Pt-Oxide Coverage-Dependent Oxygen Reduction Reaction (ORR) Kinetics

2019 ◽  
Vol 41 (1) ◽  
pp. 985-1007 ◽  
Author(s):  
Nalini P. Subramanian ◽  
Thomas Greszler ◽  
Junliang Zhang ◽  
Wenbin Gu ◽  
Rohit R. Makharia
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Orr Kinetics

Pt-Oxide Coverage-Dependent Oxygen Reduction Reaction (ORR) Kinetics

2012 ◽  
Vol 159 (5) ◽  
pp. B531-B540 ◽  
Author(s):  
N. P. Subramanian ◽  
T. A. Greszler ◽  
J. Zhang ◽  
W. Gu ◽  
R. Makharia
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Orr Kinetics

In situ synthesis of Co-B-doped porous carbon through laser thermal reduction for the efficient oxygen reduction reaction

2021 ◽  
Author(s):  
JunBo Liu ◽  
Wenzhuo Zhang ◽  
GuangYi Chen ◽  
Shengyang Tao
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Cost Effective ◽  
Thermal Reduction ◽  
Reduction Reaction ◽  
In Situ Synthesis ◽  
Noble Metal Catalysts ◽  
Cathode Reaction ◽  
Orr Kinetics

The oxygen reduction reaction (ORR) is a significant cathode reaction for fuel cells in sustainable energy-conversion applications. The ORR kinetics is slow. Developing cost-effective and highly efficient no-noble-metal catalysts to...

Implications of boron doping on electrocatalytic activities of graphyne and graphdiyne families: a first principles study

2016 ◽  
Vol 18 (4) ◽  
pp. 2949-2958 ◽  
Author(s):  
Bikram Kumar Das ◽  
Dipayan Sen ◽  
K. K. Chattopadhyay
Keyword(s):  
Density Functional Theory ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
First Principles ◽  
Density Functional ◽  
Boron Doping ◽  
Reduction Reaction ◽  
Functional Theory ◽  
Orr Kinetics ◽  
Kinetics Of

Dispersive force corrected density functional theory is used to map the oxygen reduction reaction (ORR) kinetics of six kinds of graphyne (Gy) and graphdiyne (Gdy) systems (namely αGy, βGy, γGy, δGy, 6,6,12Gy, RGy and Gdy) with substitutional boron (B) atom doping.

scholarly journals Optimization Strategies of Preparation of Biomass-Derived Carbon Electrocatalyst for Boosting Oxygen Reduction Reaction: A Minireview

Catalysts ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1472
Author(s):  
Minhua Jiang ◽  
Xiaofang Yu ◽  
Haoqi Yang ◽  
Shuiliang Chen
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
High Performance ◽  
Scale Up ◽  
Chemical Properties ◽  
Cost Effective ◽  
Clean Energy ◽  
Reduction Reaction ◽  
Orr Kinetics ◽  
Conversion Technologies

Oxygen reduction reaction (ORR) has attracted considerable attention for clean energy conversion technologies to reduce traditional fossil fuel consumption and greenhouse gas emissions. Although platinum (Pt) metal is currently used as an electrocatalyst to accelerate sluggish ORR kinetics, the scarce resource and high cost still restrict its further scale-up applications. In this regard, biomass-derived carbon electrocatalysts have been widely adopted for ORR electrocatalysis in recent years owing to their tunable physical/chemical properties and cost-effective precursors. In this minireview, recent advances of the optimization strategies in biomass-derived carbon electrocatalysts towards ORR have been summarized, mainly focusing on the optimization of pore structure and active site. Besides, some current challenges and future perspectives of biomass-derived carbon as high-performance electrocatalysts for ORR have been also discussed in detail. Hopefully, this minireview will afford a guideline for better design of biomass-derived carbon electrocatalysts for ORR-related applications.

scholarly journals Pt monolayer shell on hollow Pd core electrocatalysts: Scale up synthesis, structure, and activity for the oxygen reduction reaction

2013 ◽  
Vol 78 (12) ◽  
pp. 1983-1992 ◽  
Author(s):  
Miomir Vukmirovic ◽  
Zhang Yu ◽  
Jia Wang ◽  
David Buceta ◽  
Lijun Wu ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Scale Up ◽  
Rotating Disk ◽  
Reduction Reaction ◽  
Rotating Disk Electrode ◽  
Lattice Contraction ◽  
Hollow Nanoparticles ◽  
Orr Kinetics ◽  
Kinetics Of

We report on synthesis, characterization and the oxygen reduction reaction (ORR) kinetics of Pt monolayer shell on Pd(hollow), or Pd-Au(hollow) core electrocatalysts. Comparison between the ORR catalytic activity of the electrocatalysts with hollow cores and those of Pt solid and Pt hollow nanoparticles has been obtained using the rotating disk electrode technique. Hollow nanoparticles were made using Ni or Cu nanoparticles as sacrificial templates. The Pt ORR specific and mass activities of the electrocatalysts with hollow cores were found considerably higher than those of the electrocatalysts with the solid cores. We attribute this enhanced Pt activity to the smooth surface morphology and hollow-induced lattice contraction, in addition to the mass-saving geometry of hollow particles.

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