Analysis of pressurized operation of 10 layer solid oxide electrolysis stacks

Riedel, Marc; Heddrich, Marc P.; Friedrich, K. Andreas

doi:10.1016/j.ijhydene.2018.12.168

Cited by 51 publications

(68 citation statements)

References 28 publications

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“…The readers are referred to Santhanam et al . and Riedel et al . for extended analysis of the results of SOFC and SOEC experiments, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…The experimental study was performed in both fuel cell and electrolysis operation. A detailed description of the experimental setup and methods provided in the literature by Riedel et al . A detailed description of the theoretical model of the rSOC reactor and its validation is provided by the author in the literature …”

Section: Theoretical and Experimental Analysismentioning

confidence: 99%

“…The 1‐D rSOC reactor models the global electrochemical reaction using the Butler–Volmer kinetic models. The electrochemical parameters required for the model were obtained from experimental results presented in detail by Riedel et al . The mass transport between within the porous electrodes were modeled using multi‐component dusty gas model (DGM).…”

Section: Process System Analysismentioning

confidence: 99%

“…The air electrode is composed of LSCF with a thickness of 30 μ. A detailed description of the stack is provided by Riedel et al . The validated model is flexible and can be used to simulate reactors with any number of cells or reactor modules with many reactors each containing more 60…120 cells.…”

Section: Process System Analysismentioning

confidence: 99%

See 3 more Smart Citations

Electricity Arbitration and Sector Coupling with an Experimentally Validated Reversible Solid Oxide Cell Reactor System Connected to the Natural Gas Grid

2020

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Chemical energy storage offers an attractive solution for the arbitration of intermittent renewable electricity due to its higher energy storage capacity and storage duration. Reversible solid oxide cell (rSOC) reactor systems can efficiently operate in electrolysis operation to convert electrical energy to chemical energy or in fuel cell mode to convert chemical energy back to electrical energy. Natural gas is widely used in the chemical industry as a source of energy and hydrogen. Hence, storing electrical energy in the form of synthetic natural gas can couple electricity arbitration with chemical process industries. A methane‐based rSOC system concept for the purpose of energy storage and sector coupling is investigated. A process system analysis is performed based on an experimental study of a commercially available rSOC reactor. A validated rSOC reactor model is used to identify optimal system operating conditions. The proposed system concept achieves a chemical to electrical energy conversion efficiency of 57% and electrical to chemical energy conversion efficiency of 93% based on first law and lower heating value. A net electrical storage efficiency of 53% can be achieved.

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“…The readers are referred to Santhanam et al . and Riedel et al . for extended analysis of the results of SOFC and SOEC experiments, respectively.…”

Section: Resultsmentioning

confidence: 99%

Section: Theoretical and Experimental Analysismentioning

confidence: 99%

Section: Process System Analysismentioning

confidence: 99%

Section: Process System Analysismentioning

confidence: 99%

See 2 more Smart Citations

Electricity Arbitration and Sector Coupling with an Experimentally Validated Reversible Solid Oxide Cell Reactor System Connected to the Natural Gas Grid

2020

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“…Since larger pressure differences likely damage the whole stack, all pressures were controlled by a sensitive pressure control unit of the test bench. A detailed description of the design and the capabilities of the test setup are published elsewhere .…”

Section: Operational Aspectsmentioning

confidence: 99%

High Temperature Co‐electrolysis for Power‐to‐X

Dueñas

Riedel

Riegraf

et al. 2019

Chemie Ingenieur Technik

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This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.High temperature solid oxide cells are attractive electrochemical reactors to perform simultaneous reduction of steam and CO 2 into syngas with the possibility of delivering a tailored composition to downstream processes. The main thermodynamic considerations, performance and impedance curves of electrolyte supported cells in co-electrolysis are shown as a function of temperature and pressure. In dynamic operation, the thermal changes that the reactor undergoes appear stronger in co-electrolysis mode than in steam electrolysis and should be considered in the development of operating strategies.

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Performance and Limitations of Nickel‐Doped Chromite Anodes in Electrolyte‐Supported Solid Oxide Fuel Cells

et al. 2021

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Ni-doped chromite anodes were integrated into electrolytesupported cells (ESC) with 5 × 5 cm 2 size and investigated in fuel cell mode with H 2 /H 2 O fuel gas. Both a stoichiometric and a nominally A-site deficient chromite anode material showed promising performance at 860°C approaching the ones of state-of-the-art Ni/Gd-doped ceria (CGO) anodes. While the difference in polarization resistance was small, an increased ohmic resistance of the perovskite anodes was observed, which is related to their limited electronic conductivity. Increasing the chromite electrode thickness was shown to enhance perform-ance and stability considerably. Degradation increased with current density, suggesting its dependency on the electrode potential, and could be reversed by redox cycling. Sulfur poisoning with 20 ppm hydrogen sulfide led to rapid voltage drops for the chromite anodes. It is discussed that Ni nanoparticle exsolution facilitates hydrogen dissociation to the extent that it is not rate-limiting at the investigated temperature unless an insufficiently thick electrode thickness is employed or sulfur impurities are present in the feed gas.

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Analysis of pressurized operation of 10 layer solid oxide electrolysis stacks

Cited by 51 publications

References 28 publications

Electricity Arbitration and Sector Coupling with an Experimentally Validated Reversible Solid Oxide Cell Reactor System Connected to the Natural Gas Grid

Electricity Arbitration and Sector Coupling with an Experimentally Validated Reversible Solid Oxide Cell Reactor System Connected to the Natural Gas Grid

High Temperature Co‐electrolysis for Power‐to‐X

Performance and Limitations of Nickel‐Doped Chromite Anodes in Electrolyte‐Supported Solid Oxide Fuel Cells

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