Project Objectives

The GrInHy project aims to activate significant cost-cutting potential of high temperature electrolysers. Additional value will be created if the electrolyser system is able to work in a reversible mode using a reversible Solid Oxide Cell (rSOC). The project will be integrated and operated at the iron and steel works from Salzgitter Flachstahl.

Technical objectives:

• Increase the power of a single stack up to 120 kW while automatizing the production process at the manufacturer
• Increase the lifetime of stacks by reaching a degradation rate <1%/1000 h during 10,000 h of operation.
• Control the purity of the produced hydrogen during 7000 h of operation

Economic objective:

• Reach a milestone of the technology roadmap with regard to size/cost of the system and including reversibility.

EIFER’s Contribution

From cells to modules (stack + hotbox) tests.

Lab technical objectives:

• Electrical and electrochemical impedance spectroscopy measurements for performance and durability analysis
• Influence od operation parameters (current, temperature, gas compositions, steam-to-hydrogen conversion rate.