scholarly journals Towards understanding the active sites for the ORR in N-doped carbon materials through fine-tuning of nitrogen functionalities: an experimental and computational approach

2019 ◽  
Vol 7 (42) ◽  
pp. 24239-24250 ◽  
Author(s):  
Javier Quílez-Bermejo ◽  
Manuel Melle-Franco ◽  
Emilio San-Fabián ◽  
Emilia Morallón ◽  
Diego Cazorla-Amorós
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Active Sites ◽  
Carbon Materials ◽  
Reduction Reaction ◽  
Computational Approach ◽  
Fine Tuning

The design of advanced N-doped carbon materials towards oxygen reduction reaction (ORR) catalysis is only possible if the nature of the active sites is fully understood.

C–O−–K+ (Na+) groups in non-doped carbon as active sites for the oxygen reduction reaction

2018 ◽  
Vol 6 (19) ◽  
pp. 8955-8961 ◽  
Author(s):  
Yunjie Zhou ◽  
Yue Sun ◽  
Cheng Zhu ◽  
Yang Liu ◽  
Xing Dai ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Active Sites ◽  
Carbon Materials ◽  
Reduction Reaction

Adjacent C–O−–K+ (Na+) groups in the surface of non-doped carbon materials create active sites for the oxygen reduction reaction.

scholarly journals Fe2O3 Embedded Nitrogen-doped Biomass Carbon as Electrocatalyst for the Oxygen Reduction Reaction

2021 ◽  
Vol 2079 (1) ◽  
pp. 012002
Author(s):  
Yanling Wu ◽  
Huiji Jiao ◽  
Mingqian Hou ◽  
Peng Zhang
Keyword(s):  
Oxygen Reduction Reaction ◽  
Energy Conversion ◽  
Oxygen Reduction ◽  
Active Sites ◽  
Carbon Materials ◽  
Low Cost ◽  
Reduction Reaction ◽  
Biomass Carbon ◽  
Pyrolysis Process ◽  
Nitrogen Doped

Abstract Catalyst for ORR is important in the field of energy conversion. Previous research has shown that nanoparticle-embedded into N-doped carbon materials are a good ORR candidates. Here, Fe2O3/N-doped biomass carbon (named Fe2O3/N-bio-C) ORR catalyst via a pyrolysis process of mixture from the Heme precursor and biomass material (named poplar flowers). The as-synthesized electrocatalyst of Fe2O3/N-bio-C exhibits good electroactivity due to the formation of Fe2O3 nanoparticle active sites and abundant N-containing groups. The work points the way to synthesize the low-cost Fe-based N-doped biomass carbon ORR catalysts.

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