scholarly journals Manganese Oxide/Poly(3,4-ethylenedioxythiophene) Hybrid Electrocatalysts for the Oxygen Reduction Reaction in Alkaline Fuel Cells

2016 ◽  
Vol 75 (14) ◽  
pp. 965-970 ◽  
Author(s):  
T. N. Lambert ◽  
J. A. Vigil
Keyword(s):  
Fuel Cells ◽  
Oxygen Reduction Reaction ◽  
Manganese Oxide ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Alkaline Fuel Cells

Oxygenophilic ionic liquids promote the oxygen reduction reaction in Pt-free carbon electrocatalysts

2017 ◽  
Vol 4 (5) ◽  
pp. 895-899 ◽  
Author(s):  
Mo Qiao ◽  
Cheng Tang ◽  
Liviu Cristian Tanase ◽  
Cristian Mihail Teodorescu ◽  
Chengmeng Chen ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Fuel Cells ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Polymer Electrolyte ◽  
Surface Properties ◽  
Polymer Electrolyte Membrane ◽  
Reduction Reaction ◽  
Alkaline Fuel Cells ◽  
Electrolyte Membrane

We propose a novel idea to improve the surface properties of carbon-based Pt-free electrocatalysts in Polymer Electrolyte Membrane Fuel Cells (PEMFCs) and Alkaline Fuel Cells (AFCs).

Carbon nanotube-supported Cu3N nanocrystals as a highly active catalyst for oxygen reduction reaction

2015 ◽  
Vol 3 (37) ◽  
pp. 18983-18990 ◽  
Author(s):  
C.-Y. Su ◽  
B.-H. Liu ◽  
T.-J. Lin ◽  
Y.-M. Chi ◽  
C.-C. Kei ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Carbon Nanotube ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Active Catalyst ◽  
Reduction Reaction ◽  
Alkaline Fuel Cells ◽  
Highly Active ◽  
Electron Process ◽  
Reaction Performance

We report a heterostructured Cu3N@CNT electrocatalyst for application in alkaline fuel cells. The size of well-dispersed Cu3N nanoparticles can be precisely controlled by ALD. Superior catalytic oxygen reduction reaction performance was achieved with a mixed two- and four-electron process.

Enhancing Oxygen Reduction Reaction Activity of α-MnO2 Nanowires Through Ag Doping

NANO ◽  
2020 ◽  
Vol 15 (09) ◽  
pp. 2050115
Author(s):  
Zixu Wu ◽  
Guangxing Li ◽  
Qin Liao ◽  
Ruida Ding ◽  
Xuze Zuo ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Fuel Cells ◽  
Oxygen Reduction Reaction ◽  
Manganese Oxide ◽  
Oxygen Reduction ◽  
High Performance ◽  
Large Scale ◽  
Reaction Pathway ◽  
Reduction Reaction ◽  
Ag Doping

Enhancing the catalytic activity of manganese oxide in oxygen reduction reaction (ORR) is a key issue for its large-scale application in metal-air fuel cells. Ag-doped [Formula: see text]-MnO2 nanowires without Ag or Ag2O have been successfully synthesized via a facile hydrothermal method, and the changes in both the structure and electrochemical catalytic performances after Ag doping are investigated. Compared with the pristine [Formula: see text]-MnO2, the as-prepared Ag-doped MnO2 exhibits a significantly enhanced catalytic activity in both ORR and Mg-air fuel cell application. With Ag/Mn ratio of 1:25, Ag-doped MnO2 exhibits a typical 4e-reaction pathway and presents a 163 mV higher half-wave potential than that of the pristine [Formula: see text]-MnO2. Furthermore, it demonstrates a power density of 75.1[Formula: see text]mW[Formula: see text]cm[Formula: see text] at current density of 134.5[Formula: see text]mA[Formula: see text]cm[Formula: see text] in the Mg-air fuel cells. The enhanced ORR performances are considered to be contributed from the activation of surface lattice oxygen, the improvement in conductivity and the increase in oxygen vacancies of [Formula: see text]-MnO2. These findings provide new understanding for developing high-performance manganese oxide catalysts.

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