Electrolyser Test Equipment - ALDAS-Mini

HIOKI E.E. CORPORATION

Provides insights into the internal state of the cell during active electrolysis or generation via cell impedance measurement
No modifications to the existing system are needed for setup; operates seamlessly alongside existing DC power supplies and electronic loads
Simultaneously generates I-V curve and Nyquist plot in real-time, enabling measurement across a wide range of current densities
Supports simultaneous measurement of up to 8 cells in a stack, enabling comparison of individual cells under identical conditions
High-precision measurements in noisy environments for consistent, reproducible analysis
Supports various electrolysis cell types including PEMEC, SOEC, and AWE, as well as fuel cells and cell stacks

The HIOKI ALDAS-Mini (Active Line Device Analysis System) is an Electrochemical Impedance Spectroscopy (EIS) measurement system designed for visualizing the dynamic characteristics of electrolysis cells and fuel cells. The system measures impedance (R, X, θ, Z), voltage, and current during active operation, and simultaneously generates real-time I-V curves and Nyquist plots for cell performance analysis and degradation identification. It supports 1 to 8 input channels and operates in both Logging Mode and EIS Mode. The ALDAS-Mini connects to existing DC power supplies and electronic loads without requiring any modifications to the existing system. It supports electrolysis cell types including PEMEC, SOEC, and AWE, as well as fuel cells and cell stacks. The measurement current range is 100 mA to 500 A using the CT6845A sensor, with a maximum of 2000 A achievable depending on the combination of current sensors used. The measurement voltage range is 250 mV to 60 V across a frequency range of 10 mHz to 100 kHz. The system requires a Windows 11 PC (not included) connected via wired LAN.

Use Cases

Small electrolysis cell evaluation (1 cm²)
Large cell evaluation (100 cm²)
Research of electrolysis cell materials
Evaluation of material properties under actual operating conditions
Cell health analysis throughout its lifecycle to optimize operating conditions

Capabilities

Performs EIS measurements over a frequency range of 10 mHz to 100 kHz
Measures impedance (R, X, θ, Z), voltage, and current simultaneously
Supports 1 to 8 input channels
Measurement voltage range of 250 mV to 60 V
Measurement current range of 100 mA to 500 A (CT6845A sensor); maximum 2000 A depending on sensor combination
Maximum applied measurement signal of 40 Ap-p at 5 V; derating applies for voltages above 5 V
Simultaneously displays I-V curve and Nyquist plot in real-time; impedance calculated from measured current and voltage
Supports equivalent circuit analysis via export in Scribner ZView® format
Enables EIS measurement at high current densities up to 2000 A, allowing evaluation of industrial-scale cells and stacks during actual operation
Compatible with PEMEC, SOEC, AWE, and other electrolysis cell types, as well as fuel cells and cell stacks

HIOKI E.E. CORPORATION Hioki Corporation supplies advanced electrical measurement solutions tailored for hydrogen energy R&D, including fuel cells and water electrolysis systems. Their precision testing instruments are engineered to evaluate and optimize hydrogen production efficiency, ensuring safety and performance in the emerging green energy supply chain.

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