New Insight into the Nature of Catalytic Activity of Pyrolysed Iron Porphyrin Based Electro-Catalysts for the Oxygen Reduction Reaction (ORR) in Acidic Media

2019 ◽  
Vol 25 (1) ◽  
pp. 93-104 ◽  
Author(s):  
Ulrike I. Kramm ◽  
Irmgard Abs-Wurmbach ◽  
Sebastian Fiechter ◽  
Iris Herrmann ◽  
Jörg Radnik ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Iron Porphyrin ◽  
Acidic Media ◽  
Insight Into

scholarly journals Atomically thin SiC nanoparticles obtained via ultrasonic treatment to realize enhanced catalytic activity for the oxygen reduction reaction in both alkaline and acidic media

RSC Advances ◽  
2017 ◽  
Vol 7 (37) ◽  
pp. 22875-22881 ◽  
Author(s):  
Jiahao Guo ◽  
Kaiyue Song ◽  
Bingbing Wu ◽  
Xiang Zhu ◽  
Beilin Zhang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Ultrasonic Treatment ◽  
Reduction Reaction ◽  
Methanol Crossover ◽  
Acidic Media ◽  
Sic Nanoparticles

Atomically thin SiC derived from commercial SiC and possesses prominent ORR catalytic activity, comparable with Pt/C. The ORR process is dominated by a 4-electron pathway. Atomically thin SiC also exhibited outstanding durability and methanol crossover resistance.

Interfacial proton enrichment enhances proton-coupled electrocatalytic reactions

2018 ◽  
Vol 6 (36) ◽  
pp. 17771-17777 ◽  
Author(s):  
Yue Zhao ◽  
Yu Ding ◽  
Bin Qiao ◽  
Kai Zheng ◽  
Pei Liu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Reduction Reaction ◽  
Acidic Media ◽  
Alloy Nanostructures ◽  
Electrocatalytic Reactions

PdNi alloy nanostructures–polyethyleneimine inorganic–organic nanocomposites exhibit enhanced catalytic activity for the oxygen reduction reaction and hydrogen evolution reaction in acidic media due to interfacial proton enrichment.

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.

Recent Advances in Non-Precious Metal Electrocatalysts for Oxygen Reduction in Acidic Media and PEMFCs: An Activity, Stability and Mechanism Study

2021 ◽  
Author(s):  
Suojiang Zhang ◽  
jiayao Cui ◽  
Qingjun Chen ◽  
Xiaojin Li
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Precious Metal ◽  
Platinum Group Metal ◽  
Reduction Reaction ◽  
Proton Exchange ◽  
Mechanism Study ◽  
Acidic Media ◽  
Intensive Research ◽  
Limited Supply

The high cost and limited supply of platinum has driven intensive research into the use of non-platinum group metal (PGM-free) as cathode oxygen reduction reaction (ORR) catalysts for proton exchange...

Ferrocene-based porous organic polymer derived high-performance electrocatalysts for oxygen reduction

2017 ◽  
Vol 5 (42) ◽  
pp. 22163-22169 ◽  
Author(s):  
Baolong Zhou ◽  
Liangzhen Liu ◽  
Pingwei Cai ◽  
Guang Zeng ◽  
Xiaoqiang Li ◽  
...  
Keyword(s):  
Schiff Base ◽  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Porous Carbon ◽  
High Performance ◽  
Reduction Reaction ◽  
Organic Polymer ◽  
Porous Organic Polymers ◽  
Porous Organic Polymer

Two nitrogen-rich porous organic polymers (POPs) were prepared via Schiff base chemistry. Carbonization of these POPs results in porous carbon nanohybrids which exhibit excellent catalytic activity toward the oxygen reduction reaction (ORR).

The role of iron in the preparation and oxygen reduction reaction activity of nitrogen-doped carbon

2015 ◽  
Vol 51 (12) ◽  
pp. 2450-2453 ◽  
Author(s):  
Dae-Soo Yang ◽  
Min Young Song ◽  
Kiran Pal Singh ◽  
Jong-Sung Yu
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Carbon Sources ◽  
Reduction Reaction ◽  
Acidic Media ◽  
Oxygen Reduction Reaction Activity ◽  
Exact Role ◽  
Ordered Mesoporous ◽  
Nitrogen Doped Carbon

The exact role of iron in catalyzing oxygen reduction reaction in both alkaline and acidic media is portrayed with unique platelet ordered mesoporous carbon prepared using Fe-phthalocyanine as iron, nitrogen and carbon sources.

Insights into the Catalytic Activity of Barium Carbonate for Oxygen Reduction Reaction

2016 ◽  
Vol 120 (40) ◽  
pp. 22895-22902 ◽  
Author(s):  
Xuecheng Cao ◽  
Tao Hong ◽  
Ruizhi Yang ◽  
Jing-Hua Tian ◽  
Changrong Xia ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Barium Carbonate ◽  
Reduction Reaction
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