Stabilization and compressive strain effect of AuCu core on Pt shell for oxygen reduction reaction

2012 ◽  
Vol 5 (10) ◽  
pp. 8976 ◽  
Author(s):  
Jinhua Yang ◽  
Xiaojun Chen ◽  
Xianfeng Yang ◽  
Jackie Y. Ying
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Compressive Strain ◽  
Reduction Reaction ◽  
Strain Effect

Oxygen Reduction Reaction over PtFeM (M = Mo, V, W) Alloy Electrocatalysts: Role of the Compressive Strain Effect on Pt

2019 ◽  
Vol 7 (19) ◽  
pp. 16209-16214 ◽  
Author(s):  
Jiajia Lu ◽  
Lin Luo ◽  
Shibin Yin ◽  
Syed Waqar Hasan ◽  
Panagiotis Tsiakaras
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Compressive Strain ◽  
Reduction Reaction ◽  
Strain Effect

scholarly journals Unusual strain effect of a Pt-based L10 face-centered tetragonal core in core/shell nanoparticles for the oxygen reduction reaction

2019 ◽  
Vol 21 (12) ◽  
pp. 6477-6484 ◽  
Author(s):  
Mingjie Liu ◽  
Huolin Xin ◽  
Qin Wu
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Low Cost ◽  
Reduction Reaction ◽  
Strain Effect ◽  
Shell Nanoparticles ◽  
The Core ◽  
Unusual Strain ◽  
Face Centered ◽  
Core Shell Nanoparticles

Nanoparticles with a low-Pt content core and a few-layer thick Pt skin are attractive catalysts toward the oxygen reduction reaction (ORR) not only for their low cost, but also because their activity can be enhanced by judiciously choosing the core alloy.

Lattice-strained palladium nanoparticles as active catalysts for the oxygen reduction reaction

2019 ◽  
Vol 55 (21) ◽  
pp. 3121-3123 ◽  
Author(s):  
Jing-Yang Lin ◽  
Cong Xi ◽  
Zhe Li ◽  
Yi Feng ◽  
De-Yao Wu ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Palladium Nanoparticles ◽  
Compressive Strain ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Catalytic Performance ◽  
Reduction Reaction ◽  
Dramatic Improvement

Compressive strain was successfully introduced into palladium nanoparticles by a novel pulsed laser ablation technology, leading to dramatic improvement of the catalytic performance in the oxygen reduction reaction.

Theoretical study of the strain effect on the oxygen reduction reaction activity and stability of FeNC catalyst

2020 ◽  
Vol 44 (17) ◽  
pp. 6818-6824 ◽  
Author(s):  
Xiaoming Zhang ◽  
Zhangxun Xia ◽  
Huanqiao Li ◽  
Shansheng Yu ◽  
Suli Wang ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Theoretical Study ◽  
Reduction Reaction ◽  
Strain Effect ◽  
Oxygen Reduction Reaction Activity ◽  
Cu Substrate

The oxygen reduction performance of Cu@FeNC (1.9%-FeNC) is different from the corresponding 2%-FeNC, mainly due to the coordination between the Cu substrate and Fe atom.

N and S Co-doped Ordered Mesoporous Carbon: An Efficient Electrocatalyst for Oxygen Reduction Reaction in Microbial Fuel Cells

2020 ◽  
Vol 16 (4) ◽  
pp. 625-638
Author(s):  
Leila Samiee ◽  
Sedigheh Sadegh Hassani
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Microbial Fuel Cells ◽  
Carbon Materials ◽  
Reduction Reaction ◽  
Carbon Substrate ◽  
Promising Candidate ◽  
X Ray ◽  
Carbon Framework ◽  
Co Doped

Background: Porous carbon materials are promising candidate supports for various applications. In a number of these applications, doping of the carbon framework with heteroatoms provides a facile route to readily tune the carbon properties. The oxygen reduction reaction (ORR), where the reaction can be catalyzed without precious metals is one of the common applications for the heteroatom-doped carbons. Therefore, heteroatom doped catalysts might have a promising potential as a cathode in Microbial fuel cells (MFCs). MFCs have a good potential to produce electricity from biological oxidization of wastes at the anode and chemical reduction at the cathode. To the best of our knowledge, no studies have been yet reported on utilizing Sulfur trioxide pyridine (STP) and CMK-3 for the preparation of (N and S) doped ordered porous carbon materials. The presence of highly ordered mesostructured and the synergistic effect of N and S atoms with specific structures enhance the oxygen adsorption due to improving the electrocatalytic activity. So the optimal catalyst, with significant stability and excellent tolerance of methanol crossover can be a promising candidate for even other storage and conversion devices. Methods: The physico-chemical properties of the prepared samples were determined by Small Angle X-ray Diffraction (SAXRD), N2 sorption-desorption, Transmission Electron Microscopy (TEM), Field Emission Scanning Electron Microscopy (FESEM) and X-ray Photoelectron Spectroscopy (XPS). The prepared samples were further applied for oxygen reduction reaction (ORR) and the optimal cathode was tested with the Microbial Fuel Cell (MFC) system. Furthermore, according to structural analysis, The HRTEM, and SAXRD results confirmed the formation of well-ordered hexagonal (p6mm) arrays of mesopores in the direction of (100). The EDS and XPS approved that N and S were successfully doped into the CMK-3 carbon framework. Results: Among all the studied CMK-3 based catalysts, the catalyst prepared by STP precursor and pyrolysis at 900°C exhibited the highest ORR activity with the onset potential of 1.02 V vs. RHE and 4 electron transfer number per oxygen molecule in 0.1 M KOH. The high catalyst durability and fuel-crossover tolerance led to stable performance of the optimal cathode after 5000 s operation, while the Pt/C cathode-based was considerably degraded. Finally, the MFC system with the optimal cathode displayed 43.9 mW·m-2 peak power density showing even reasonable performance in comparison to a Pt/C 20 wt.%.cathode. Conclusions: The results revealed that the synergistic effect of nitrogen and sulfur co-doped on the carbon substrate structure leads to improvement in catalytic activity. Also, it was clearly observed that the porous structure and order level of the carbon substrate could considerably change the ORR performance.

Single copper sites dispersed on defective TiO2−x as a synergistic oxygen reduction reaction catalyst

2021 ◽  
Vol 154 (3) ◽  
pp. 034705
Author(s):  
Minchan Li ◽  
Ning Qin ◽  
Zongwei Ji ◽  
Qingmeng Gan ◽  
Zhenyu Wang ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Copper Sites ◽  
Oxygen Reduction Reaction Catalyst

scholarly journals Biomass wood-derived efficient Fe–N–C catalysts for oxygen reduction reaction

2021 ◽  
Author(s):  
Dingding Li ◽  
Zheng Han ◽  
Kunyue Leng ◽  
Shenghua Ma ◽  
Yi Wang ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction
Sign in / Sign up

Export Citation Format

Share Document