Flow Rate: 60ml/min ~ 500 ml/min
Flow Rate: 7000ml/min ~ 50Nm³
Flow Rate: 60Nm³/Hr ~ 200Nm³/Hr
Flow Rate: 60ml/min ~ 500 ml/min
High-Performance PEM Eletrolyzer for Hydrogen Generation
Aerospace-Grade PEM Electrolyzer to Power Robust Hydrogen Generation
Hovogen provides the high-efficiency electrochemical "heart" for your hydrogen generators. Our PEM stacks are engineered for seamless integration, offering industry-leading current density and a 30-year legacy of failure-proof performance in the most demanding environments.
Laboratory & Analytical PEM Stacks (Small Capacity)
Output Range: 60 ml/min to 5,000 ml/min
Feature
Engineered specifically for OEM integration in analytical instruments, gas chromatography (GC), and benchtop R&D, our compact PEM electrolyzer stacks deliver continuous, ultra-pure hydrogen on demand.
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Electrochemical Efficiency & Purity: Our stacks utilize a proprietary Catalyst Coated Membrane (CCM) that achieves high current density at exceptionally low cell voltages. This advanced water-splitting process maximizes hydrogen yield per watt and guarantees 99.999% (Grade 5.0) gas purity directly from the stack—ideal for sensitive GC-FID/NPD applications.
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Aerospace-Grade Reliability: Built for continuous, zero-maintenance duty cycles. By utilizing corrosion-resistant titanium bipolar plates and optimized internal flow fields, these modules eliminate the degradation issues common in standard lab generators. The S-Series is engineered for an operational lifespan exceeding 40,000 hours without a drop in performance or purity.
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Seamless OEM Integration: Operating safely on pure deionized (DI) water (<1 μS/cm) with no caustic chemicals required, the compact footprint allows for easy integration into desktop enclosures and localized micro-grids.
Application
1. Research and Development: This electrolyzer is perfect for research laboratories and academic institutions conducting experiments requiring on-site hydrogen generation.
2. Energy Storage: It can be utilized in renewable energy systems to store excess energy in the form of hydrogen for later use, contributing to grid stability and energy management.
3. Fuel Cells: The produced hydrogen can be used as a clean fuel source for fuel cells in applications such as backup power systems, portable electronics, or small vehicles.
4. Specialty Gas Production: It can be employed in industries requiring small quantities of high-purity hydrogen for processes like semiconductor manufacturing, metal processing, or chemical synthesis.
5. Education and Training: The electrolyzer can serve as an educational tool in schools and training centers to demonstrate principles of electrolysis and hydrogen production.
CH60-1 (60ml/min)
CH2-1 (300ml/min)
CH6-1 (1000ml/min)
CHL5-1 (2000ml/min)
CH01-1 (100ml/min)
CH4-1 (600ml/min)
CH7-1 (1200ml/min)
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CH8-1 (3200ml/min)
CH02-1 (200ml/min)
CH5-1 (800ml/min)
CH11-1 (2000ml/min)
CHL13-1 (5000ml/min)
Commercial & Industrial PEM Stacks (Medium Capacity)
Output Range: 1 Nm³/h to 10 Nm³/h (Approx. 5kW to 50kW)
Feature
Designed for seamless integration into hydrogen refueling stations (HRS), power plant cooling systems, and semiconductor manufacturing, the M-Series bridges the gap between laboratory research and utility-scale production.
Optimized Electrochemical Efficiency: Utilizing a high-performance Catalyst Coated Membrane (CCM) architecture, these stacks operate at a voltage efficiency of 74% to 82% (LHV). The advanced flow-field design ensures uniform current distribution at densities of 2.0–2.5 A/cm², significantly reducing the levelized cost of hydrogen (LCOH) for mid-sized industrial applications.
Industrial-Grade Durability & Reliability: Engineered for 24/7 continuous duty cycles, our commercial and Industrial stacks feature titanium bipolar plates with specialized anti-corrosion coatings. This aerospace-derived construction prevents metal ion leaching and membrane poisoning, delivering a verified operational lifespan of 40,000+ hours with ultra-low voltage degradation (<10 μV/cell/hr).
High-Pressure On-Demand Generation: Capable of producing 99.999% pure hydrogen at a differential pressure of 3.2 MPa (32 bar). This eliminates the need for initial-stage mechanical compressors, reducing the total footprint and complexity of your Balance of Plant (BOP).
Application
Ideally suited for a variety of applications across different industries. Some key application scenarios include:
1. Research and Development: This electrolyzer is perfect for research laboratories and academic institutions conducting experiments requiring on-site hydrogen generation.
2. Energy Storage: It can be utilized in renewable energy systems to store excess energy in the form of hydrogen for later use, contributing to grid stability and energy management.
3. Fuel Cells: The produced hydrogen can be used as a clean fuel source for fuel cells in applications such as backup power systems, portable electronics, or small vehicles.
4. Specialty Gas Production: It can be employed in industries requiring small quantities of high-purity hydrogen for processes like semiconductor manufacturing, metal processing, or chemical synthesis.
5. Education and Training: The electrolyzer can serve as an educational tool in schools and training centers to demonstrate principles of electrolysis and hydrogen production.
Megawatt & Utility-Scale PEM Stacks (Industrial Capacity)
Output Range: 50 Nm³/h to 300 Nm³/h (Approx. 250kW to 1.5MW+)
Feature
The MW-Class stack is engineered for large-scale green hydrogen infrastructure, including hydrogen refueling stations (HRS), green ammonia synthesis, and industrial-scale energy storage. With a modular architecture that scales seamlessly from 250kW to multi-megawatt arrays, these stacks are the benchmark for high-volume, high-pressure hydrogen production.
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High-Density Power Conversion: Utilizing a specialized, low-iridium Catalyst Coated Membrane (CCM), the L-Series operates at current densities exceeding 2.5 A/cm². This results in a stack-level energy consumption of <4.2 kWh/Nm³, significantly lowering the operational expenditure (OPEX) for utility-scale hydrogen projects.
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Rapid Dynamic Response for Grid Balancing: Our stacks are optimized for "Behind-the-Meter" integration with intermittent renewable assets (Wind/Solar). The L-Series can modulate from 5% to 100% load in seconds, allowing operators to monetize grid-balancing services and capture peak renewable energy that would otherwise be curtailed.
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Tier-1 Industrial Durability: Designed for a 20-year service life with a target of 60,000 to 80,000 operational hours. The L-Series features aerospace-proven titanium bipolar plates with proprietary vacuum-plasma spray coatings. This ensures zero-leakage performance and minimal voltage degradation under the thermal stresses of high-capacity operation.
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Turnkey OEM Integration: Standardized fluid and electrical interfaces allow for rapid integration into 20ft or 40ft containerized Balance of Plant (BOP) systems.
Application
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Hydrogen Production：Our PEM electrolyzers are designed specifically for efficient hydrogen production through water electrolysis. Powered by renewable energy sources such as wind, solar, and hydropower, they contribute to a sustainable hydrogen economy.
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Chemical Industry：In the chemical sector, our electrolyzers serve as a reliable source of hydrogen for various synthesis processes. Hydrogen is essential for the production of ammonia for fertilizers, methanol for fuels and chemicals, and various petrochemicals.
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Metal Plating：In the metal finishing industry, our PEM electrolyzers generate hydrogen for electroplating processes. Hydrogen reduces metal ions, enhancing the quality and durability of metal coatings.
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Power-to-X Applications：The versatility of hydrogen produced by our PEM electrolyzers enables its use in Power-to-X applications, where excess renewable energy is converted into hydrogen and subsequently transformed into other fuels or chemicals (e.g., synthetic natural gas, methanol).
Why Choose Hovogen PEM Stacks?
We don't just sell hardware; we provide the technological foundation for your energy systems. Our stacks are designed to be the most reliable component in your Bill of Materials (BOM).
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Advanced Membrane Electrode Assembly (MEA): Built with low-iridium loading and proprietary GDL (Gas Diffusion Layer) coatings to reduce degradation.
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Metallic Bipolar Plates: Optimized flow field design ensures uniform current distribution and superior thermal management.
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Ultra-High Differential Pressure: Capable of generating hydrogen at 7 MPa (70 bar) directly from the stack, reducing the need for downstream mechanical compression.
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Aerospace Pedigree: Our stack architecture is derived from the Chinese Tiangong space station life-support systems—engineered for zero-maintenance and extreme durability.
Designed for Simple Balance-of-Plant (BOP) Integration
We understand that a stack is only as good as its integration. Hovogen provides full technical documentation to help your engineers design the surrounding system:
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Thermal Modeling: Detailed heat dissipation maps for cooling loop sizing.
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Control Logic: Suggested PID parameters for pressure and flow control.
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Mounting & Footprint: Compact, skid-ready designs with standardized fluid connections.
Product Customization
In order to meet the specific needs of customers in different industries and fields, all products can be customized according to requirements. After many years of development, we have accumulated practical experience in many industries. For more details, please check out our projects, or talk to us.
FAQ
I. Performance & Efficiency
Q: What is the stack-level energy consumption per Nm³ of Hydrogen? A: Hovogen PEM stacks typically operate at 3.8 to 4.4 kWh/Nm³ at the stack level (BOL - Beginning of Life). This translates to a voltage efficiency of approximately 74% to 82% (LHV). When designing your Balance of Plant (BOP), total system efficiency will depend on your chosen power electronics and cooling system.
Q: How does Hovogen achieve high current density without rapid degradation? A: We utilize a proprietary CCM (Catalyst Coated Membrane) fabrication process. By optimizing the interface between the Iridium-based anode catalyst and the Nafion™-based membrane, we achieve current densities of 2.0–2.5 A/cm² while maintaining ultra-low voltage decay.
II. Integration & Mechanical Specs
Q: Can the stack operate at high differential pressures? A: Yes. Our stacks are designed for high-pressure cathode operation (up to 7 MPa / 70 bar) while the anode remains at near-ambient pressure. This "differential pressure" capability is a core feature of our aerospace-derived architecture, allowing you to eliminate or downsize costly hydrogen compressors in your final system design.
Q: What are the requirements for the cooling loop? A: Our stacks require deionized (DI) water cooling to manage the exothermic reaction. For our M-Series and L-Series, we recommend a liquid cooling loop capable of maintaining an outlet temperature between 55°C and 70°C. Detailed thermal dissipation maps (heat load vs. current) are provided in our Integration Guide.
III. Durability & Material Science
Q: What is the expected "End of Life" (EOL) criteria for a Hovogen stack? A: We define EOL as a 10% increase in operating voltage or a significant drop in gas purity (cross-over). Under nominal conditions, our stacks are engineered for a 40,000 to 60,000-hour lifespan. This is achieved through titanium-based bipolar plates with specialized anti-corrosion coatings.
Q: How sensitive is the stack to water impurities? A: PEM stacks are highly sensitive to metal ions (Fe, Cu, Cr). We require feed water quality of ASTM Type II (Resistivity >1 MΩ·cm). Using water outside of these specs will lead to "membrane poisoning," which is the leading cause of premature stack failure.
IV. Comparison & Integration
Q: Why should an OEM choose a Hovogen Stack over an Alkaline Stack? A: For system integrators, PEM stacks offer three primary advantages: Footprint: Up to 3x higher power density than Alkaline. Dynamic Range: Our stacks can operate from 5% to 100% load, making them compatible with "behind-the-meter" solar and wind assets. Purity: Our stacks produce 99.999% pure H2 directly, reducing the complexity of your drying and purification (DeOxo) stages.
Q: Do you provide custom stack sizes or only the standard M/L Series? A: While our standard series covers 1Nm³ to 300Nm³, we are a primary manufacturer. We can customize the number of cells in a stack or adjust the active area to meet your specific voltage and flow-rate requirements for large-scale OEM contracts.