An in-depth analysis of the most promising clean hydrogen production technology
PEM water electrolysis is considered the most suitable hydrogen production technology for the fluctuating input of renewable energy, making it a key technical path to achieving green hydrogen energy.
Based on the working principle and electrolyte, water electrolysis technologies can be divided into four types: Alkaline (ALK), Proton Exchange Membrane (PEM), High-Temperature Solid Oxide (SOEC), and Anion Exchange Membrane (AEM).
From a technical perspective, PEM water electrolysis technology features a high current density, small electrolyzer volume, and flexible operation, making it highly suitable for rapid load changes and better matched with the fluctuating nature of wind and solar power.
Although PEM technology has a promising future, it still faces challenges in cost, materials, and manufacturing processes that need to be overcome.