AEM Electrolysis

Anion exchange membrane (AEM) hydrogen electrolysis is a technology used for splitting water molecules into hydrogen and oxygen using electricity. AEM electrolysis is at the early, pre-commercial development stage. The AEM electrolyzer consists of 3 main compartments: cathode side, anode side and membrane. The cathode side is connected to the negative side of the DC power supply and the anode side is connected to the positive side. These two sides are separated using a solid polymeric membrane. This membrane will only allow negative ions to pass through; hence the term anion exchange membrane. Water molecules react with electrons on the cathode side in the presence of electro-catalyst materials and produce hydroxyl (OH-) ions and hydrogen molecules. The hydrogen molecules leave the cell as products and hydroxyl ions transfer to the anode side to recombine and produce oxygen molecules and electrons.