Elcotherm (Switzerland)

Elcogen introduces the 1x1 G2 stack module, an advanced solid oxide module designed for high-efficiency fuel cell and electrolysis applications. Incorporating fuel and oxidant manifolding, the Gen2 module houses a single E3000 Generation II stack, optimized for seamless integration into energy systems.A key advancement of the 1x1 G2 module is its ability to operate at higher pressures compared to its predecessor, while ensuring improved system performance and durability. Its enhanced gas sealing significantly minimizes leakage and reduces air bypass, thus improving overall efficiency. These refinements make the 1x1 G2 module a more reliable and cost-effective solution for rapid deployment.The 1x1 G2 module retains a compact footprint, allowing for easy replacement of previous generation elcoStacks® without requiring system modifications. The module operates at 650°C, benefiting from increased thermal stability and prolonged operational lifespan. In SOFC mode, the module delivers a nominal output power of 3 kW after a 75% conversion efficiency, while in SOEC mode, it enables hydrogen production at 33 kWh/kg, with a production capacity of 3 Nm3/h. Furthermore, the efficiency of hydrogen production can be maximized by integrating the 1x1 G2 module with industrial waste heat sources. The module also enables direct syngas production from water and CO₂, further expanding its industrial applicability.Designed for rigorous industrial applications, the 1x1 G2 module has undergone extensive validation under demanding conditions. It demonstrates exceptional stability during thermal and rapid current cycling, ensuring reliable performance over extended periods. Due to high efficiency, durability, and robustness, Elcogen’s 1x1 G2 module sets a new standard in solid oxide technology for industrial energy solutions. Figure 1

Solid oxide electrolysis cells (SOECs) has drawn great interest in recent years due to its high power to fuel efficiency. The technology is believed to be able to play an important role in the power-to-x (P2X) and carbon capture and utilization (CCU) applications due to its capability of CO2 electrolysis and H2O + CO2 co-electrolysis. The syngas produced from SOEC can be further catalytic converted into different higher value synthetic fuels, which is essential for the green transition of those hard-to-be-electrified sectors such as aviation and heavy transportation. Large-scale implementation of such a technology requires SOEC to be cost competitive with the current existing electrolysis technologies. High performance and long-term durability are keys to further bring down the SOEC fuel production costs. Understanding the degradation mechanisms and identifying limits for a “safe-operation-window” for which the degree of degradation is limited will help to further advance the SOEC technology to the market. In this work, the influence of operation parameters such as temperature, gas composition and reactant utilization on the SOECs’ degradation were examined with commercial solid oxide cells from Elcogen. The degradation mechanisms investigated by electrochemical impedance and post-test microstructure analysis will be presented and discussed.This work has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 838014 (C2FUEL).

Elcogen is a company providing solid oxide cell and stack solutions for fuel cell (SOFC) and electrolysis (SOEC) applications. Elcogen’s solutions are designed to operate at reduced operating temperatures but still providing high performance at affordable cost and low degradation level. Elcogen is currently expanding its manufacturing capabilities towards multi-MW annual production levels through a factory project. As a part of commercialization tasks, Elcogen is developing a demonstrator unit for steam electrolysis applications producing green hydrogen. This demonstrator unit is a part of an EU’s H2020 funded C2FUEL project. This presentation outlines the current progress of the high temperature electrolysis demonstrator development at Elcogen.

Elcogen is a company providing solid oxide cell and stack solutions for fuel cell (SOFC) and electrolysis (SOEC) applications. Elcogen’s solutions are designed to operate at reduced operating temperatures but still providing high performance at affordable cost and low degradation level. Elcogen is currently expanding its manufacturing capabilities towards multi-MW annual production levels through a factory project. As a part of commercialization tasks, Elcogen is developing a demonstrator unit for steam electrolysis applications producing green hydrogen. This demonstrator unit is a part of an EU’s H2020 funded C2FUEL project. This presentation outlines the current progress of the high temperature electrolysis demonstrator development at Elcogen.

The optimization of the interconnect material carried out in the EU funded qSOFC project is essential to the mass production of high quality solid oxide fuel cells. Combinations of three different stainless steel grade substrates (Crofer 22H, EN 1.4622 and ASTM 441) together with two different coating compositions (CeCo and CeCoMn) as well as the impact of the use of different lubricants in the forming process have been investigated. The different combinations were exposed at 650 °C in air for more than 3500 h and ASR and SEM analysis were conducted. 441 CeCo and Crofer CeCoMn showed the best performance: ASR of 8 and 14 mΩcm2 respectively after 1000 h. They also showed very good microstructure with the formation of homogenous protective oxide scales.

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