PEM stands for Proton Exchange Membrane, it's a type of electrolyzer that uses a proton exchange membrane to separate the hydrogen and oxygen gas produced during electrolysis. This membrane acts as a selective barrier that allows protons (H+) to pass through, but not electrons. The Proton Exchange Membrane (PEM) electrolyzer consists of two electrodes, typically made of platinum, which are separated by the Proton Exchange Membrane (PEM). When an electric current is applied, water molecules at the anode (negative electrode) are split into hydrogen ions (H+) and oxygen gas, while at the cathode (positive electrode), the hydrogen ions combine with electrons to form hydrogen gas.

 

Proton Exchange Membrane (PEM) electrolyzers are typically more efficient than other types of electrolyzers such as alkaline electrolyzers, and they also have a faster response time. This makes them well suited for use in fuel cell systems and other applications where a fast response time is required. They are also relatively compact and lightweight, making them easy to transport and install. However, Proton Exchange Membrane (PEM) electrolyzers can be sensitive to temperature and humidity, which can affect their performance.

 

The proton exchange membrane, typically made of Nafion, is a key component of Proton Exchange Membrane (PEM) electrolyzers. The membrane's properties such as permselectivity, proton conductivity, and chemical stability are critical for the electrolysis performance. Furthermore, the membrane's cost and durability are also important factors that need to be considered when designing and operating Proton Exchange Membrane (PEM) electrolyzers.