Energy-Efficiency Calculations of a Polymer-Electrolyte Membrane (PEM) Electrolyzer Utilizing Pt-Ag, Pt-Au, or Pt-Ir as an Anode Electrocatalyst

2012 ◽  
Keyword(s):  
Energy Efficiency ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Membrane ◽  
Electrolyte Membrane ◽  
Pem Electrolyzer

Stability Evaluation for Polymer Electrolyte Membrane Eletrolyzer

2012 ◽  
Vol 260-261 ◽  
pp. 443-448 ◽  
Author(s):  
Hong Gun Kim ◽  
Hee Jae Shin ◽  
Yun Ju Cha ◽  
Sun Ho Ko ◽  
Hyun Woo Kim ◽  
...  
Keyword(s):  
Flow Field ◽  
Polymer Electrolyte ◽  
Current Density ◽  
Polymer Electrolyte Membrane ◽  
Cell Voltage ◽  
Average Cell ◽  
Electrolyte Membrane ◽  
Field Plate ◽  
Pem Electrolyzer ◽  
The Cost

Recently, polymer electrolyte membrane (PEM) electrolyzers consist of the layered structure of membrane and electrode assembly (MEA), titanium flow field plate, gasket, end plate, and others. Among these components, MEA and titanium flow field plate take account for most of the device cost. The cost and time for manufacturing device can be reduced with the gasket-integrated 3-D mesh-applied PEM electrolyzer (Fig. 3), while maintaining the same performance as that of the existing titanium flow field plate devices. The 3-D mesh is found to perform the roles of the existing flow plate which ensures the smooth fluid flow and uniform power supply. The voltage shows 19.3V at current density (0.5 A/cm2), a little lower than 19.6V that is 10 times of 1.96V which is the average cell voltage at the same current density. In addition, hydrogen production and stability for performance are equal to or higher than that of the device for titanium flow field plate.

Energy Efficiency Enhancement of Ethanol Electrooxidation on Pd-CeO2/C in Passive and Active Polymer Electrolyte-Membrane Fuel Cells

ChemSusChem ◽  
2012 ◽  
Vol 5 (7) ◽  
pp. 1266-1273 ◽  
Author(s):  
Valentina Bambagioni ◽  
Claudio Bianchini ◽  
Yanxin Chen ◽  
Jonathan Filippi ◽  
Paolo Fornasiero ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Fuel Cells ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Membrane ◽  
Ethanol Electrooxidation ◽  
Efficiency Enhancement ◽  
Electrolyte Membrane

The Design and Performance Study of Polymer Electrolyte Membrane Using 3-D Mesh

2017 ◽  
Vol 737 ◽  
pp. 393-397
Author(s):  
Alexandre Tugirumubano ◽  
Kyoung Soo Kim ◽  
Hee Jae Shin ◽  
Chang Hyeon Kim ◽  
Lee Ku Kwac ◽  
...  
Keyword(s):  
Flow Field ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Membrane ◽  
Total Power ◽  
Titanium Mesh ◽  
Bipolar Plates ◽  
Performance Study ◽  
Electrolyte Membrane ◽  
Production Of Hydrogen ◽  
Pem Electrolyzer

The production of hydrogen and oxygen using the water electrolysis technology is mostly influenced by the performance and efficiency of the components that are used in the production systems. In this study, the flow field’s channels of the bipolar plates of polymer electrolyte membrane electrolyzer were replaced by 3-D titanium mesh, and the polymer electrolyte membrane (PEM) electrolyzer cell that uses 3-D titanium mesh was designed. A numerical analysis was conducted to study the performance of the designed model. By comparing the results with the electrochemical performance of PEM electrolyzer cell with flow field channels on the plates, it was found that the cell with 3-D titanium mesh has greater performance and higher total power dissipation density. Therefore, the use of 3-D mesh can be used instead of machining the flow field channels on the bipolar plates.

Porous Transport Layer Related Mass Transport Losses in Polymer Electrolyte Membrane Electrolysis: A Review

2016 ◽  
Author(s):  
Chung Hyuk Lee ◽  
Rupak Banerjee ◽  
Faraz Arbabi ◽  
James Hinebaugh ◽  
Aimy Bazylak
Keyword(s):  
Mass Transport ◽  
Polymer Electrolyte ◽  
Structural Parameters ◽  
Polymer Electrolyte Membrane ◽  
Electrical Conductance ◽  
Transport Layer ◽  
Electrolyte Membrane ◽  
Voltage Loss ◽  
Transport Losses ◽  
Pem Electrolyzer

The unintended accumulation of oxygen gas in polymer electrolyte membrane (PEM) electrolyzers has been recently identified as one of the main hurdles to achieving high cell efficiencies. Oxygen is a by-product of the electrochemical reaction used to produce hydrogen, and this oxygen must be removed in order to reduce mass transport losses. The porous transport layer (PTL) is a key component of the PEM electrolyzer which facilitates mass transport and electrical conductance. However, oxygen bubble accumulation potentially dominates the total mass transport losses during operation. Many experimental and computational studies have been performed in an attempt to understand the relationship between the morphology of the PTL and the voltage loss of the electrolyzer, but this relationship has yet to be fully defined. In this work, efforts towards identifying and understanding mass transport losses are discussed. PTL structural parameters that were shown to affect performance, such as bulk porosity, particle size, pore size, thickness, and permeability are reviewed. Visualization techniques that have been employed to investigate the behavior of oxygen bubbles are also discussed. This work presents a summary of the studies which have been performed to investigate the key parameters of the PTL that should be tailored for improved PEM electrolyzer performance.

The Operation of Polymer Electrolyte Membrane Fuel Cell using Hydrogen Produced from the Combined Methanol Reforming Process

2016 ◽  
Vol 7 (2) ◽  
pp. 146-152
Author(s):  
Sang Sun Park ◽  
Yukwon Jeon ◽  
Jong-Man Park ◽  
Hyeseon Kim ◽  
Sung Won Choi ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Membrane ◽  
Methanol Reforming ◽  
Electrolyte Membrane
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