PEM : All PEM hydrogen Generator needs is pure water
Alkaline : It needs a strong base catalyst like KOH or NAOH
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
PEM : 10000h+
Alkaline : Depends on your usage and material and voltage.20h-5000h.
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.
PEM : 1.5-3A/cm2
Alkaline : 0.2-0.4A/cm2
PEM : 99.9995% .The impurities are mainly water vapor
Alkaline : 99.98%. Impurities are mainly corrosive gases and water vapor
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.
PEM : Using precious metal catalysts, high cost
Alkaline : No precious metal catalyst, low cost