The principle of hydrogen production through water electrolysis is very simple, which is to decompose water into hydrogen and oxygen through electricity. The specific method is: when direct current is passed into some electrolyte aqueous solutions, the decomposed substances have nothing to do with the original electrolyte. It is water that acts as a solvent, and the original electrolyte remains in the water. For example, sulfuric acid, sodium hydroxide, potassium hydroxide, etc. all belong to this type of electrolytes.
When electrolyzing water, since pure water has a very small degree of ionization and low conductivity, it is a typical weak electrolyte. Therefore, the aforementioned electrolyte needs to be added to increase the conductivity of the solution so that water can be electrolyzed into hydrogen and oxygen smoothly.