Rational design of a highly mesoporous Fe–N–C/Fe3C/C–S–C nanohybrid with dense active sites for superb electrocatalysis of oxygen reduction

2020 ◽  
Vol 8 (44) ◽  
pp. 23436-23454
Author(s):  
Ahmed Al-Shahat Eissa ◽  
Nam Hoon Kim ◽  
Joong Hee Lee
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Active Sites ◽  
High Performance ◽  
Rational Design ◽  
Reduction Reaction ◽  
Single Step

A high-performance and sustainable electrocatalyst for the oxygen reduction reaction is fabricated by a single-step doping/annealing strategy.

scholarly journals The influence of pore size distribution on the oxygen reduction reaction performance in nitrogen doped carbon microspheres

2016 ◽  
Vol 4 (7) ◽  
pp. 2581-2589 ◽  
Author(s):  
G. A. Ferrero ◽  
K. Preuss ◽  
A. B. Fuertes ◽  
M. Sevilla ◽  
M.-M. Titirici
Keyword(s):  
Oxygen Reduction Reaction ◽  
Pore Size Distribution ◽  
Oxygen Reduction ◽  
High Performance ◽  
Rational Design ◽  
Reduction Reaction ◽  
Carbon Microspheres ◽  
Nitrogen Doped ◽  
Reaction Performance ◽  
Nitrogen Doped Carbon

High-performance nitrogen-doped carbon electrocatalysts for the oxygen reduction reaction have been synthesized by the rational design of their pore structure.

Atomically dispersed Fe–Nx active sites within hierarchical mesoporous carbon as efficient electrocatalysts for the oxygen reduction reaction

2019 ◽  
Vol 7 (35) ◽  
pp. 20132-20138 ◽  
Author(s):  
Wenling Gu ◽  
Maochun Wu ◽  
Jing Sun ◽  
Jianbo Xu ◽  
Tianshou Zhao
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Mesoporous Carbon ◽  
Active Sites ◽  
High Performance ◽  
Reduction Reaction ◽  
Porous Graphitic Carbon ◽  
Template Removal ◽  
Hierarchically Porous ◽  
Removal Process

A novel protocol for synthesis of high performance N-doped hierarchically porous graphitic carbon electrocatalysts with single Fe atoms by pyrolyzing a mesoporous Fe–polydopamine precursor without an extra template removal process.

Rational design of three-dimensional nitrogen-doped carbon nanoleaf networks for high-performance oxygen reduction

2015 ◽  
Vol 3 (10) ◽  
pp. 5617-5627 ◽  
Author(s):  
Liang Chen ◽  
Chenyu Xu ◽  
Ran Du ◽  
Yueyuan Mao ◽  
Cheng Xue ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
High Performance ◽  
Rational Design ◽  
Three Dimensional ◽  
Catalytic Performance ◽  
Reduction Reaction ◽  
Nitrogen Doped ◽  
Nitrogen Doped Carbon ◽  
Excellent Catalytic Performance

“Carbon nanoleaf” aerogels were developed, constructed with nitrogen-doped CNTs/GNRs, which show excellent catalytic performance in oxygen reduction reaction.

scholarly journals Regulating Fe-spin state by atomically dispersed Mn-N in Fe-N-C catalysts with high oxygen reduction activity

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Gege Yang ◽  
Jiawei Zhu ◽  
Pengfei Yuan ◽  
Yongfeng Hu ◽  
Gan Qu ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Spin State ◽  
Active Sites ◽  
Rational Design ◽  
Magnetic Measurements ◽  
Low Cost ◽  
Reduction Reaction ◽  
Model Object ◽  
Reduction Activity

AbstractAs low-cost electrocatalysts for oxygen reduction reaction applied to fuel cells and metal-air batteries, atomic-dispersed transition metal-nitrogen-carbon materials are emerging, but the genuine mechanism thereof is still arguable. Herein, by rational design and synthesis of dual-metal atomically dispersed Fe,Mn/N-C catalyst as model object, we unravel that the O2 reduction preferentially takes place on FeIII in the FeN4 /C system with intermediate spin state which possesses one eg electron (t2g4eg1) readily penetrating the antibonding π-orbital of oxygen. Both magnetic measurements and theoretical calculation reveal that the adjacent atomically dispersed Mn-N moieties can effectively activate the FeIII sites by both spin-state transition and electronic modulation, rendering the excellent ORR performances of Fe,Mn/N-C in both alkaline and acidic media (halfwave positionals are 0.928 V in 0.1 M KOH, and 0.804 V in 0.1 M HClO4), and good durability, which outperforms and has almost the same activity of commercial Pt/C, respectively. In addition, it presents a superior power density of 160.8 mW cm−2 and long-term durability in reversible zinc–air batteries. The work brings new insight into the oxygen reduction reaction process on the metal-nitrogen-carbon active sites, undoubtedly leading the exploration towards high effective low-cost non-precious catalysts.

Defective Porous Carbon Microrods Derived from Fullerenes (C70) as High-Performance Electrocatalysts for Oxygen Reduction Reaction

Nanoscale ◽  
2021 ◽  
Author(s):  
Zhimin He ◽  
Peng Wei ◽  
Ting Xu ◽  
Ziqian Guo ◽  
Jiantao Han ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Porous Carbon ◽  
Active Sites ◽  
High Performance ◽  
Reduction Reaction ◽  
Carbon Skeleton ◽  
Effective Strategy

Disrupting the integrity of sp2-carbon skeleton offers an effective strategy to create active sites for oxygen reduction reaction (ORR). In this work, fullerene (C70) molecules, composed of 12 pentagons and...

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.

Strong-coupled Co-g-C3N4/SWCNTs composites as high-performance electrocatalysts for oxygen reduction reaction

RSC Advances ◽  
2015 ◽  
Vol 5 (80) ◽  
pp. 65303-65307 ◽  
Author(s):  
Qiangmin Yu ◽  
Jiaoxing Xu ◽  
Chuxin Wu ◽  
Lunhui Guan
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Strong Coupling ◽  
Active Sites ◽  
High Performance ◽  
Reduction Reaction

A high performance electrocatalyst for ORR in alkaline is based on the strong coupling of Co-g-C3N4 derived active sites on SWCNTs.

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