Tuning nondoped carbon nanotubes to an efficient metal-free electrocatalyst for oxygen reduction reaction by localizing the orbital of the nanotubes with topological defects

Nanoscale ◽  
2014 ◽  
Vol 6 (23) ◽  
pp. 14262-14269 ◽  
Author(s):  
Shujuan Jiang ◽  
Zhe Li ◽  
Huayu Wang ◽  
Yun Wang ◽  
Lina Meng ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Electrocatalytic Activity ◽  
Topological Defects ◽  
Reduction Reaction ◽  
Metal Free

Nondoped CNTs were tuned to be an efficient ORR electrocatalyst by introducing topological defects to localize the orbital of CNTs, which enables the enhancement of O2 chemisorption and the electrocatalytic activity.

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.

scholarly journals Heteroatom doped graphdiyne as efficient metal-free electrocatalyst for oxygen reduction reaction in alkaline medium

2016 ◽  
Vol 4 (13) ◽  
pp. 4738-4744 ◽  
Author(s):  
Shuangshuang Zhang ◽  
Yingjun Cai ◽  
Hongyan He ◽  
Yaqin Zhang ◽  
Rongji Liu ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Alkaline Medium ◽  
Electrocatalytic Activity ◽  
Reduction Reaction ◽  
Metal Free ◽  
Co Doped

N, F co-doped graphdiyne was synthesized, which showed comparable electrocatalytic activity to Pt/C for ORR.

Boron-Doped Carbon Nanotubes as Metal-Free Electrocatalysts for the Oxygen Reduction Reaction

2011 ◽  
Vol 123 (31) ◽  
pp. 7270-7273 ◽  
Author(s):  
Lijun Yang ◽  
Shujuan Jiang ◽  
Yu Zhao ◽  
Lei Zhu ◽  
Sheng Chen ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Metal Free ◽  
Boron Doped

Electrocatalytic Activity and Stability of Nitrogen-Containing Carbon Nanotubes in the Oxygen Reduction Reaction

2009 ◽  
Vol 113 (32) ◽  
pp. 14302-14310 ◽  
Author(s):  
Shankhamala Kundu ◽  
Tharamani Chikka Nagaiah ◽  
Wei Xia ◽  
Yuemin Wang ◽  
Stefan Van Dommele ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Electrocatalytic Activity ◽  
Reduction Reaction
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