Good afternoon Max,

According to my AI desktop, which isn't always as reliable as I'd like:

"The main difference between AEM (Anion-Exchange Membrane) and PEM (Proton Exchange Membrane) is the ion that they transport. PEMs transport protons, while AEMs transport anions.

The main technical difference between AEM and PEM electrolyzers lies in the type of membrane used and the resulting electrochemical reactions that occur."