PEM Generator VS Alkaline Generator
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PEM Hydrogen Generator VS Alkaline Hydrogen Generator

PEM Hydrogen Generator VS Alkaline Hydrogen Generator
PEM Hydrogen Generator VS Alkaline Hydrogen Generator

Catalyst

PEM : All PEM hydrogen Generator needs is pure water

Alkaline : It needs a strong base catalyst like KOH or NAOH

Corrosive

PEM : Not corrosive

Alkaline : Corrosive gas will be attached in the application process

PS : Due to corrosiveness, Alkaline Electrolyzer cannot be used in certain scenarios, such as hydrogen inhalation machine, hydrogen car kit, etc.it can cause harm to your body or car

Work Life

PEM : 10000h+

Alkaline : Depends on your usage and material and voltage.20h-5000h.

Material

PEM : Titanium alloy and ruthenium oxide   or    Titanium alloy and iridium oxide. PS : iridium oxide is the best, but it’s more expensive.

Alkaline : Commonly used are 304ss,316Lss or Cu-Ni alloy. PS : 304ss is the worst material.The pros and cons of 316Lss and Cu-Ni alloy depend on how they are used.In fact, there is a better material, but the price is too expensive and will not be introduced for the time being. If you are interested, you can send us an email.

Current Densities

PEM : 1.5-3A/cm2

Alkaline : 0.2-0.4A/cm2

Hydrogen purity

PEM : 99.9995% .The impurities are mainly water vapor

Alkaline : 99.98%. Impurities are mainly corrosive gases and water vapor

Maintain

PEM : Small PEM equipment requires little maintenance.Just add pure water

Alkaline : Due to chemical corrosion and damage to equipment and components, maintenance costs are high and maintenance time is long.Electrolyte to be drained during system component repairs.

Price

PEM : Using precious metal catalysts, high cost

Alkaline : No precious metal catalyst, low cost

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