The energy saving mechanism of gas diffusion electrode based on Pt/C catalyst for saving energy and green electrodeposition of manganese dioxide

2015 ◽  
Vol 170 ◽  
pp. 92-97 ◽  
Author(s):  
Jing Tang ◽  
Hui-min Meng ◽  
Sen Li ◽  
Meihui Yu ◽  
Huan Li ◽  
...  
Keyword(s):  
Energy Saving ◽  
Manganese Dioxide ◽  
Gas Diffusion ◽  
Gas Diffusion Electrode ◽  
Saving Energy

scholarly journals Energy-saving electrolytic γ-MnO2 generation: non-noble metal electrocatalyst gas diffusion electrode as cathode in acid solution

RSC Advances ◽  
2019 ◽  
Vol 9 (43) ◽  
pp. 24816-24821
Author(s):  
Jing Tang ◽  
Hui Min Meng ◽  
Mei Yang Ji
Keyword(s):  
Acid Solution ◽  
Energy Saving ◽  
High Activity ◽  
Noble Metal ◽  
Current Density ◽  
Gas Diffusion ◽  
Gas Diffusion Electrode ◽  
A Current

Co3O4/FLG was used as a nanocatalyst to catalyze the ORR in the electrodeposition of MnO2. The proposed Co3O4/FLG nanocomposite GDE exhibited a high activity of 0.9 V at a current density of 100 A m−2.

Determination of Oxygen in Gas Media Using a Gas-Diffusion Electrode Based on Manganese Dioxide

2004 ◽  
Vol 59 (10) ◽  
pp. 983-984
Author(s):  
N. D. Ivanova ◽  
M. O. Danilov ◽  
E. I. Boldyrev ◽  
N. V. V'yunova
Keyword(s):  
Manganese Dioxide ◽  
Gas Diffusion ◽  
Gas Diffusion Electrode

scholarly journals Investigation of Gas Diffusion Electrode Systems for the Electrochemical CO2 Conversion

Catalysts ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 482
Author(s):  
Hilmar Guzmán ◽  
Federica Zammillo ◽  
Daniela Roldán ◽  
Camilla Galletti ◽  
Nunzio Russo ◽  
...  
Keyword(s):  
Carbon Capture ◽  
Active Sites ◽  
Co2 Reduction ◽  
Gas Diffusion ◽  
Gas Diffusion Electrode ◽  
Catalyst Loading ◽  
Co2 Conversion ◽  
Atmospheric Conditions ◽  
Electrochemical Co2 Reduction ◽  
Liquid Products

Electrochemical CO2 reduction is a promising carbon capture and utilisation technology. Herein, a continuous flow gas diffusion electrode (GDE)-cell configuration has been studied to convert CO2 via electrochemical reduction under atmospheric conditions. To this purpose, Cu-based electrocatalysts immobilised on a porous and conductive GDE have been tested. Many system variables have been evaluated to find the most promising conditions able to lead to increased production of CO2 reduction liquid products, specifically: applied potentials, catalyst loading, Nafion content, KHCO3 electrolyte concentration, and the presence of metal oxides, like ZnO or/and Al2O3. In particular, the CO productivity increased at the lowest Nafion content of 15%, leading to syngas with an H2/CO ratio of ~1. Meanwhile, at the highest Nafion content (45%), C2+ products formation has been increased, and the CO selectivity has been decreased by 80%. The reported results revealed that the liquid crossover through the GDE highly impacts CO2 diffusion to the catalyst active sites, thus reducing the CO2 conversion efficiency. Through mathematical modelling, it has been confirmed that the increase of the local pH, coupled to the electrode-wetting, promotes the formation of bicarbonate species that deactivate the catalysts surface, hindering the mechanisms for the C2+ liquid products generation. These results want to shine the spotlight on kinetics and transport limitations, shifting the focus from catalytic activity of materials to other involved factors.

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