gas diffusion layer Articles
What is the Difference Between Carbon Paper and Carbon Cloth Based Gas Diffusion Layers (GDL)?
Carbon Paper Gas Diffusion Layers Carbon Paper Gas Diffusion Layers (GDL) (e.g. Sigracet, Freudenberg, Toray, etc) tend to be thinner and more brittle than Carbon Cloth Gas Diffusion Layers (e.g. ELAT™, GDL-CT). Each type has a different mass transport, porosity, hydrophobicity, and conductivity. Papers such as Toray are quite hard and brittle, with very little compressibility. These ...
ELAT-1400 Gas Diffusion Layer (GDL) Not “Discontinued”
After the original manufacturer of ELAT Gas Diffusion Layer (GDL) stopped producing the material, many of the fuel cell industry had to scramble for replacements and were continuing their projects based on inventory already purchased. We were no exception. After a fair amount of searching and evaluation, we finally found a replacement that had very similar mechanical properties. So, for a ...
What is the Purpose of a Gas Diffusion Layer (GDL)?
The Gas Diffusion Layer (GDL) plays several critical roles in a typical fuel cell application and is often integrated as part of the Membrane Electrode Assembly (MEA). Typical applications that use GDLs consist of Polymer Electrolyte Fuel Cells (PEMFC) and Direct Methanol Fuel Cells (DMFC). When a GDL is coated with a catalyst it is than referred to as a Gas Diffusion Electrode (GDE), which are ...
Porous Titanium in Next-Generation Polymer-Electrolyte-Membrane Fuel Cells
Porous titanium has found a wide variety of unique and important applications including filtration, separation, catalyst supporting, gas absorbing, gas sparging, current collection, and medical implantation. Manufacture process for porous titanium Raw titanium powder preparation—Cold isostatic pressing or rolling—Sintering in high temperature & vacuum furnace-Machined to ...
Why is Humidity / Moisture Control Important in a Fuel Cell?
The root of all of this is that Nafion membranes must stay hydrated to function properly. If they are not fully humidified the conductivity decreases and therefore more of the electricity is converted directly to heat before it leaves the membrane (I2R heating). If it gets too dry it basically stops functioning as a proton transporter. All of this sounds great since a Hydrogen Fuel Cell consumes ...
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