Optimization of active sites by sulfurization of the core–shell ZIF 67@ZIF 8 for rapid oxygen reduction kinetics in acidic media

2021 ◽  
Author(s):  
Jung Su Lee ◽  
Hashikaa Rajan ◽  
Maria Christy ◽  
Sung Chul Yi
Keyword(s):  
Oxygen Reduction ◽  
Active Sites ◽  
Core Shell ◽  
Reduction Kinetics ◽  
Acidic Media ◽  
The Core ◽  
Oxygen Reduction Kinetics

Local heterojunctions of atomic Pt clusters boost the oxygen reduction activity of Rucore@Pdshell nanocrystallites

2016 ◽  
Vol 4 (45) ◽  
pp. 17848-17856 ◽  
Author(s):  
Jeng Han Wang ◽  
Kuan-Wen Wang ◽  
Tian-Lin Chen ◽  
Chia-Hsin Wang ◽  
Yu-Ming Huang ◽  
...  
Keyword(s):  
Oxygen Reduction ◽  
Valence Electron ◽  
Atomic Scale ◽  
Core Shell ◽  
Reduction Kinetics ◽  
Reduction Activity ◽  
Oxygen Reduction Kinetics

Atomic scale Pt clusters attract the valence electron from sublayer crystallites to facilitate oxygen reduction kinetics at core–shell NPs.

scholarly journals Impact of Heterometallic Cooperativity of Iron and Copper Active Sites on Electrocatalytic Oxygen Reduction Kinetics

ACS Catalysis ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 2356-2365
Author(s):  
Masaru Kato ◽  
Natsuki Fujibayashi ◽  
Daiki Abe ◽  
Naohiro Matsubara ◽  
Satoshi Yasuda ◽  
...  
Keyword(s):  
Oxygen Reduction ◽  
Active Sites ◽  
Reduction Kinetics ◽  
Electrocatalytic Oxygen Reduction ◽  
Oxygen Reduction Kinetics

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.

Phosphor and nitrogen co-doped rutile TiO2 covered on TiN for oxygen reduction reaction in acidic media

2019 ◽  
Vol 9 (3) ◽  
pp. 611-619 ◽  
Author(s):  
Mitsuharu Chisaka ◽  
Hiroyuki Morioka
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Active Sites ◽  
Reduction Reaction ◽  
Acidic Media ◽  
Rutile Tio2 ◽  
Co Doped

Phosphor and nitrogen atoms were co-doped into rutile TiO2 phase on TiN to produce new active sites for oxygen reduction reaction.

Fe@Pt core-shell nanoparticles as electrocatalyst for oxygen reduction reaction in acidic media

Ionics ◽  
2017 ◽  
Vol 24 (1) ◽  
pp. 229-236 ◽  
Author(s):  
Yanli Huang ◽  
Zhan Tan ◽  
Huimin Wu ◽  
Chuanqi Feng ◽  
Yu Ding
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Core Shell ◽  
Acidic Media ◽  
Shell Nanoparticles ◽  
Core Shell Nanoparticles
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