System-Supporting Operation of Solid-Oxide Electrolysis Stacks

Dominik Schäfer, Tomke Janßen, Qingping Fang, Frank Merten and Ludger Blum
Additional contact information
Dominik Schäfer: Institute of Electrochemical Process Engineering (IEK-14), Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Str., D-52428 Jülich, Germany
Tomke Janßen: Research Department Future Energy and Industry Systems (SYS), Wuppertal Institut für Klima, Umwelt, Energie gGmbH, Döppersberg 19, D-42103 Wuppertal, Germany
Qingping Fang: Institute of Electrochemical Process Engineering (IEK-14), Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Str., D-52428 Jülich, Germany
Frank Merten: Research Department Future Energy and Industry Systems (SYS), Wuppertal Institut für Klima, Umwelt, Energie gGmbH, Döppersberg 19, D-42103 Wuppertal, Germany
Ludger Blum: Institute of Electrochemical Process Engineering (IEK-14), Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Str., D-52428 Jülich, Germany

Energies, 2021, vol. 14, issue 3, 1-18

Abstract: Flexible, system-oriented operating strategies are becoming increasingly important in terms of achieving a climate-neutral energy system transformation. Solid-oxide electrolysis (SOEC) can play an important role in the production of green synthesis gas from renewable energy in the future. Therefore, it is important to investigate the extent to which SOEC can be used flexibly and which feedback effects and constraints must be taken into account. In this study, we derived a specific load profile from an energy turnaround scenario that supports the energy system. SOEC short-stacks were operated and we investigated the impact that the load profile has on electrical stack performance and stack degradation as well as the product gas composition by means of Fourier-transform infrared spectroscopy. The stacks could follow the grid-related requirement profiles of secondary control power and minute reserves very well with transition times of less than two minutes per 25% of relative power. Only short-term disturbances of the H 2 /CO ratio were observed during transitions due to the adjustment of feed gases. No elevated degradation effects resulting from flexible operation were apparent over 1300 h, although other causes of degradation were present.

Keywords: solid-oxide electrolysis; co-electrolysis; syngas production; renewable electricity; system integration; flexibility potential (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/14/3/544/pdf (application/pdf)
https://www.mdpi.com/1996-1073/14/3/544/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:14:y:2021:i:3:p:544-:d:484686

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().