Reduction of CO[sub 2] to Ethylene at Three-Phase Interface Effects of Electrode Substrate and Catalytic Coating

2005 ◽  
Vol 152 (12) ◽  
pp. D213 ◽  
Author(s):  
K. Ogura ◽  
R. Oohara ◽  
Y. Kudo
Keyword(s):  
Phase Interface ◽  
Catalytic Coating ◽  
Three Phase ◽  
Interface Effects

Wetting Behavior at Micro-/Nanoscales: Direct Imaging of a Microscopic Water/Air/Solid Three-Phase Interface

Small ◽  
2009 ◽  
Vol 5 (8) ◽  
pp. 908-912 ◽  
Author(s):  
Peipei Chen ◽  
Long Chen ◽  
Dong Han ◽  
Jin Zhai ◽  
Yongmei Zheng ◽  
...  
Keyword(s):  
Phase Interface ◽  
Direct Imaging ◽  
Wetting Behavior ◽  
Three Phase

Enhancement of interfacial property by novel solid ionomer CsHSO4-H4SiW12O40 for the three-phase interface of a medium-temperature anhydrous fuel cell

2019 ◽  
Vol 253 ◽  
pp. 201-204 ◽  
Author(s):  
Keiichiro Maegawa ◽  
Kyaw Zay Ya ◽  
Wai Kian Tan ◽  
Go Kawamura ◽  
Toshiaki Hattori ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Phase Interface ◽  
Interfacial Property ◽  
Medium Temperature ◽  
Three Phase

Generation of hydrogen peroxide by reduction of oxygen in semihydrophobic trickle electrodes

1991 ◽  
Vol 56 (2) ◽  
pp. 309-316 ◽  
Author(s):  
Otomar Špalek ◽  
Karel Balogh
Keyword(s):  
Hydrogen Peroxide ◽  
Carbon Black ◽  
Oxygen Reduction ◽  
Surface Area ◽  
Phase Interface ◽  
Electrochemical Activity ◽  
Polarization Curves ◽  
Electric Resistance ◽  
Graphite Felt ◽  
Three Phase

The reduction of oxygen to hydrogen peroxide was studied in semihydrophobic trickle electrodes prepared from crushed graphite and teflonized carbon black. The potential of these electrodes was found markedly more positive and the peroxide current yields appreciably higher than for electrodes made of used crushed graphite. The reason for this is the higher surface area of the electrodes containing carbon black and occurrence of a three-phase interface in them. The relevant properties, i.e. electric resistance, electrolyte holdup, polarization curves for the oxygen reduction and pexide current yields, were also studied for trickle electrodes containing graphite felt. The electrochemical activity of electrodes made from untreated felt was found rather low but it increased several times when felt pretreated by oxidation was used.

Simultaneous High Conversion and Selectivity in Olefin Oxidation with Oxygen Through Solid/Liquid/Gas Three‐Phase Interface Design

ChemCatChem ◽  
2019 ◽  
Vol 11 (18) ◽  
pp. 4524-4528 ◽  
Author(s):  
Zhaohua Li ◽  
Changyan Cao ◽  
Zhongpeng Zhu ◽  
Lei Jiang ◽  
Weiguo Song
Keyword(s):  
Interface Design ◽  
Phase Interface ◽  
High Conversion ◽  
Olefin Oxidation ◽  
Three Phase ◽  
Solid Liquid

Catalytic Reduction of CO[sub 2] to Ethylene by Electrolysis at a Three-Phase Interface

2003 ◽  
Vol 150 (9) ◽  
pp. D163 ◽  
Author(s):  
Kotaro Ogura ◽  
Hiroshi Yano ◽  
Fukutaro Shirai
Keyword(s):  
Catalytic Reduction ◽  
Phase Interface ◽  
Three Phase

scholarly journals Influence of the Catalyst Layer Structure Formed by Inkjet Coating Printer on PEFC Performance

Polymers ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 899
Author(s):  
Yushi Tamaki ◽  
Kimihiko Sugiura
Keyword(s):  
Layer Structure ◽  
Mixing Layer ◽  
Phase Interface ◽  
Single Layer ◽  
Catalyst Layer ◽  
Polymer Electrolyte Fuel Cell ◽  
Membrane Electrode ◽  
Electrode Area ◽  
Three Phase ◽  
Electrode Assemblies

In this study, we investigated the influence of the Catalyst-Layer (CL) structure on Polymer Electrolyte Fuel Cell (PEFC) performance using an inkjet coating printer, and we especially focused on the CL thickness and the electrode area. In order to evaluate the influence of CL thickness, we prepared four Membrane Electrode Assemblies (MEAs), which have one, four, five and six CLs, respectively, and evaluated it by an overpotential analysis. As a result, the overpotentials of an activation and a diffusion increased with the increase of thickness of CL. From Energy Dispersive X-ray spectroscopy (EDX) analysis, because platinum twines most ionomers and precipitates, the CL separates into a layer of platinum with a big grain aggregate ionomer and the mixing layer of platinum and ionomer during the catalyst ink drying process. Consequently, the activation overpotential increased because the three-phase interface was not able to be formed sufficiently. The gas diffusivity of the multilayer catalyst electrode was worse than that of a single layer MEA. The influence of the electrode area was examined by two MEAs with 1 and 9 cm2 of electrode area. As a result, the diffusion overpotential of 9 cm2 MEA was worse than 1 cm2 MEA. The generated condensate was multiplied and moved to the downstream side, and thereafter it caused the flooding/plugging phenomena.

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