Materials challenges and opportunities in high-temperature steam electrolysis with geothermal heat.

Faisal, Nadimul

Abstract

High-temperature steam is critical in many industrial processes and applications, including energy production (e.g., water splitting through solid oxide steam electrolysis (SOSE) leading to hydrogen production). Coupling of SOSE with geothermal heat becomes an attractive option for sustainable hydrogen production, as geothermal energy can provide both electricity and heat, potentially reducing the energy required for the electrolysis process. However, there are significant challenges and opportunities to address for realising the full potential of SOSE in geothermal systems. While the key benefit include access to both heat and power for the electrolysis process, however, there are numerous challenges. It is well known that the geothermal fluids at high temperature often contain corrosive gases and dissolved minerals, which can corrode or scale up SOSE components like electrolyser electrodes and ceramic membranes. High-temperature chemical environment leads to significant materials and structural degradation. SOSE systems are still in the early stages of development. This presentation will include an overview regarding high-temperature geothermal heat, high temperature aggressive corrosion of materials, SOSE materials and manufacturing, coating and structural materials degradation and will provide insight to enhance the coating and structural performance for high temperature steam applications.

Citation

FAISAL, N. 2025. Materials challenges and opportunities in high-temperature steam electrolysis with geothermal heat. Presented at the 2025 Geothermal: gaining momentum, 26-27 February 2025, Aberdeen, UK: [virtual event].

• Presentation Conference Type: Presentation / Talk
• Conference Name: 2025 Geothermal: gaining momentum
• Start Date: Feb 26, 2025
• End Date: Feb 27, 2025
• Acceptance Date: Feb 26, 2025
• Publication Date: Feb 26, 2025
• Deposit Date: Feb 28, 2025
• Publicly Available Date: Feb 28, 2025
• Peer Reviewed: Peer Reviewed
• Keywords: Geothermal heat; High-temperature steam electrolysis
• Public URL: https://rgu-repository.worktribe.com/output/2720746