Effect of Ball-Milling on the Oxygen Reduction Reaction Activity of Iron and Nitrogen Co-doped Carbide-Derived Carbon Catalysts in Acid Media

2019 ◽  
Vol 2 (11) ◽  
pp. 7952-7962 ◽  
Author(s):  
Sander Ratso ◽  
Moulay Tahar Sougrati ◽  
Maike Käärik ◽  
Maido Merisalu ◽  
Mihkel Rähn ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Ball Milling ◽  
Reduction Reaction ◽  
Oxygen Reduction Reaction Activity ◽  
Acid Media ◽  
Carbon Catalysts ◽  
Carbide Derived Carbon ◽  
Co Doped

scholarly journals Effect of Pyrolysis Conditions on the Performance of Co–Doped MOF–Derived Carbon Catalysts for Oxygen Reduction Reaction

Catalysts ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1163
Author(s):  
Ning Cui ◽  
Kexiao Bi ◽  
Wei Sun ◽  
Qianqian Wu ◽  
Yinan Li ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Heating Rate ◽  
Reduction Reaction ◽  
Half Wave ◽  
Step Heating ◽  
The Stability ◽  
Carbon Catalysts ◽  
Co Doped

MOF–derived porous carbon is a type of promising catalyst to replace expensive Pt–based catalysts for oxygen reduction reaction (ORR). The catalytic activity for ORR depends closely on pyrolysis conditions. In this work, a Co–doped ZIF–8 material was chosen as a research object. The effect of pyrolysis conditions (temperature, heating rate, two–step heating) on the ORR performance of ZIF–derived carbon catalysts was systematically studied. The Co–ZIF–8 catalyst carbonized at 900 °C exhibits better ORR catalytic activity than that carbonized at 800 °C and 1000 °C. Moreover, a low heating rate can enhance catalytic activity. Two–step pyrolysis is proven to be an effective way to improve the performance of catalysts. Reducing the heating rate in the low–temperature stage is more beneficial to the ORR performance, compared to the heating rate in the high–temperature stage. The results show that the Co–ZIF–8 catalyst exhibits the best performance when the precursor was heated to 350 °C at 2 °C/min, and then heated to 900 °C at 5 °C/min. The optimum Co–ZIF–8 catalyst shows a half–wave potential of 0.82 V and a current density of 5.2 mA·cm−2 in 0.1 M KOH solution. It also exhibits high content of defects and good graphitization. TEM mapping shows that Co and N atoms are highly dispersed in the polyhedral carbon skeleton. However, two–step pyrolysis has no significant effect on the stability of the catalyst.

Oxygen reduction reaction activity of nitrogen-doped titanium oxide in acid media

2013 ◽  
Vol 88 ◽  
pp. 697-707 ◽  
Author(s):  
Mitsuharu Chisaka ◽  
Akimitsu Ishihara ◽  
Kazuaki Suito ◽  
Ken-ichiro Ota ◽  
Hirokazu Muramoto
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Titanium Oxide ◽  
Reduction Reaction ◽  
Oxygen Reduction Reaction Activity ◽  
Acid Media ◽  
Nitrogen Doped

A N,P-co-doped 3D graphene/cobalt-embedded electrocatalyst for the oxygen reduction reaction

2017 ◽  
Vol 41 (24) ◽  
pp. 15236-15243 ◽  
Author(s):  
Xiao-Li Hu ◽  
Xu-Hong Dai ◽  
Xing-Quan He
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Low Cost ◽  
Reduction Reaction ◽  
Carbon Catalyst ◽  
Oxygen Reduction Reaction Activity ◽  
3D Graphene ◽  
Highly Efficient ◽  
Activity Catalyst ◽  
Co Doped

A 3D cobalt-embedded N,P-doped carbon catalyst was synthesized as a low-cost, stable and highly efficient oxygen reduction reaction activity catalyst.

Highly efficient bifunctional oxygen reduction/evolution activity of a non-precious nanocomposite derived from a tetrazine-COF

Nanoscale ◽  
2020 ◽  
Vol 12 (44) ◽  
pp. 22718-22734
Author(s):  
Soumyabrata Roy ◽  
Subbareddy Mari ◽  
Manoj Kaja Sai ◽  
Saurav Ch. Sarma ◽  
Shreya Sarkar ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
State Of The Art ◽  
Reduction Reaction ◽  
Graphitic Carbon ◽  
Oxygen Reduction Reaction Activity ◽  
Highly Efficient ◽  
Co Doped

Catalyst engineering of a COF derived Co doped graphitic carbon electrocatalyst exhibited oxygen reduction reaction activity comparable with that of state-of-the-art material Pt/C.

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