scholarly journals Small Reduced Graphene Oxides for Highly Efficient Oxygen Reduction Catalysts

2021 ◽  
Vol 22 (22) ◽  
pp. 12300
Author(s):  
Su-Jeong Bak ◽  
Sun-I Kim ◽  
Su-yeong Lim ◽  
Taehyo Kim ◽  
Se-Hun Kwon ◽  
...  
Keyword(s):  
Oxygen Reduction ◽  
Pt Nanoparticles ◽  
Graphene Oxides ◽  
Highly Efficient ◽  
Surface Areas ◽  
Reduced Graphene ◽  
High Metal ◽  
Oxygen Reduction Catalysts ◽  
Reduced Graphene Oxides ◽  
Reduction Catalysts

We demonstrated highly efficient oxygen reduction catalysts composed of uniform Pt nanoparticles on small, reduced graphene oxides (srGO). The reduced graphene oxide (rGO) size was controlled by applying ultrasonication, and the resultant srGO enabled the morphological control of the Pt nanoparticles. The prepared catalysts provided efficient surface reactions and exhibited large surface areas and high metal dispersions. The resulting Pt/srGO samples exhibited excellent oxygen reduction performance and high stability over 1000 cycles of accelerated durability tests, especially the sample treated with 2 h of sonication. Detailed investigations of the structural and electrochemical properties of the resulting catalysts suggested that both the chemical functionality and electrical conductivity of these samples greatly influence their enhanced oxygen reduction efficiency.

Chitosan cross-linked poly(aminoanthraquinone)/Prussian blue ternary nitrogen precursor-derived Fe–N–C oxygen reduction catalysts for microbial fuel cells and zinc–air batteries

2020 ◽  
Vol 8 (18) ◽  
pp. 9256-9267 ◽  
Author(s):  
Guoquan Zhang ◽  
Li Li ◽  
Mengyao Chen ◽  
Fenglin Yang
Keyword(s):  
Fuel Cells ◽  
Prussian Blue ◽  
Oxygen Reduction ◽  
Microbial Fuel Cells ◽  
Highly Efficient ◽  
Oxygen Reduction Catalysts ◽  
Orr Activity ◽  
Reduction Catalysts ◽  
Zinc Air Batteries

A chitosan cross-linked poly(1,5-diaminoanthraquinone)/Prussian blue (PDAA/PB) ternary nitrogen precursor-derived Fe–N–C/800-HT2 catalyst shows highly efficient ORR activity for MFCs and Zn–air batteries.

Is reduced graphene oxide favorable for nonprecious metal oxygen-reduction catalysts?

Carbon ◽  
2016 ◽  
Vol 102 ◽  
pp. 346-356 ◽  
Author(s):  
Wei Gao ◽  
Dana Havas ◽  
Shiva Gupta ◽  
Qin Pan ◽  
Nanfei He ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Oxygen Reduction ◽  
Reduced Graphene Oxide ◽  
Reduced Graphene ◽  
Oxygen Reduction Catalysts ◽  
Reduction Catalysts ◽  
Nonprecious Metal

Ionic liquid derived carbons as highly efficient oxygen reduction catalysts: first elucidation of pore size distribution dependent kinetics

2014 ◽  
Vol 50 (12) ◽  
pp. 1469-1471 ◽  
Author(s):  
Zhiyong Zhang ◽  
Gabriel M. Veith ◽  
Gilbert M. Brown ◽  
Pasquale F. Fulvio ◽  
Patrick C. Hillesheim ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Oxygen Reduction Reaction ◽  
Pore Size Distribution ◽  
Pore Size ◽  
Oxygen Reduction ◽  
Size Distribution ◽  
Reduction Reaction ◽  
Highly Efficient ◽  
Oxygen Reduction Catalysts ◽  
Reduction Catalysts

Pore size distribution in ionic liquid derived N-doped carbons affects both activity and kinetics in the oxygen reduction reaction.

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