Standard operating conditions for alkaline electrolyzers:

 Here are some standard operating conditions for alkaline electrolyzers:

Temperature

Alkaline electrolyzers typically operate at temperatures between 60–80°C. 

Pressure

Alkaline electrolyzers can operate at atmospheric or pressurized conditions. Higher pressure requires less energy to produce compressed hydrogen, but it also reduces the gas's efficiency and purity. 

Electrolyte

Alkaline electrolyzers use an aqueous alkaline solution, such as potassium hydroxide (KOH), sodium hydroxide (NaOH), or NaCl, as an electrolyte. The electrolyte concentration is usually maintained between 25–30%. 

Electrodes

Alkaline electrolyzers have two electrodes, the anode and cathode, separated by a diaphragm. 

Current density

The typical operational current density of an alkaline electrolyzer is 0.2 to 0.4 A cm−2. 

Terminal cell voltage

The terminal cell voltage of an alkaline electrolyzer is 1.8–2.4 V. 

Alkaline electrolyzers are a reliable technology for producing green hydrogen. However, they can have high maintenance costs and low current density.