Reaction

2018 ◽  
Author(s):  
Esakki Karthik ◽  
sanjit Mondal ◽  
Lipipushpa Sahoo ◽  
Ujjal K. Gautam
Keyword(s):  
Contact Angle ◽  
Graphene Oxide ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Manganese Oxides ◽  
Rechargeable Batteries ◽  
Electrocatalytic Property ◽  
Highly Active ◽  
Ft Ir ◽  
Dry Cell

<p>High oxophilic d-block compounds of dry cell based manganese materials such as MnO2, Mn3O4, and ZnxMn3O4􀀀x have excellent electrocatalytic property in oxygen evolution reaction (OER). To seek a way for disposing these dry cell materials, which are unlike rechargeable batteries, these discharged cells result in environmental hazards. Here we optimized these manganese oxides for an energy related applications, particularly for OER. With this aim, we have examined electrocatalytic behavior of both used and fresh dry cells in OER. We have observed that the used dry cell material exhibited 10 mA. cm􀀀2 at an overpotential of 525 mV but fresh dry cell needed 100 mV higher overpotential to achieve same current density. The nature of these fresh and used materials have been analyzed using XRD, SEM, TGA, Raman spectra, FT-IR and contact angle experiments. The higher activity of used dry cell could be ascribed to the generation of highly active Mn3O4 from MnO2 and graphene oxide while discharging conditions.</p>

Rod-like nickel doped Co3Se4/reduced graphene oxide hybrids as efficient electrocatalysts for oxygen evolution reactions

Nanoscale ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 3698-3708
Author(s):  
Wenlong Ye ◽  
Yanan Zhang ◽  
Jinchen Fan ◽  
Penghui Shi ◽  
Yulin Min ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Active Catalyst ◽  
Highly Active ◽  
Slow Kinetics ◽  
Reduced Graphene ◽  
Kinetics Of

Highly active catalyst of Ni-doped rod-like Co3Se4/reduced graphene oxide was designed for reducing the overpotential and improving the slow kinetics of the process toward electrocatalytic oxygen evolution reaction (OER).

Ultrasmall Ni/NiO Nanoclusters on Thiol-Functionalized and -Exfoliated Graphene Oxide Nanosheets for Durable Oxygen Evolution Reaction

2018 ◽  
Vol 2 (1) ◽  
pp. 363-371 ◽  
Author(s):  
Akhtar Munir ◽  
Tanveer ul Haq ◽  
Ahsanulhaq Qurashi ◽  
Habib ur Rehman ◽  
Anwar Ul-Hamid ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Graphene Oxide Nanosheets ◽  
Exfoliated Graphene

An optimized mild reduction route towards excellent cobalt–graphene catalysts for water oxidation

RSC Advances ◽  
2015 ◽  
Vol 5 (80) ◽  
pp. 64858-64864 ◽  
Author(s):  
Doungkamon Phihusut ◽  
Joey D. Ocon ◽  
Jae Kwang Lee ◽  
Jaeyoung Lee
Keyword(s):  
Graphene Oxide ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Reduction Condition ◽  
Highly Active ◽  
Mild Reduction

A highly active and stable cobalt–graphene electrocatalyst for oxygen evolution reaction (OER) is produced by optimizing the reduction condition of graphene oxide in terms of temperature and time.

High-performance water oxidation catalysts based on the spontaneous deposition of ruthenium on electrochemically exfoliated graphene oxide

2019 ◽  
Vol 9 (23) ◽  
pp. 6547-6551 ◽  
Author(s):  
Holly M. Fruehwald ◽  
Reza B. Moghaddam ◽  
Olena V. Zenkina ◽  
E. Bradley Easton
Keyword(s):  
Graphene Oxide ◽  
Water Oxidation ◽  
Oxidation Reaction ◽  
High Performance ◽  
Oxidation Catalysts ◽  
Spontaneous Deposition ◽  
Highly Active ◽  
Exfoliated Graphene

Sustainable highly active water oxidation reaction in acid over ruthenium loaded electrochemically exfoliated graphene oxide.

Exploring Discharged Dry Cell as an Electrocatalyst for Oxygen Evolution Reaction

2018 ◽  
Author(s):  
Esakki Karthik ◽  
sanjit Mondal ◽  
Lipipushpa Sahoo ◽  
Ujjal K. Gautam
Keyword(s):  
Contact Angle ◽  
Graphene Oxide ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Manganese Oxides ◽  
Rechargeable Batteries ◽  
Electrocatalytic Property ◽  
Highly Active ◽  
Ft Ir ◽  
Dry Cell

<p>High oxophilic d-block compounds of dry cell based manganese materials such as MnO2, Mn3O4, and ZnxMn3O4􀀀x have excellent electrocatalytic property in oxygen evolution reaction (OER). To seek a way for disposing these dry cell materials, which are unlike rechargeable batteries, these discharged cells result in environmental hazards. Here we optimized these manganese oxides for an energy related applications, particularly for OER. With this aim, we have examined electrocatalytic behavior of both used and fresh dry cells in OER. We have observed that the used dry cell material exhibited 10 mA. cm􀀀2 at an overpotential of 525 mV but fresh dry cell needed 100 mV higher overpotential to achieve same current density. The nature of these fresh and used materials have been analyzed using XRD, SEM, TGA, Raman spectra, FT-IR and contact angle experiments. The higher activity of used dry cell could be ascribed to the generation of highly active Mn3O4 from MnO2 and graphene oxide while discharging conditions.</p>

scholarly journals Exploring Discharged Dry Cell as an Electrocatalyst for Oxygen Evolution Reaction

2018 ◽  
Author(s):  
Esakki Karthik
Keyword(s):  
Contact Angle ◽  
Graphene Oxide ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Manganese Oxides ◽  
Rechargeable Batteries ◽  
Electrocatalytic Property ◽  
Highly Active ◽  
Ft Ir ◽  
Dry Cell

<p>High oxophilic d-block compounds of dry cell based manganese materials such as MnO2, Mn3O4, and ZnxMn3O4􀀀x have excellent electrocatalytic property in oxygen evolution reaction (OER). To seek a way for disposing these dry cell materials, which are unlike rechargeable batteries, these discharged cells result in environmental hazards. Here we optimized these manganese oxides for an energy related applications, particularly for OER. With this aim, we have examined electrocatalytic behavior of both used and fresh dry cells in OER. We have observed that the used dry cell material exhibited 10 mA. cm􀀀2 at an overpotential of 525 mV but fresh dry cell needed 100 mV higher overpotential to achieve same current density. The nature of these fresh and used materials have been analyzed using XRD, SEM, TGA, Raman spectra, FT-IR and contact angle experiments. The higher activity of used dry cell could be ascribed to the generation of highly active Mn3O4 from MnO2 and graphene oxide while discharging conditions.</p>

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