scholarly journals High Speed, Low Cost Fabrication of Gas Diffusion Electrodes for Membrane Electrode Assemblies

2013 ◽  
Author(s):  
Emory S. DeCastro ◽  
◽  
Yu-Min Tsou ◽  
Zhenyu Liu
Keyword(s):  
High Speed ◽  
Low Cost ◽  
Gas Diffusion ◽  
Membrane Electrode ◽  
Gas Diffusion Electrodes ◽  
Membrane Electrode Assemblies ◽  
Electrode Assemblies

Fabrication of High Precision PEMFC Membrane Electrode Assemblies by Sieve Printing Method

2009 ◽  
Vol 6 (2) ◽  
Author(s):  
Alexandre B. Andrade ◽  
Martha L. Mora Bejarano ◽  
Edgar F. Cunha ◽  
Eric Robalinho ◽  
Marcelo Linardi
Keyword(s):  
Hot Pressing ◽  
Low Cost ◽  
High Volume ◽  
Gas Diffusion ◽  
Proton Exchange ◽  
Membrane Electrode ◽  
Pressing Method ◽  
Membrane Electrode Assemblies ◽  
Electrode Assemblies ◽  
Printing Technique

A sieve printing technique has been developed for the preparation of gas diffusion electrodes for proton exchange membrane fuel cells (PEMFCs). The results of the preparation of membrane electrode assemblies (MEAs) are shown to be faster and highly reproducible by using the sieve printing and hot pressing method. These results were compared with those obtained by spray and hot pressing method. The experiments were carried out in a 25 cm2 single PEM fuel cell with platinum loadings of 0.4 mg Pt cm−2 and 0.6 mg Pt cm−2 on the anode and cathode, respectively. Scanning electron microscopy analysis was used to investigate the electrodes’ morphology. The performance of the MEAs was measured by polarization curves. It was observed that the sieve printing technique is highly reproducible and significantly more accurate and faster than the spray one. Sieve printing technique can be easily scaled up and is very adequate for high volume production with low-cost. Such features allow manufacturing large active areas for power stack fabrication. In addition, this deposition technique has produced MEAs with a 39.8% higher power density at 0.6 V when compared with the spray one.

Development of Production Technology for Membrane-Electrode Assemblies With Radical Capturing Layer

2013 ◽  
Vol 10 (1) ◽  
Author(s):  
Toshiro Kobayashi ◽  
Etsuro Hirai ◽  
Hideki Itou ◽  
Takuya Moriga
Keyword(s):  
Production Technology ◽  
Mass Production ◽  
Catalyst Layer ◽  
Gas Diffusion ◽  
Membrane Electrode ◽  
Continuous Formation ◽  
Forming Technology ◽  
Membrane Electrode Assemblies ◽  
Electrode Assemblies ◽  
Opening Ratio

This paper describes the development of mass-production technology for membrane-electrode assemblies (MEA) with a radical capturing layer and verifies its performance. Some of the authors of this paper previously developed an MEA with a radical capturing layer along the boundaries between the electrode catalyst layer and the polymer membrane to realize an endurance time of 20,000 h in accelerated daily start and daily stop (DSS) deterioration tests. Commercialization of these MEAs requires a production technology that suits mass production lines and provides reasonable cost performance. After developing a water-based slurry and selecting a gas diffusion layer (GDL), a catalyst layer forming technology uses a rotary screen method for electrode formation. Studies confirmed continuous formation of the catalyst layer, obtaining an anode/cathode thickness of 55 μm (+10/−20)/50 μm (+10/−20) by optimizing the opening ratio and thickness of the screen plate. A layer-forming technology developed for the radical capturing layer uses a two-fluid spraying method. Continuous formation of an 8 μm thick (±3 μm) radical capturing layer proved feasible by determining the appropriate slurry viscosity, spray head selection, and optimization of spraying conditions.

scholarly journals A practical low-cost approach to build membrane electrode assemblies using decal transfer technique

2018 ◽  
Vol 145 ◽  
pp. 458-463
Author(s):  
Sichang Yang ◽  
Xinyu Zhang ◽  
Bo Wang ◽  
Hanzhe Huang ◽  
Zirui Zhao ◽  
...  
Keyword(s):  
Low Cost ◽  
Membrane Electrode ◽  
Cost Approach ◽  
Membrane Electrode Assemblies ◽  
Electrode Assemblies

CF4 plasma treatment for preparing gas diffusion layers in membrane electrode assemblies

2006 ◽  
Vol 161 (1) ◽  
pp. 275-281 ◽  
Author(s):  
Yi-Hao Pai ◽  
Jyh-Harng Ke ◽  
Hsin-Fu Huang ◽  
Chih-Ming Lee ◽  
Jyh-Myng Zen ◽  
...  
Keyword(s):  
Plasma Treatment ◽  
Gas Diffusion ◽  
Membrane Electrode ◽  
Gas Diffusion Layers ◽  
Diffusion Layers ◽  
Membrane Electrode Assemblies ◽  
Electrode Assemblies

Development of Production Technology for Membrane-Electrode Assemblies With Radical Capturing Layer

2011 ◽  
Author(s):  
T. Kobayashi ◽  
E. Hirai ◽  
H. Itoh ◽  
T. Moriga
Keyword(s):  
Production Technology ◽  
Mass Production ◽  
Catalyst Layer ◽  
Gas Diffusion ◽  
Membrane Electrode ◽  
Continuous Formation ◽  
Forming Technology ◽  
Membrane Electrode Assemblies ◽  
Electrode Assemblies ◽  
Opening Ratio

This paper describes the development of mass-production technology for membrane-electrode assemblies (MEA) with a radical capturing layer and verifies its performance. Some of the authors of this paper previously developed an MEA with a radical capturing layer along the boundaries between the electrode catalyst layer and the polymer membrane to realize an endurance time of 20,000 h in accelerated daily start and daily stop (DSS) deterioration tests. Commercialization of these MEAs requires a production technology that suits mass production lines and provides reasonable cost performance. After developing a water-based slurry and selecting a gas diffusion layer (GDL), a catalyst layer forming technology uses a rotary screen method for electrode formation. Studies confirmed continuous formation of the catalyst layer, obtaining an anode/cathode thickness of 55 μm (+10/−20)/50 μm (+10/−20) by optimizing the opening ratio and thickness of the screen plate. A layer-forming technology developed for the radical capturing layer uses a two-fluid spraying method. Continuous formation of an 8-μm-thick (±3 μm) radical capturing layer proved feasible by determining the appropriate slurry viscosity, spray head selection, and optimization of spraying conditions.

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