// Test rigs

Potentiostats with measuring cells which can be heated in order to examine individual electrodes with cathode or anode coatings in one measuring cell.

• Determination of overvoltage, board gradient and active surface with a reference electrode
• Active cell area 1 - 3 cm²
• Current densities up to 1,500 mA/cm²
• Electrochemical impedance spectroscopy (EIS)
• Linear sweep voltammetry (LSV)
• Cyclic voltammetry (CV)
• Variation of leaching conditions possible (Raney nickel)

Single 3 cm² measuring cell for the examination of individual electrodes and membranes with cathode or anode coatings in one measuring cell.

• Cell voltages comparable to 100 cm² and 5 barg
• Active cell area 3 cm²
• Current densities up to 1,500 mA/cm²
• Temperature up to 80 °C
• Electrochemical impedance spectroscopy (EIS)
• Variation of leaching conditions possible (Raney nickel)

Test array for the examination of individual electrodes and membranes with cathode or anode coatings in up to 8 measuring cells.

• Electrode surface 3 cm²
• 8 channels of up to 10 A each
• 1 potentiostat available for alternate use for 1 channel for EIS tests
• Temperature up to 80 °C
• Automated running of load profiles
• 24-hour operation

Test rig for examination and validation of electrode coatings, electrode packages, membranes, cell frames and seals.

• Stacks with up to 20 cells
• Current densities up to 2500 mA/cm²
• Output up to 10 kW_el
• Pressure up to 16 barg
• Temperature up to 80 °C
• Single cell voltage measurements
• Single cell EIS (in the pipeline)
• 24-hour operation

Test rig for examination of electrolysis stacks and stack components.

• Double rectifier with 2 outputs:
  1. DC up to 5,000 A; DC voltage up to 25 V
  2. DC up to 2,500 A; DC voltage up to 50 V
• Cell areas up to approx. 6,000 cm²
• Max. H₂ production 18 Nm³/h
• Pressure up to 16 barg
• Temperature up to 70 °C

Test rig for examination of long stacks and system components in a real environment.

• DC up to 1800 A
• DC voltage up to 300 V
• Stacks with up to approx. 3,000 cm² cell area
• Max. H₂ production 80 Nm³/h
• Pressure up to 30 barg
• Temperature up to 75 °C
• 24-hour operation

Test rig for examination of large short and long stacks.

• DC up to 5400 A
• DC voltage up to 150 V
• Stacks up to approx. 10,000 cm² (stack compartment WxHxD 2.7 m x 2.6 m x 2 m)
• Max. H₂ production 80 Nm³/h
• Pressure up to 30 barg
• Temperature up to 75 °C
• 24-hour operation

Test rig for examination of short stacks with very large diameters/ cell areas.

• DC up to 20,000 A
• DC voltage up to 50 V
• Stacks up to approx. 40,000 cm² (stack compartment WxHxD 3.1 m x 3.5 m x 2 m)
• Max. H₂ production 80 Nm³/h
• Pressure up to 30 barg
• Temperature up to 75 °C
• 24-hour operation