Zinc, sulfur and nitrogen co-doped carbon from sodium chloride/zinc chloride-assisted pyrolysis of thiourea/sucrose for highly efficient oxygen reduction reaction in both acidic and alkaline media

2020 ◽  
Vol 576 ◽  
pp. 139-146 ◽  
Author(s):  
Qing-Cheng Cao ◽  
Xiao-Bo Ding ◽  
Fang Li ◽  
Yuan-Hang Qin ◽  
Cunwen Wang
Keyword(s):  
Sodium Chloride ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Zinc Chloride ◽  
Reduction Reaction ◽  
Alkaline Media ◽  
Highly Efficient ◽  
Acidic And Alkaline Media ◽  
Co Doped

A ZIF-derived hierarchically porous Fe–Zn–N–C catalyst synthesized via a two-stage pyrolysis for the highly efficient oxygen reduction reaction in both acidic and alkaline media

2019 ◽  
Vol 55 (93) ◽  
pp. 13979-13982 ◽  
Author(s):  
Fang Li ◽  
Xiao-Bo Ding ◽  
Qing-Cheng Cao ◽  
Yuan-Hang Qin ◽  
Cunwen Wang
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Alkaline Media ◽  
Pyrolysis Process ◽  
Two Stage ◽  
Hierarchically Porous ◽  
Highly Efficient ◽  
Acidic And Alkaline Media

A ZIF-derived Fe–Zn–N–C catalyst synthesized by a two-stage pyrolysis process exhibits superior activity for the ORR.

scholarly journals Superior FexN electrocatalyst derived from 1,1′-diacetylferrocene for oxygen reduction reaction in alkaline and acidic media

2020 ◽  
Vol 9 (1) ◽  
pp. 843-852
Author(s):  
Hunan Jiang ◽  
Jinyang Li ◽  
Mengni Liang ◽  
Hanpeng Deng ◽  
Zuowan Zhou
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Current Density ◽  
Active Sites ◽  
Reduction Reaction ◽  
Alkaline Media ◽  
Acidic Media ◽  
Onset Potential ◽  
Acidic And Alkaline Media ◽  
The Stability

AbstractAlthough Fe–N/C catalysts have received increasing attention in recent years for oxygen reduction reaction (ORR), it is still challenging to precisely control the active sites during the preparation. Herein, we report FexN@RGO catalysts with the size of 2–6 nm derived from the pyrolysis of graphene oxide and 1,1′-diacetylferrocene as C and Fe precursors under the NH3/Ar atmosphere as N source. The 1,1′-diacetylferrocene transforms to Fe3O4 at 600°C and transforms to Fe3N and Fe2N at 700°C and 800°C, respectively. The as-prepared FexN@RGO catalysts exhibited superior electrocatalytic activities in acidic and alkaline media compared with the commercial 10% Pt/C, in terms of electrochemical surface area, onset potential, half-wave potential, number of electrons transferred, kinetic current density, and exchange current density. In addition, the stability of FGN-8 also outperformed commercial 10% Pt/C after 10000 cycles, which demonstrates the as-prepared FexN@RGO as durable and active ORR catalysts in acidic media.

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