Significantly enhanced oxygen reduction reaction performance of N-doped carbon by heterogeneous sulfur incorporation: synergistic effect between the two dopants in metal-free catalysts

2016 ◽  
Vol 4 (19) ◽  
pp. 7422-7429 ◽  
Author(s):  
Jianbing Zhu ◽  
Kai Li ◽  
Meiling Xiao ◽  
Changpeng Liu ◽  
Zhijian Wu ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Fuel Cells ◽  
Synergistic Effect ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Metal Free ◽  
Energy Applications ◽  
Highly Active ◽  
Reaction Performance

Developing highly active non-noble metal oxygen reduction reaction (ORR) catalysts is crucial for a variety of renewable energy applications including fuel cells and metal–air batteries.

Carbon nanotube-supported Cu3N nanocrystals as a highly active catalyst for oxygen reduction reaction

2015 ◽  
Vol 3 (37) ◽  
pp. 18983-18990 ◽  
Author(s):  
C.-Y. Su ◽  
B.-H. Liu ◽  
T.-J. Lin ◽  
Y.-M. Chi ◽  
C.-C. Kei ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Carbon Nanotube ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Active Catalyst ◽  
Reduction Reaction ◽  
Alkaline Fuel Cells ◽  
Highly Active ◽  
Electron Process ◽  
Reaction Performance

We report a heterostructured Cu3N@CNT electrocatalyst for application in alkaline fuel cells. The size of well-dispersed Cu3N nanoparticles can be precisely controlled by ALD. Superior catalytic oxygen reduction reaction performance was achieved with a mixed two- and four-electron process.

scholarly journals Fe–Mn bimetallic oxides-catalyzed oxygen reduction reaction in alkaline direct methanol fuel cells

RSC Advances ◽  
2018 ◽  
Vol 8 (16) ◽  
pp. 8678-8687 ◽  
Author(s):  
Yuan Fang ◽  
Yonghui Wang ◽  
Fen Wang ◽  
Chengyong Shu ◽  
Jianfeng Zhu ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Synergistic Effect ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Direct Methanol Fuel Cells ◽  
Reduction Reaction ◽  
Direct Methanol ◽  
Methanol Fuel Cells ◽  
Bimetallic Oxides

Heterojunction interfaces and synergistic effect between Fe2O3 and Mn2O3 play a key role in Fe2O3/Mn2O3-catalyzed ORR.

scholarly journals N-doped carbon nanomaterials are durable catalysts for oxygen reduction reaction in acidic fuel cells

2015 ◽  
Vol 1 (1) ◽  
pp. e1400129 ◽  
Author(s):  
Jianglan Shui ◽  
Min Wang ◽  
Feng Du ◽  
Liming Dai
Keyword(s):  
Fuel Cells ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Carbon Nanomaterials ◽  
Low Cost ◽  
Clean Energy ◽  
Pem Fuel Cells ◽  
Reduction Reaction ◽  
Metal Free ◽  
Carbon Based

The availability of low-cost, efficient, and durable catalysts for oxygen reduction reaction (ORR) is a prerequisite for commercialization of the fuel cell technology. Along with intensive research efforts of more than half a century in developing nonprecious metal catalysts (NPMCs) to replace the expensive and scarce platinum-based catalysts, a new class of carbon-based, low-cost, metal-free ORR catalysts was demonstrated to show superior ORR performance to commercial platinum catalysts, particularly in alkaline electrolytes. However, their large-scale practical application in more popular acidic polymer electrolyte membrane (PEM) fuel cells remained elusive because they are often found to be less effective in acidic electrolytes, and no attempt has been made for a single PEM cell test. We demonstrated that rationally designed, metal-free, nitrogen-doped carbon nanotubes and their graphene composites exhibited significantly better long-term operational stabilities and comparable gravimetric power densities with respect to the best NPMC in acidic PEM cells. This work represents a major breakthrough in removing the bottlenecks to translate low-cost, metal-free, carbon-based ORR catalysts to commercial reality, and opens avenues for clean energy generation from affordable and durable fuel cells.

Synthesis of Metal-Free Electrocatalyst Obtained from Different Biomass Sources with High Performance for Oxygen Reduction Reaction in Fuel Cells

2016 ◽  
Vol 75 (14) ◽  
pp. 1035-1040 ◽  
Author(s):  
I. L. Alonso-Lemus ◽  
B. Escobar-Morales ◽  
F. J. Rodriguez-Varela ◽  
D. Gonzalez-Quijano ◽  
D. Lardizabal ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
High Performance ◽  
Reduction Reaction ◽  
Metal Free

Carbon fragments as highly active metal-free catalysts for the oxygen reduction reaction: a mechanistic study

Nanoscale ◽  
2019 ◽  
Vol 11 (41) ◽  
pp. 19422-19428 ◽  
Author(s):  
Keke Mao ◽  
Wei Zhang ◽  
Jun Dai ◽  
Xiao Cheng Zeng
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Group Symmetry ◽  
Mechanistic Study ◽  
Metal Free ◽  
Highly Active ◽  
Active Metal

Carbon fullerene fragments with low group-symmetry are highly active catalysts for the oxygen reduction reaction.

Single-layered platinum nanocage: a highly selective and efficient catalyst for fuel cells

2016 ◽  
Vol 4 (33) ◽  
pp. 12756-12767 ◽  
Author(s):  
Arup Mahata ◽  
Kuber Singh Rawat ◽  
Indrani Choudhuri ◽  
Biswarup Pathak
Keyword(s):  
Fuel Cells ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Efficient Catalyst ◽  
Energy Applications ◽  
Highly Efficient

Developing a highly efficient catalyst for the oxygen reduction reaction (ORR) is key to the performance of fuel cells for future energy applications.

An N-doped porous carbon network with a multidirectional structure as a highly efficient metal-free catalyst for the oxygen reduction reaction

Nanoscale ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 2423-2433 ◽  
Author(s):  
Hyunsu Han ◽  
Yuseong Noh ◽  
Yoongon Kim ◽  
Won Suk Jung ◽  
Seongmin Park ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Porous Carbon ◽  
Reduction Reaction ◽  
Cathode Catalysts ◽  
Metal Free ◽  
Highly Efficient ◽  
Carbon Network

A highly efficient multidirectional N-doped porous carbon network with plenty of graphitic N-species has been explored as cathode catalysts in fuel cells.

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