Iron and nitrogen co-functionalized porous 3D graphene frameworks as an efficient oxygen reduction catalyst

RSC Advances ◽  
2016 ◽  
Vol 6 (78) ◽  
pp. 74886-74894 ◽  
Author(s):  
Lili Cui ◽  
Mei Wu ◽  
Jinbao Xiang
Keyword(s):  
Oxygen Reduction ◽  
Alkaline Medium ◽  
Electrocatalytic Activity ◽  
Acidic Medium ◽  
3D Graphene ◽  
Enhanced Activity ◽  
Oxygen Reduction Catalyst

Fe/N-GAs exhibit comparable electrocatalytic activity to commercial Pt/C in alkaline medium together with enhanced activity compared to N-GAs in acidic medium.

Ultrathin and defect-rich intermetallic Pd2Sn nanosheets for efficient oxygen reduction electrocatalysis

2020 ◽  
Vol 8 (31) ◽  
pp. 15665-15669 ◽  
Author(s):  
Jiashun Liang ◽  
Shenzhou Li ◽  
Yawei Chen ◽  
Xuan Liu ◽  
Tanyuan Wang ◽  
...  
Keyword(s):  
Oxygen Reduction ◽  
Alkaline Medium ◽  
Enhanced Activity

Ultrathin and defect-rich Pd2Sn intermetallic nanosheets with unique Pd–Sn ordering are developed and display much enhanced activity and stability towards oxygen reduction in an alkaline medium.

scholarly journals Heteroatom doped graphdiyne as efficient metal-free electrocatalyst for oxygen reduction reaction in alkaline medium

2016 ◽  
Vol 4 (13) ◽  
pp. 4738-4744 ◽  
Author(s):  
Shuangshuang Zhang ◽  
Yingjun Cai ◽  
Hongyan He ◽  
Yaqin Zhang ◽  
Rongji Liu ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Alkaline Medium ◽  
Electrocatalytic Activity ◽  
Reduction Reaction ◽  
Metal Free ◽  
Co Doped

N, F co-doped graphdiyne was synthesized, which showed comparable electrocatalytic activity to Pt/C for ORR.

Pyridinic nitrogen-rich carbon nanocapsules from a bioinspired polydopamine derivative for highly efficient electrocatalytic oxygen reduction

2017 ◽  
Vol 5 (2) ◽  
pp. 519-523 ◽  
Author(s):  
Zhengran Yi ◽  
Zheye Zhang ◽  
Shuai Wang ◽  
Gaoquan Shi
Keyword(s):  
Oxygen Reduction ◽  
Alkaline Medium ◽  
Electrocatalytic Activity ◽  
Doping Content ◽  
Highly Efficient ◽  
Electrocatalytic Oxygen Reduction ◽  
N Doping ◽  
Carbon Nanocapsules ◽  
Pyridinic N ◽  
Pyridinic Nitrogen

A novel bioinspired polydopamine derivative was prepared by self-polymerization of 6-(2-aminoethyl)-3-hydroxypyridin-2(1H)-one in an alkaline medium. It could be used as precursor to produce pyridinic N-rich carbon nanocapsules with a desired N doping content and superior electrocatalytic activity and stability for the ORR.

scholarly journals Nitrogen and phosphorus co-doped carbon modified activated carbon as an efficient oxygen reduction catalyst for microbial fuel cells

RSC Advances ◽  
2018 ◽  
Vol 8 (2) ◽  
pp. 848-855 ◽  
Author(s):  
Kang Lv ◽  
Hua Zhang ◽  
Shuiliang Chen
Keyword(s):  
Fuel Cells ◽  
Activated Carbon ◽  
Oxygen Reduction ◽  
Electrocatalytic Activity ◽  
Microbial Fuel Cells ◽  
Air Cathode ◽  
Nitrogen And Phosphorus ◽  
Modified Activated Carbon ◽  
Oxygen Reduction Catalyst ◽  
Co Doped

Nitrogen and phosphorus co-doped carbon modified activated carbon shows decreased ORR over-potential, thus enhanced ORR electrocatalytic activity in the air-cathode of microbial fuel cells compared to pristine AC.

A PEFC With Pt–TiO2/C as Oxygen-Reduction Catalyst

2010 ◽  
Vol 8 (2) ◽  
Author(s):  
G. Selvarani ◽  
S. Maheswari ◽  
P. Sridhar ◽  
S. Pitchumani ◽  
A. K. Shukla
Keyword(s):  
Oxygen Reduction ◽  
Electrocatalytic Activity ◽  
Sol Gel ◽  
Atomic Ratio ◽  
Reduction Reaction ◽  
Cell Polarization ◽  
Polymer Electrolyte Fuel Cells ◽  
Electrochemical Surface Area ◽  
Polarization Studies ◽  
Oxygen Reduction Catalyst

Carbon-supported Pt–TiO2(Pt–TiO2/C) catalyst with varying atomic ratio of Pt to Ti, namely, 1:1, 2:1, and 3:1, is prepared by sol-gel method and its electrocatalytic activity toward oxygen-reduction reaction (ORR) is evaluated for the application in polymer electrolyte fuel cells (PEFCs). The optimum atomic ratio of Pt to Ti in Pt–TiO2/C and annealing temperature are established by cyclic voltammetry and fuel-cell-polarization studies. Pt–TiO2/C annealed at 750°C with Pt and Ti in atomic ratio of 2:1, namely, 750 Pt–TiO2/C (2:1), shows enhanced electrocatalytic activity toward ORR. It is found that the incorporation of TiO2 with Pt ameliorates both electrocatalytic activity and stability of cathode in relation to pristine Pt cathode, currently being used in PEFCs. A power density of 0.75 W/cm2 is achieved at 0.6 V for the PEFC with 750 Pt–TiO2/C (2:1) as compared with 0.62 W/cm2 at 0.6 V achieved with the PEFC comprising Pt/C as cathode catalyst while operating under identical conditions. Interestingly, carbon-supported Pt–TiO2 cathode exhibits only 6% loss in electrochemical surface area after 5000 potential cycles while it is as high as 25% for Pt/C.

Germanium-doped and germanium/nitrogen-codoped carbon nanotubes with highly enhanced activity for oxygen reduction in alkaline medium

RSC Advances ◽  
2016 ◽  
Vol 6 (76) ◽  
pp. 72676-72680 ◽  
Author(s):  
Fang Wang ◽  
Ziwu Liu ◽  
Meng Li ◽  
Quan-De Wang
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Oxygen Reduction ◽  
Alkaline Medium ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Enhanced Activity

Novel Ge-doped and Ge/N-codoped carbon nanotubes were prepared by chemical vapor deposition. Results indicate that the as-prepared Ge-containing carbon nanotubes exhibited superior activities and durability for O2 reduction in alkaline medium.

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