Mixed phthalocyanine-porphyrin-based conjugated microporous polymers towards unveiling the activity origin of Fe–N4 catalysts for the oxygen reduction reaction

2018 ◽  
Vol 6 (45) ◽  
pp. 22851-22857 ◽  
Author(s):  
Wenbo Liu ◽  
Kang Wang ◽  
Chiming Wang ◽  
Wenping Liu ◽  
Houhe Pan ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Active Sites ◽  
Reduction Reaction ◽  
Microporous Polymers ◽  
Conjugated Microporous Polymers

Mixed phthalocyanine-porphyrin-based conjugated microporous polymers with Fe–N4 active sites were fabricated with the origin of their ORR catalytic activity clarified.

In situ anchoring of metal nanoparticles in the N-doped carbon framework derived from conjugated microporous polymers towards an efficient oxygen reduction reaction

2018 ◽  
Vol 8 (14) ◽  
pp. 3572-3579 ◽  
Author(s):  
Qiang Li ◽  
Qi Shao ◽  
Qiong Wu ◽  
Qian Duan ◽  
Yanhui Li ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Metal Nanoparticles ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Microporous Polymers ◽  
Carbon Framework ◽  
Orr Activity ◽  
Conjugated Microporous Polymers

A series of efficient catalysts derived from metallophthalocyanine based conjugated microporous polymers show superior ORR activity in Zn–air batteries.

scholarly journals Insights into the role of an Fe–N active site in the oxygen reduction reaction on carbon-supported supramolecular catalysts

RSC Advances ◽  
2020 ◽  
Vol 10 (15) ◽  
pp. 8709-8716
Author(s):  
Lin Gu ◽  
Yunyun Dong ◽  
Yan Zhang ◽  
Bo Wang ◽  
Qing Yuan ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Active Site ◽  
Active Sites ◽  
Reduction Reaction ◽  
Alkaline Media ◽  
Supramolecular Catalysts

The PPYTZ–Fe/C catalyst containing Fe–N active sites exhibited high ORR catalytic activity and stability in alkaline media with a four-electron pathway progress.

scholarly journals Highly effective Fe-N-C electrocatalysts toward oxygen reduction reaction originated from 2,6-diaminopyridine

2021 ◽  
Author(s):  
Weixiang Yang ◽  
Shuihua Tang ◽  
Qiankuan Huang ◽  
Qian Zhang ◽  
Zhen Tang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Photoelectron Spectroscopy ◽  
Active Sites ◽  
Cost Effective ◽  
Reduction Reaction ◽  
Limiting Current ◽  
X Ray ◽  
Onset Potential

Abstract Fe-N-C electrocatalysts have been intensively studied due to their extraordinary catalytic activity toward oxygen reduction reaction (ORR). Here we prepare a Fe-N-C electrocatalyst through cost-effective and nontoxic precursors of 2,6-diaminopyridine (DAP) and FeCl3, where iron ions react with DAP to formed Fe-Nx species first, followed by polymerization and pyrolysis. X-ray diffraction patterns display no obvious Fe2O3 peaks observed in the catalyst as the nominal content of iron addition is less than 10 wt%. X-ray photoelectron spectroscopy spectra indicate that the catalyst has rich pyridinic nitrogen, graphitic nitrogen and Fe-Nx species, which are considered as active sites for ORR. Therefore the catalyst demonstrates an excellent catalytic activity with an onset potential of about 0.96 V, half-wave potential of about 0.84 V, and a limiting current density of 5.8 mA cm-2, better than commercial Pt/C catalyst in an alkaline medium. Furthermore its stability is also much more excellent than that of Pt/C. This work provides a strategy to synthesize universal M-N-C catalysts.

Fe(CN)5@PIL-derived N-doped porous carbon with FeCxNy active sites as a robust electrocatalyst for the oxygen reduction reaction

2019 ◽  
Vol 9 (1) ◽  
pp. 97-105 ◽  
Author(s):  
Shao-hua Zhang ◽  
Yi-jing Gao ◽  
Shan Cheng ◽  
Yi-long Yan ◽  
Shi-Jie Zhang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Porous Carbon ◽  
Active Sites ◽  
High Performance ◽  
Reduction Reaction

FeCxNy/N-PC catalysts derived by Fe(CN)5@PILs show high performance and catalytic activity for the ORR.

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