Generation of OH radicals in oxygen reduction reaction at Pt–Co nanoparticles supported on graphene in alkaline solutions

2010 ◽  
Vol 46 (19) ◽  
pp. 3369 ◽  
Author(s):  
Qiaoli Yue ◽  
Ke Zhang ◽  
Xiumei Chen ◽  
Lei Wang ◽  
Jinsheng Zhao ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Alkaline Solutions ◽  
Oh Radicals ◽  
Co Nanoparticles

Lattice-compressed and N-doped Co nanoparticles to boost oxygen reduction reaction for zinc-air batteries

2020 ◽  
Vol 525 ◽  
pp. 146491 ◽  
Author(s):  
Peng Rao ◽  
Li Yang ◽  
Xiaopeng Wang ◽  
Peng Cui ◽  
Yun Wang ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Co Nanoparticles ◽  
Zinc Air Batteries

Highly dispersed Co nanoparticles decorated on a N-doped defective carbon nano-framework for a hybrid Na–air battery

2020 ◽  
Vol 49 (6) ◽  
pp. 1811-1821 ◽  
Author(s):  
Jingyi Zhu ◽  
Tao Qu ◽  
Fengmei Su ◽  
Yuqi Wu ◽  
Yao Kang ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Energy Conversion ◽  
Oxygen Reduction ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Low Cost ◽  
Reduction Reaction ◽  
Highly Dispersed ◽  
Air Battery ◽  
Co Nanoparticles

Efficient and low-cost bifunctional electrocatalysts for the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER) are of vital importance in energy conversion.

scholarly journals Polyacrylamide Microspheres-Derived Fe3C@N-doped Carbon Nanospheres as Efficient Catalyst for Oxygen Reduction Reaction

Polymers ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 767 ◽  
Author(s):  
Ming Chen ◽  
Yu Jiang ◽  
Ping Mei ◽  
Yan Zhang ◽  
Xianfeng Zheng ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Electrocatalytic Activity ◽  
Active Sites ◽  
Reduction Reaction ◽  
Limiting Current ◽  
Alkaline Solutions ◽  
Carbon Nanospheres ◽  
Hydrogen Electrode ◽  
Efficient Catalyst

High-performance non-precious metal catalysts exhibit high electrocatalytic activity for the oxygen-reduction reaction (ORR), which is indispensable for facilitating the development of multifarious renewable energy systems. In this work; N-doped carbon-encapsulated Fe3C nanosphere ORR catalysts were prepared through simple carbonization of iron precursors loaded with polyacrylamide microspheres. The effect of iron precursors loading on the electrocatalytic activity for ORR was investigated in detail. The electrochemical measurements revealed that the N-doped carbon-encapsulated Fe3C nanospheres exhibited outstanding electrocatalytic activity for ORR in alkaline solutions. The optimized catalyst possessed more positive onset potential (0.94 V vs. reversible hydrogen electrode (RHE)), higher diffusion limiting current (5.78 mA cm−2), better selectivity (the transferred electron number n > 3.98 at 0.19 V vs. RHE) and higher durability towards ORR than a commercial Pt/C catalyst. The efficient electrocatalytic performance towards ORR can be attributed to the synergistic effect between N-doped carbon and Fe3C as catalytic active sites; and the excellent stability results from the core-shell structure of the catalysts.

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