Bio-inspired multinuclear copper complexes covalently immobilized on reduced graphene oxide as efficient electrocatalysts for the oxygen reduction reaction

2015 ◽  
Vol 51 (35) ◽  
pp. 7455-7458 ◽  
Author(s):  
Yue-Ting Xi ◽  
Ping-Jie Wei ◽  
Ru-Chun Wang ◽  
Jin-Gang Liu
Keyword(s):  
Graphene Oxide ◽  
Oxygen Reduction Reaction ◽  
Copper Complex ◽  
Copper Complexes ◽  
Reduction Reaction ◽  
Alkaline Media ◽  
Long Term Stability ◽  
Reduced Graphene ◽  
Orr Activity

A bio-inspired multinuclear copper complex covalently immobilized on graphene exhibited high ORR activity and long-term stability in alkaline media.

scholarly journals Highly active and stable AuNi dendrites as an electrocatalyst for the oxygen reduction reaction in alkaline media

2016 ◽  
Vol 4 (45) ◽  
pp. 17828-17837 ◽  
Author(s):  
Jiali Wang ◽  
Fuyi Chen ◽  
Yachao Jin ◽  
Roy L. Johnston
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Alkaline Media ◽  
Term Stability ◽  
Long Term Stability ◽  
Highly Active ◽  
Orr Activity

AuNi hierarchical dendrites were fabricated by a facile electrodeposition and dealloying method with exceptional ORR activity and remarkable long-term stability.

Co3O4 Nanoparticles-Modified α-MnO2 Nanorods Supported on Reduced Graphene Oxide as Cathode Catalyst for Oxygen Reduction Reaction in Alkaline Media

NANO ◽  
2016 ◽  
Vol 11 (11) ◽  
pp. 1650126 ◽  
Author(s):  
GuanHua Jin ◽  
Suqin Liu ◽  
Yaomin Li ◽  
Yang Guo ◽  
Zhiying Ding
Keyword(s):  
Electron Microscopy ◽  
Graphene Oxide ◽  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduced Graphene Oxide ◽  
Reduction Reaction ◽  
Alkaline Media ◽  
X Ray ◽  
Reduced Graphene

Development of efficient electrocatalysts for the oxygen reduction reaction (ORR) remains a key issue for the commercialization of metal-air batteries. In this study, the novel structured Co3O4 nanoparticles-modified [Formula: see text]-MnO2 nanorods supported on reduced graphene oxide (Co3O4-MnO2/rGO) were synthesized with varying amounts of [Formula: see text]-MnO2 via a facile two-step hydrothermal method. The relationship between the physical properties and the electrochemical results was investigated using X-ray diffraction spectrum, scanning electron microscopy, transmission electron microscopy, Raman spectroscopy, X-ray photoelectron spectroscopy, cyclic voltammograms, electrochemical impedance spectroscopy and rotating disk electrode. The as-prepared Co3O4–MnO2 nanohybrid exhibits enhanced catalytic activity for ORR under alkaline condition compared with MnO2/rGO and Co3O4/rGO. Furthermore, it mainly favors a direct 4e-reaction pathway for ORR, which is attributed to the well-designed structure, the synergistic effect between Co3O4 and [Formula: see text]-MnO2, and the covalent coupling between the Co3O4-MnO2 and reduced graphene oxide. The role of Co3O4 in Co3O4–MnO2 hybrid for catalyzing ORR also has been illustrated by varying the mass ratio of Co3O4 and MnO2, which reveals that the Co3O4–MnO2 with the ratio of 1:1 has better catalytic activity.

scholarly journals Hydrated FePO4 nanoparticles supported on P-doped RGO show enhanced ORR activity compared to their dehydrated form in an alkaline medium

RSC Advances ◽  
2019 ◽  
Vol 9 (42) ◽  
pp. 24654-24658 ◽  
Author(s):  
Zubair Ahmed ◽  
Ritu Rai ◽  
Rajinder Kumar ◽  
Takahiro Maruyama ◽  
Vivek Bagchi
Keyword(s):  
Graphene Oxide ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduced Graphene Oxide ◽  
Alkaline Medium ◽  
Reduction Reaction ◽  
Hydrothermal Growth ◽  
Reduced Graphene ◽  
One Step ◽  
Orr Activity

One-step hydrothermal growth of FePO4 nanoparticles (15–25 nm) uniformly decorated on the P-doped reduced graphene oxide (PRGO) was studied for oxygen reduction reaction (ORR) activity.

Enhancing the oxygen reduction reaction with three-dimensional graphene hollow nanosphere supported single-atomic cobalt catalyst

2020 ◽  
Vol 7 (18) ◽  
pp. 3475-3481
Author(s):  
Ji-Sen Li ◽  
Meng-Jie Huang ◽  
Xiao-Nan Chen
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Cobalt Catalyst ◽  
Three Dimensional ◽  
Reduction Reaction ◽  
Alkaline Media ◽  
Hollow Nanosphere ◽  
Methanol Tolerance ◽  
Long Term Stability

Three-dimensional graphene hollow nanospheres supported single-atomic cobalt catalyst shows superior electrocatalytic activity, long-term stability, and excellent methanol tolerance for the oxygen reduction reaction in alkaline media.

scholarly journals Fabrication of polyoxometalate-modified palladium–nickel/reduced graphene oxide alloy catalysts for enhanced oxygen reduction reaction activity

RSC Advances ◽  
2021 ◽  
Vol 11 (62) ◽  
pp. 39118-39129
Author(s):  
Fereshteh Dehghani Sanij ◽  
Prabhuraj Balakrishnan ◽  
Huaneng Su ◽  
Lindiwe Khotseng ◽  
Qian Xu
Keyword(s):  
Graphene Oxide ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduced Graphene Oxide ◽  
Reduction Reaction ◽  
Alkaline Media ◽  
Oxygen Reduction Reaction Activity ◽  
Reduced Graphene ◽  
Alloy Catalysts

A novel nanocatalyst, polyoxometalate-modified palladium–nickel/reduced graphene oxide (Pd8Ni2/rGO-POM), is prepared and served as an effective ORR nanomaterial in alkaline media.

A three-dimensional Mn3O4 network supported on a nitrogenated graphene electrocatalyst for efficient oxygen reduction reaction in alkaline media

2014 ◽  
Vol 2 (35) ◽  
pp. 14493-14501 ◽  
Author(s):  
Santosh Kumar Bikkarolla ◽  
Fengjiao Yu ◽  
Wuzong Zhou ◽  
Paul Joseph ◽  
Peter Cumpson ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduced Graphene Oxide ◽  
Alkaline Medium ◽  
High Performance ◽  
Three Dimensional ◽  
Reduction Reaction ◽  
Alkaline Media ◽  
Reduced Graphene

A 3D hierarchical Mn3O4 nanoflake structure supported on nitrogenated reduced graphene oxide (NrGO), with excellent oxygen reduction in alkaline medium, was developed by electrodeposition. High performance is attributed to poor nanoflake crystallinity and strong nanoflake–NrGO coupling.

A copper complex covalently grafted on carbon nanotubes and reduced graphene oxide promotes oxygen reduction reaction activity and catalyst stability

RSC Advances ◽  
2015 ◽  
Vol 5 (81) ◽  
pp. 66487-66493 ◽  
Author(s):  
Ru-Chun Wang ◽  
Tian-Liang Yin ◽  
Ping-Jie Wei ◽  
Jin-Gang Liu
Keyword(s):  
Carbon Nanotubes ◽  
Graphene Oxide ◽  
Copper Complex ◽  
Reduction Process ◽  
Reduction Reaction ◽  
Covalent Immobilization ◽  
Catalyst Stability ◽  
Oxygen Reduction Reaction Activity ◽  
Reduced Graphene ◽  
Orr Activity

Covalent immobilization of a copper complex on CNTs or rGO remarkably improves the catalyst ORR activity and stability compared with that of the physisorbed counterparts, and proximal dinuclear Cu sites on flat rGO effectively promote the oxygen 4e− reduction process.

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