Three-Dimensional Nitrogen-Doped Carbon Nanotubes/Graphene Structure Used as a Metal-Free Electrocatalyst for the Oxygen Reduction Reaction

2011 ◽  
Vol 115 (50) ◽  
pp. 24592-24597 ◽  
Author(s):  
Yanwen Ma ◽  
Liying Sun ◽  
Wen Huang ◽  
Lingrong Zhang ◽  
Jin Zhao ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Three Dimensional ◽  
Reduction Reaction ◽  
Nitrogen Doped ◽  
Metal Free ◽  
Nitrogen Doped Carbon

scholarly journals N8− Polynitrogen Stabilized on Nitrogen-Doped Carbon Nanotubes as an Efficient Electrocatalyst for Oxygen Reduction Reaction

Catalysts ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 864 ◽  
Author(s):  
Zhenhua Yao ◽  
Ruiyang Fan ◽  
Wangyang Ji ◽  
Tingxuan Yan ◽  
Maocong Hu
Keyword(s):  
Carbon Nanotubes ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Rotating Disk ◽  
Reduction Reaction ◽  
Rotating Disk Electrode ◽  
Nitrogen Doped ◽  
Metal Free ◽  
Temperature Programmed ◽  
Nitrogen Doped Carbon

In this work, non-traditional metal-free polynitrogen chain N8− deposited on a nitrogen-doped carbon nanotubes (PN-NCNT) catalyst was successfully synthesized by a facile cyclic voltammetry (CV) approach, which was further tested in an oxygen reduction reaction (ORR). The formation of PN on NCNT was confirmed by attenuated total reflectance–Fourier transform infrared spectroscopy (ATR-FTIR) and Raman spectroscopy. Partial positive charge of carbon within NCNT facilitated electron transfer and accordingly induced the formation of more PN species compared to CNT substrate as determined by temperature-programmed decomposition (TPD). Rotating disk electrode (RDE) measurements suggested that a higher current density was achieved over PN-NCNT than that on PN-CNT catalyst, which can be attributed to formation of the larger amount of N8− on NCNT. Kinetic study suggested a four-electron pathway mechanism over PN-NCNT. Moreover, it showed long stability and good methanol tolerance, which indicates its great potential application. This work provides insights on designing and synthesizing non-traditional metal-free catalysts for ORR in fuel cells.

Highly efficient metal-free electrocatalysts toward oxygen reduction derived from carbon nanotubes@polypyrrole core–shell hybrids

2016 ◽  
Vol 4 (46) ◽  
pp. 18008-18014 ◽  
Author(s):  
Hongli An ◽  
Ruikang Zhang ◽  
Zhenhua Li ◽  
Lei Zhou ◽  
Mingfei Shao ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Cost Effective ◽  
Reduction Reaction ◽  
Core Shell ◽  
Nitrogen Doped ◽  
Metal Free ◽  
Effective Synthesis ◽  
Nitrogen Doped Carbon

Nitrogen-doped carbon nanotubes (NCNTs) are recognized as one of the most promising oxygen reduction reaction (ORR) catalysts, while developing a preparation protocol for CNT-based ORR catalysts with cost-effective synthesis, high activity and durability is still a challenge.

scholarly journals In situ synthesis of metal embedded nitrogen doped carbon nanotubes as an electrocatalyst for the oxygen reduction reaction with high activity and stability

RSC Advances ◽  
2018 ◽  
Vol 8 (44) ◽  
pp. 25051-25056 ◽  
Author(s):  
Yanhong Yin ◽  
Hengbo Zhang ◽  
Rongzhen Gao ◽  
Aili Wang ◽  
Xinxin Mao ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
High Activity ◽  
Reduction Reaction ◽  
In Situ Synthesis ◽  
Nitrogen Doped ◽  
Nitrogen Doped Carbon

In this work, a Co–N doped carbon nanotube (CNT) catalyst was fabricated via a simple pyrolysis approach.

O2 and H2O2 transformation steps for the oxygen reduction reaction catalyzed by graphitic nitrogen-doped carbon nanotubes in acidic electrolyte from first principles calculations

2015 ◽  
Vol 17 (34) ◽  
pp. 21950-21959 ◽  
Author(s):  
Yuhang Li ◽  
Guoyu Zhong ◽  
Hao Yu ◽  
Hongjuan Wang ◽  
Feng Peng
Keyword(s):  
Carbon Nanotubes ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
First Principles ◽  
Reduction Reaction ◽  
First Principles Calculations ◽  
Nitrogen Doped ◽  
Acidic Electrolyte ◽  
Nitrogen Doped Carbon ◽  
Mixed Mechanism

DFT calculations reveal a mixed mechanism for the oxygen reduction reaction catalyzed by nitrogen-doped carbon nanotubes in acidic electrolyte.

Sign in / Sign up

Export Citation Format

Share Document