N-doped porous carbon spheres as metal-free electrocatalyst for oxygen reduction reaction

2021 ◽  
Author(s):  
Guangyuan Ren ◽  
Shaoqing Chen ◽  
Junxian Zhang ◽  
Nianji Zhang ◽  
Chuanlai Jiao ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Porous Carbon ◽  
Low Cost ◽  
Reduction Reaction ◽  
Carbon Spheres ◽  
Metal Free ◽  
Template Free ◽  
Porous Carbon Spheres

The exploration of efficient oxygen reduction reaction (ORR) electrocatalysts with low-cost and facile process is crucial for the commercialization of fuel cells and metal-air batteries. Herein, we demonstrate a template-free...

Template-free synthesis of polyacrylonitrile-derived porous carbon nanoballs on graphene for efficient oxygen reduction in zinc–air batteries

2021 ◽  
Vol 9 (15) ◽  
pp. 9644-9654
Author(s):  
Halima Begum ◽  
Mohammad Shamsuddin Ahmed ◽  
Seunghun Jung
Keyword(s):  
Fuel Cells ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Porous Carbon ◽  
Active Sites ◽  
Reduction Reaction ◽  
Metal Free ◽  
Template Free ◽  
Energy Conversion Devices ◽  
Zinc Air Batteries

Introducing abundant active sites and improving their activity are two critical considerations for designing metal-free nitrogenous electrocatalysts for the oxygen reduction reaction (ORR) in energy conversion devices such as metal–air batteries and fuel cells.

Ultrafine Pt–Ni nanoparticles in hollow porous carbon spheres for remarkable oxygen reduction reaction catalysis

2021 ◽  
Author(s):  
Xian-Kai Wan ◽  
Gabor Samjeské ◽  
Hirosuke Matsui ◽  
Chaoqi Chen ◽  
Satoshi Muratsugu ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Porous Carbon ◽  
Reduction Reaction ◽  
Ni Nanoparticles ◽  
Carbon Spheres ◽  
Oxygen Reduction Reaction Activity ◽  
Porous Carbon Spheres

Small-sized Pt–Ni nanoparticles were synthesized into hollow porous carbon spheres (HPCS) under molecule assistance. Pt–Ni nanoparticle/HPCS prepared in presence of 2,2′-Dipyridylamine showed excellent oxygen reduction reaction activity/durability.

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.

Sepia-Derived N, P Co-doped Porous Carbon Spheres as Oxygen Reduction Reaction Electrocatalyst and Supercapacitor

2018 ◽  
Vol 6 (12) ◽  
pp. 16032-16038 ◽  
Author(s):  
Guangyuan Ren ◽  
Yunan Li ◽  
Quanshui Chen ◽  
Yong Qian ◽  
Jugong Zheng ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Porous Carbon ◽  
Reduction Reaction ◽  
Carbon Spheres ◽  
Porous Carbon Spheres ◽  
Co Doped

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.

Fe/N-doped hollow porous carbon spheres for oxygen reduction reaction

2020 ◽  
Vol 31 (12) ◽  
pp. 125404 ◽  
Author(s):  
Siyu Wang ◽  
Lulu Chen ◽  
Xiangjian Liu ◽  
Ling Long ◽  
Haohui Liu ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Porous Carbon ◽  
Reduction Reaction ◽  
Carbon Spheres ◽  
Porous Carbon Spheres
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