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Techno-economic analysis of high-temperature SOEC-based hydrogen production: A multi-factor assessment

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  • Liu, Maoqing
  • Wang, Wei
  • Liu, Wei
  • Zhang, Yongliang
  • Guo, Binrong
  • Han, Minfang

Abstract

High-temperature solid oxide electrolysis (SOEC) enables the direct coupling of industrial steam, electricity, and hydrogen production, offering a promising pathway for deep decarbonization of energy-intensive industries. This study investigates an SOEC system integrated with a high-temperature steam source from a steel plant, in which the produced hydrogen can be directly utilized for hydrogen-based metallurgy, while oxygen is recovered as a valuable byproduct via oxygen-electrode sweep. Based on constraints imposed by electrochemical performance, steam utilization, and system-level thermal balance, a coupled operating framework for industrial SOEC systems is defined. Three operating configurations are systematically compared: liquid water electrolysis with air sweep (SOEC-L-Air), steam electrolysis with air sweep (SOEC-V-Air), and steam electrolysis with oxygen sweep (SOEC-V-O2).

Suggested Citation

  • Liu, Maoqing & Wang, Wei & Liu, Wei & Zhang, Yongliang & Guo, Binrong & Han, Minfang, 2026. "Techno-economic analysis of high-temperature SOEC-based hydrogen production: A multi-factor assessment," Energy, Elsevier, vol. 359(C).
    • Handle: RePEc:eee:energy:v:359:y:2026:i:c:s036054422601577x
    DOI: 10.1016/j.energy.2026.141471
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