An iron porphyrin-based conjugated network wrapped around carbon nanotubes as a noble-metal-free electrocatalyst for efficient oxygen reduction reaction

2016 ◽  
Vol 3 (6) ◽  
pp. 821-827 ◽  
Author(s):  
Hongxing Jia ◽  
Zijun Sun ◽  
Daochuan Jiang ◽  
Shangfeng Yang ◽  
Pingwu Du
Keyword(s):  
Carbon Nanotubes ◽  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Robust Stability ◽  
Reduction Reaction ◽  
Iron Porphyrin ◽  
High Catalytic Activity ◽  
Excellent Performance ◽  
Methanol Tolerance ◽  
Metal Free

This study reported the first system of Fe-porphyrin conjugated network on carbon nanotubes for ORR, which exhibited excellent performance with high catalytic activity, robust stability, and good methanol tolerance.

Metal free-covalent triazine frameworks as oxygen reduction reaction catalysts – structure–electrochemical activity relationship

2021 ◽  
Author(s):  
Turgut Sönmez ◽  
Kendra Solveig Belthle ◽  
Andree Iemhoff ◽  
Jan Uecker ◽  
Jens Artz ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Reduction Reaction ◽  
High Catalytic Activity ◽  
Carbon Electrode ◽  
Metal Free ◽  
Covalent Triazine Framework

A covalent triazine framework coated on glassy carbon electrode performs high catalytic activity towards the ORR.

Synthesis of self-assembled PtPdAg nanostructures with a high catalytic activity for oxygen reduction reactions

Nanoscale ◽  
2018 ◽  
Vol 10 (36) ◽  
pp. 17140-17147 ◽  
Author(s):  
Muhammad Aizaz Ud Din ◽  
Faisal Saleem ◽  
Muhammad Zulfiqar ◽  
Xun Wang
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
High Catalytic Activity ◽  
Excellent Performance ◽  
Reduction Reactions ◽  
Oxygen Reduction Reactions ◽  
Mass Activity ◽  
Self Assembled

Oxygen reduction reaction-favoring PtPdAg hollow nanoparticle, nanodimer and nanowire catalysts are synthesized, all of which have been demonstrated to be promoting factors for the ORR. PtPdAg/C nanodimers exhibit excellent performance for the ORR with the highest mass activity.

scholarly journals Enhanced Electrocatalytic Activity and Stability toward the Oxygen Reduction Reaction with Unprotected Pt Nanoclusters

Nanomaterials ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 955 ◽  
Author(s):  
Jing Liu ◽  
Jiao Yin ◽  
Bo Feng ◽  
Tao Xu ◽  
Fu Wang
Keyword(s):  
Carbon Nanotubes ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Specific Activity ◽  
Catalytic Performance ◽  
Reduction Reaction ◽  
Top Down ◽  
Methanol Tolerance ◽  
Pt Nanoclusters ◽  
Mass Activity

The Pt particles within diameters of 1–3 nm known as Pt nanoclusters (NCs) are widely considered to be satisfactory oxygen reduction reaction (ORR) catalysts due to higher electrocatalytic performance and cost effectiveness. However, the utilization of such smaller Pt NCs is always limited by the synthesis strategies, stability and methanol tolerance of Pt. Herein, unprotected Pt NCs (~2.2 nm) dispersed on carbon nanotubes (CNTs) were prepared via a modified top-down approach using liquid Li as a solvent to break down the bulk Pt. Compared with the commercial Pt/C, the resultant Pt NCs/CNTs catalyst (Pt loading: 10 wt.%) exhibited more desirable ORR catalytic performance in 0.1 M HClO4. The specific activity (SA) and mass activity (MA) at 0.9 V for ORR over Pt NCs/CNTs were 2.5 and 3.2 times higher than those over the commercial Pt/C (Pt loading: 20 wt.%). Meanwhile, the Pt NCs/CNTs catalyst demonstrated more satisfactory stability and methanol tolerance. Compared with the obvious loss (~69%) of commercial Pt/C, only a slight current decrease (~10%) was observed for Pt NCs/CNTs after the chronoamperometric measurement for 2 × 104 s. Hence, the as-prepared Pt NCs/CNTs material displays great potential as a practical ORR catalyst.

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.

A nitrogen and boron co-doped metal-free carbon electrocatalyst for an efficient oxygen reduction reaction

2018 ◽  
Vol 5 (11) ◽  
pp. 2985-2991 ◽  
Author(s):  
Yunjie Zhou ◽  
Yue Sun ◽  
Huibo Wang ◽  
Cheng Zhu ◽  
Jin Gao ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Carbon Material ◽  
Reduction Reaction ◽  
Free Carbon ◽  
Metal Free ◽  
Co Doped

A N, B co-doped carbon material exhibits excellent catalytic activity for an oxygen reduction reaction.

One-pot synthesis of Co/N-doped mesoporous graphene with embedded Co/CoOx nanoparticles for efficient oxygen reduction reaction

Nanoscale ◽  
2017 ◽  
Vol 9 (29) ◽  
pp. 10233-10239 ◽  
Author(s):  
Yanli Niu ◽  
Xiaoqin Huang ◽  
Xiaoshuai Wu ◽  
Lei Zhao ◽  
Weihua Hu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Fuel Cells ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
High Catalytic Activity ◽  
One Pot ◽  
One Pot Synthesis

Exploration of sustainable electrocatalysts toward oxygen reduction reaction (ORR) with high catalytic activity remains a key challenge in the development of metal–air batteries and fuel cells.

Palladium copper nanosponges for electrocatalytic reduction of oxygen and glucose detection

2015 ◽  
Vol 3 (18) ◽  
pp. 9675-9681 ◽  
Author(s):  
Wen-Ping Wu ◽  
Arun Prakash Periasamy ◽  
Guan-Lin Lin ◽  
Zih-Yu Shih ◽  
Huan-Tsung Chang
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Alkaline Media ◽  
High Catalytic Activity ◽  
Glucose Detection ◽  
Cathode Catalyst ◽  
Electrocatalytic Reduction ◽  
One Pot

One-pot synthesized PdCu nanosponges (NSs) are separately used as a cathode catalyst for the oxygen reduction reaction in alkaline media and for enzymeless detection of glucose with high catalytic activity, stability, and durability.

One-step synthesis of cobalt and nitrogen co-doped carbon nanotubes and their catalytic activity for the oxygen reduction reaction

2015 ◽  
Vol 3 (24) ◽  
pp. 12718-12722 ◽  
Author(s):  
Shaofang Fu ◽  
Chengzhou Zhu ◽  
He Li ◽  
Dan Du ◽  
Yuehe Lin
Keyword(s):  
Carbon Nanotubes ◽  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
One Step ◽  
Co Doped

One-step synthesis of cobalt and nitrogen co-doped carbon nanotubes and their catalytic activity for the oxygen reduction reaction.

scholarly journals La1−xAgxMnO3 electrocatalyst with high catalytic activity for oxygen reduction reaction in aluminium air batteries

RSC Advances ◽  
2017 ◽  
Vol 7 (9) ◽  
pp. 5214-5221 ◽  
Author(s):  
Yejian Xue ◽  
He Miao ◽  
Shanshan Sun ◽  
Qin Wang ◽  
Shihua Li ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Specific Activity ◽  
Reduction Reaction ◽  
High Catalytic Activity ◽  
Ag Doping

Ag doping is one of the best methods for improving the catalytic activity of LaMnO3 perovskites, and the mass specific activity of LAM-30 (La0.7Ag0.3MnO3) can reach 48.0 mA mg−1 which is about 32 times that of LAM-0 (LaMnO3).

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
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