Ultrathin TiO2-coated MWCNTs with excellent conductivity and SMSI nature as Pt catalyst support for oxygen reduction reaction in PEMFCs

2012 ◽  
Vol 22 (39) ◽  
pp. 20977 ◽  
Author(s):  
Nibret Gebeyehu Akalework ◽  
Chun-Jern Pan ◽  
Wei-Nien Su ◽  
John Rick ◽  
Mon-Che Tsai ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Catalyst Support ◽  
Reduction Reaction ◽  
Pt Catalyst

scholarly journals TiSi2Ox Coated N-Doped Carbon Nanotubes as Pt Catalyst Support for the Oxygen Reduction Reaction in PEMFCs

2013 ◽  
Vol 117 (30) ◽  
pp. 15457-15467 ◽  
Author(s):  
Mohammad Norouzi Banis ◽  
Shuhui Sun ◽  
Xiangbo Meng ◽  
Yong Zhang ◽  
Zhiqiang Wang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Catalyst Support ◽  
Reduction Reaction ◽  
Pt Catalyst

scholarly journals Transition Metal (Fe, Co, Ni) Nanoparticles on Selective Amino-N-Doped Carbon as High-Performance Oxygen Reduction Reaction Electrocatalyst

Nanomaterials ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 742 ◽  
Author(s):  
Seonghee Kim ◽  
Shuhei Kato ◽  
Takahiro Ishizaki ◽  
Oi Lun Li ◽  
Jun Kang
Keyword(s):  
Transition Metal ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
High Performance ◽  
Reduction Reaction ◽  
Metal Nanoparticle ◽  
Superior Performance ◽  
Pt Catalyst ◽  
Hydrogen Electrode ◽  
Electrochemical Testing

Metal-air batteries are attracting increasing attention as a superior renewable energy conversion device due to their high performance and strong potential. However, the high cost and low stability of the current Pt catalyst is the main obstacle preventing wide industrial application. In this work, we applied a plasma process to fabricate aniline and a transition metals electrode (Fe, Co, Ni) as the carbon-nitrogen and the metal nanoparticle (NP) precursors, respectively, for selective metal/amino-N-doped carbon catalysts. All three as-synthesized catalysts exhibited dominant amino-N as the major C–N bonding state. In electrochemical testing, Co/amino-N-doped carbon showed positive E1/2 potential (0.83 V vs. Reversible Hydrogen Electrode (RHE)). In addition, the calculated electron transfer number (n) of Co/amino-N-doped carbon at 0.5 V vs. RHE was 3.81, which was only slightly less than that of commercial Pt/C (3.97). This superior performance of transition metal/amino-N-doped carbon promotes it as an economical oxygen reduction reaction (ORR) electrocatalyst to replace expensive Pt/C in metal-air batteries.

Catalytic Activity of Silver Metal Supported on Doped Graphene in Alkaline Medium for Oxygen Reduction Reaction

2019 ◽  
Vol 1155 ◽  
pp. 55-69
Author(s):  
Nabila A. Karim ◽  
Nor Shahirah Shamsul ◽  
Siti Kartom Kamarudin
Keyword(s):  
Fuel Cell ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Adsorption Energy ◽  
Reduction Reaction ◽  
Pt Catalyst ◽  
Nitrogen And Phosphorus ◽  
Doped Graphene ◽  
Phosphorus Doped ◽  
Silver Metal

The platinum (Pt) degradation, poisoning and carbon corrosion in acidic fuel cell has led to explore the research in alkaline fuel cell. However, the high cost of Pt has brought a lot of studies to find replacement for Pt catalyst. Due to that, silver metal is selected as non-Pt catalyst and supported by the nitrogen and phosphorus-doped on graphene for oxygen reduction reaction in alkaline medium. The adsorption energy and mechanism of the oxygen reduction reaction is studied by using density functional theory (DFT) calculation. The support catalyst of graphene is doped with three atom nitrogen and phosphorus namely as N3 and P3, respectively. The Ag supported on N3 and P3 are tested on O2, OOH, O and OH species. There are two types adsorption of O2 on N3 and P3 which is side and end-on adsorption configuration. The N3-Ag has similar adsorption energy for both configurations, but P3-Ag has low adsorption energy by end-on adsorption configuration. The effect of doped atoms on graphene also have been tested on O2, OOH, O and OH species. The result shows that increasing nitrogen doping atom has decreased the adsorption energy of O2 and vice versa on phosphorus atoms. A single phosphorus doping atom on graphene has shown the lowest adsorption energy, but the end-on configuration of P3-Ag has shown most stable adsorption. The schematic free energy profile shows that both N3-Ag and P3-Ag have high possibilities to be followed in oxygen reduction reaction mechanism but P3-Ag has advantage due to stable adsorption as non-Pt catalyst. The Ag metal supported on nitrogen and phosphorus-doped graphene show promising result to be a catalyst in alkaline fuel cell.

Graphitic mesoporous carbon xerogel as an effective catalyst support for oxygen reduction reaction

2016 ◽  
Vol 41 (21) ◽  
pp. 9204-9210 ◽  
Author(s):  
Hong Jin ◽  
Jinyang Li ◽  
Lianxing Gao ◽  
Fuyu Chen ◽  
Huamin Zhang ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Mesoporous Carbon ◽  
Catalyst Support ◽  
Reduction Reaction ◽  
Carbon Xerogel ◽  
Effective Catalyst

scholarly journals Tailoring Synthesis Conditions of Carbon Xerogels towards Their Utilization as Pt-Catalyst Supports for Oxygen Reduction Reaction (ORR)

Catalysts ◽  
2012 ◽  
Vol 2 (4) ◽  
pp. 466-489 ◽  
Author(s):  
Cinthia Alegre ◽  
David Sebastián ◽  
Estela Baquedano ◽  
María Elena Gálvez ◽  
Rafael Moliner ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Pt Catalyst ◽  
Catalyst Supports ◽  
Synthesis Conditions ◽  
Carbon Xerogels
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