(Invited) Effect of Ionomer Structure for Oxygen Reduction Reaction in Acidic Media and Fuel Cell Performance

2014 ◽  
Vol 39 (29) ◽  
pp. 16731-16739 ◽  
Author(s):  
B. Ruiz-Camacho ◽  
J.H. Martínez-González ◽  
R.G. González-Huerta ◽  
M. Tufiño-Velázquez

2019 ◽  
Vol 3 (1) ◽  
pp. 189-197 ◽  
Author(s):  
Gabriel Alonso ◽  
Yadira Gochi ◽  
Romeli Barbosa ◽  
Luis G. Arriaga ◽  
Nicolas Alonso

2015 ◽  
Vol 40 (48) ◽  
pp. 17371-17379 ◽  
Author(s):  
M.L. Hernández-Pichardo ◽  
R.G. González-Huerta ◽  
P. del Angel ◽  
M. Tufiño-Velazquez ◽  
L. Lartundo

2020 ◽  
Vol 9 (1) ◽  
pp. 843-852
Author(s):  
Hunan Jiang ◽  
Jinyang Li ◽  
Mengni Liang ◽  
Hanpeng Deng ◽  
Zuowan Zhou

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.


2021 ◽  
Author(s):  
Suojiang Zhang ◽  
jiayao Cui ◽  
Qingjun Chen ◽  
Xiaojin Li

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...


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