DC power and temperature control
Power and thermal management sized for the operating range
Who it is for
A 2 kW stack for system integrators building their own BoP, with measured data for technical review
HXS-2 is a stack for system integrators and customers designing their own power, circulation, separation and safety systems. Performance evidence, interfaces and service conditions must be reviewed together.
Choose this product when
- You are developing your own BoP or system and need a validated stack
- You need a spare or replacement stack for an existing system
- You want to evaluate performance and durability at stack level yourself
INTEGRATION BOUNDARY
The BoP before and after the stack remains in your integration scope
HXS-2 includes the stack, interface specifications and operating guidance; the customer designs the power, circulation, separation and safety systems.
HXS-2
23-cell stack with interfaces and operating guidance
Circulation, separation and safety
Electrolyte loop, gas-liquid separation and site safety systems
Included supply scope
- Compression-assembled stack and product-specific connection specifications
- Recommended operating conditions and available performance data
- Exterior/enclosure-only STEP model on request (internal parts and flow fields excluded)
Customer preparation
- Electrolyte circulation loop and pump (standard flow 4 L/min)
- DC power supply sized for the operating current range
- Temperature control, gas and liquid separation, hydrogen safety equipment
- Management of the anode to cathode pressure difference (a larger difference increases crossover)
Test results
23-cell full stack: performance curves and cell voltages
The label on each chart says whether it is measured, test or design-target data. Test conditions are in each chart caption.
MEASURED01
The ambient and pressurized curves show full-stack voltage across current.
i-V curve · 23-cell full stack · 0.1 M KOH · 50 °C · ambient/pressurized
MEASURED02
Individual cell voltages show the uniformity across all 23 cells.
23-cell voltage uniformity (avg 1.689 V · σ 0.010 V)
Customers
HXS-2 in customer projects
These records describe the selection purpose and application context, not customer-verified performance.
A cell development engineer chose it as the platform for their own materials
It was brought in as the stack into which their in-house cell development work would be assembled. That is why what they checked before ordering was not performance figures but the dimensions of each component.
View application context →
A stack you can load your own catalyst and membrane into
They were looking for an AEM electrolyzer in the 100 to 500 cm² range for a pilot test setup. The purpose was not finished hydrogen production but evaluating catalysts and membranes they develop themselves.
View application context →Specifications
HXS-2 specifications and supply terms
The specification table, support terms and review documents.
Complete product specifications19 items
| H₂ production | 480 NL/h · 1 kg/day (at rated 50 A) |
|---|---|
| Efficiency (HHV) | 90.0% (BOL · 0.1 M KOH · 50 °C · ambient pressure) · 44 kWh/kg-H₂ |
| Long-run validation | More than 3,000 hours of cumulative operation (23 cells) · long-run data and test conditions in the durability note |
| Rated operating condition | 0.1 M KOH · 50 °C (adjustable) |
| Operating temperature | Up to 80 °C |
| Energy use | 2 kW (at 50 A) |
| Water consumption | 420 mL/h (50 A) |
| Number of cells | 23 |
| Active area | 100 cm² (anode) / 79 cm² (cathode) |
| Dimensions | 190 × 198 × 215 mm |
| Weight | 19 kg |
| Structure | NiFe anode · Pt/C or PtRu/C cathode · AEM |
| Fluid ports | KOH IN 3/8″ PEEK tube · O₂+electrolyte OUT 3/8″ PEEK tube · H₂ two ports 1/4″ double-ferrule |
| DC terminals | M6 · torque 4–6 N·m |
| External circulation | 4 L/min (standard) |
| Instrument calibration | Flow and gas analysers calibrated under KOLAS |
| End plate | SUS316L |
| Bipolar plate | Nickel-based metallic plate |
| Material change | Yes · we confirm the operating window and validation scope together |
Support, lead time and commercial terms3 items
Service & reassembly
Disassembly and reassembly require our dedicated gaskets and a hydraulic press, so conditions are agreed with us in advance. Return service can replace only the MEA and reuse the hardware; the service scope and terms are fixed in the quotation.
Lead time & status
Available · 4 weeks from PO acceptance
Commercial terms & origin
EXW basis; DAP and other terms by agreement. Country of origin is the Republic of Korea, with certificate of origin provided.
Pricing depends on quantity and Incoterms, so it is issued as a quotation. Before asking for one, compare five years of buying cylinders against making the same hydrogen on site.
Cost vs cylinders calculator