Han, Feng and Lang, Michael and Szabo, Patric and Geipel, Christian and Walter, Christian and Costa, Rémi (2023) Performance and Degradation of Electrolyte Supported SOECs with Advanced GDC Thin-film Layers in Long-term Stack Test.
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Abstract
Electrolyte supported Solid Oxide Cells (ESCs) with advanced thin-film Gd-doped ceria layers deposited via EB-PVD method at 600 oC were assembled and electrochemically investigated in a so-called “rainbow” stack with 30 repeat units (RUs). At the initial stage of the SOEC operation, the stack reached a high performance with an electrical efficiency of 99.65 % at 75 % steam conversion and a total power input of 1.98 kW. A long-term stack test was performed in SOEC mode for over 5000 h and demonstrated a low voltage degradation of approx. +10.9 mV·kh–1 per RU (+0.9% kh-1). The RUs with EB-PVD GDC thin-films demonstrated similar initial performance and degradation rate to the state-of-the-art cells. In this paper, the investigation mainly focuses on the electrochemical characteristics of RUs containing the EB-PVD thin-film GDC layers.
Item URL in elib: | https://elib.dlr.de/195979/ | ||||||||||||||||||||||||||||
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Document Type: | Editorship of Proceedings | ||||||||||||||||||||||||||||
Title: | Performance and Degradation of Electrolyte Supported SOECs with Advanced GDC Thin-film Layers in Long-term Stack Test | ||||||||||||||||||||||||||||
Authors: |
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Date: | June 2023 | ||||||||||||||||||||||||||||
Refereed publication: | No | ||||||||||||||||||||||||||||
Open Access: | Yes | ||||||||||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||||||||||
In SCOPUS: | No | ||||||||||||||||||||||||||||
In ISI Web of Science: | No | ||||||||||||||||||||||||||||
Status: | Published | ||||||||||||||||||||||||||||
Keywords: | SOEC, stack, degradation, GDC, thin-film | ||||||||||||||||||||||||||||
HGF - Research field: | Energy | ||||||||||||||||||||||||||||
HGF - Program: | Materials and Technologies for the Energy Transition | ||||||||||||||||||||||||||||
HGF - Program Themes: | Electrochemical Energy Storage | ||||||||||||||||||||||||||||
DLR - Research area: | Energy | ||||||||||||||||||||||||||||
DLR - Program: | E SP - Energy Storage | ||||||||||||||||||||||||||||
DLR - Research theme (Project): | E - Electrochemical Storage | ||||||||||||||||||||||||||||
Location: | Stuttgart | ||||||||||||||||||||||||||||
Institutes and Institutions: | Institute of Engineering Thermodynamics > Electrochemical Energy Technology | ||||||||||||||||||||||||||||
Deposited By: | Han, Feng | ||||||||||||||||||||||||||||
Deposited On: | 14 Jul 2023 13:02 | ||||||||||||||||||||||||||||
Last Modified: | 24 Apr 2024 20:56 |
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