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AEM Electrolysers for Hydrogen Production (Enapter)

Enapter's AEM Electrolyser is an innovative device that delivers equivalent performance to PEM electrolyser at lower cost.


Product Description

AEM (Anion Exchange Membrane) electrolyser is a hydrogen production device that combines the advantages of alkaline electolyser and PEM electrolyser. It overcomes the traditional weakness of alkaline electrolyser like hydrogen purity, responsiveness of load change, and intermittent operation. We provide this with low cost, as it avoids using noble metal catalysts used in PEM electrolyser. Additionally, the quantity of generated hydrogen can be increased by stacking small AEM stack modules, therefore despite if one stack fails to operate, it will not prevent the entire hydrogen production device to halt, enabling a highly reliable operation.

3 Key Features of
AEM Water Electrolysis Hydrogen Production Equipment

  • POINT01

    Generate High-pressure, High-Purity Hydrogen


    High purity hydrogen at 99.999% can be produced at a pressure of 3.5MPaG. The electrode reaction mirrors that of alkaline water electrolysis, yet AEM achieves this without the use of highly corrosive concentrated alkaline solutions. Utilizing a membrane electrode assembly (MEA) cell structure akin to PEM water electrolysis, it offers rapid response times, a broad operating spectrum, and intermittent operation capabilities.

  • POINT02

    Achieve Low Cost Without the Use of Noble Metals


    PEM electrolyser uses Proton (H⁺) as a carrier which results in an acidic environment, requiring the use of noble metals in the electrode catalyst and gas diffusion layer. On the other hand, AEM electrolyser uses hydroxide ions (OH⁻) as a carrier, which results in a weak alkaline environment. Therefore, in AEM electrolyser, there is no need to deploy noble metal catalysts, yielding low costs. Additionally, as the amount of water discharged from the cathode is minimal in AEM(dry cathode), The electrolyte circulation on the cathode side is not required and therefore the system can be simplified without gas separator, circulation pump and pipings.

  • POINT03

    Modular operations enable continuous functionality,
    even in the event of component damage


    Each AEM stack has the capacity to produce 0.5Nm³ of hydrogen per hour using 2.4kw of electricity. By stacking multiple units, it becomes feasible to generate hydrogen on a MW scale (~210Nm³ per hour). With its modular architecture, if a stack encounters an issue, only the affected unit needs repair or replacement. This approach contrasts sharply with large-scale hydrogen production equipment, significantly reducing maintenance requirements.
    Since the system can operate without interruption, production lines can remain active, ensuring business continuity.

Maintenance & After-sales Service for AEM electrolysers

Mikuni Kikai Kogyo is able to provide maintenance services by their service engineers who duly had official maintenance training for AEM electrolysers by Enapter. You can refer to the Certificate herewith on this subject.

Training Certificate Mikuni Kikai Kogyo 2025 signed

Expected Use Cases and Applicable Industries

  • Demonstration Experiment
  • General Contractor
  • Plant Manufacturer
  • Hydrogen Station
  • Semi-conductor Plant
  • Combustion Plant
  • Fuel Cell Operation
  • Biomass Power Facility, Renewable Energy Facility
  • Industrial Waste Management Firm