What Nafion Membrane Thickness is Right for an Electrolyzer / Hydrogen Generation?

Nafion membranes come in many different thickness and types.  How do you know which to choose when designing an electrolyzer (hydrogen generator)?Choosing the proper thickness depends primarily on the differential pressure you expect across the membrane (i.e. what pressure you will be generating the hydrogen at vs. the oxygen), the type of support the membrane will have, and the operating lifetime (both hours and on/off cycles). Our Standard … [Read more...]

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 this sounds great since a Hydrogen Fuel Cell consumes Hydrogen and Oxygen to generate electricity and water, so you would think there should be plenty … [Read more...]