Effect of Components and Operating Conditions on the Performance of PEM Electrolyzers: A Review

Hydrogen is considered to be the fuel of future and with advancement cell technology, there a renewed interest in hydrogen production by electrolysis water. Among low-temperature water options, polymer electrolyte membrane (PEM) electrolyzer preferred choice due its compact size, intermittent use, connectivity renewable energy. In addition, it possible generate compressed directly PEM electrolyzer, thereby reducing additional pressurization cost for storage. The development electrocatalysts oxygen evolution reaction (OER) (HER) major focus research. Other components, such as PEMs, gas diffusion layers (GDL), bipolar plates (BPs) have also received significant attention enhance overall efficiency electrolyzers. Improvements each component or process impact on increasing energy electrolyzer. This work discusses various synthesis techniques improve dispersion OER electrocatalyst catalyst loading Various are discussed electrocatalysts, including nanostructured, core shell, electrodeposition deposit catalysts GDL. design methodology new improved GDL along fabrication electrodes passivation reduce oxidation technique BPs using Au Pt summarized effect efficiency. Finally, optimization operating conditions reviewed