Dynamic behavior of high-temperature CO2/H2O co-electrolysis coupled with real fluctuating renewable power

Sun, Yuting; Zheng, Wenjin; Ji, Shiyu; Sun, Anwei; Wei, Shizhao; Zheng, Nan; Han, Yu; Xiao, Gang; Ni, Meng; Xu, Haoran

doi:10.1016/j.seta.2022.102344

Cited by 3 publications

(2 citation statements)

References 25 publications

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“…In fact, the energy required for green hydrogen production using SOEC technology can be less than 4kWh/Nm 3 of H 2 , significantly lower than that of competing technologies (>5 kWh/Nm 3 for alkaline electrolysis and >6 kWh/Nm 3 for PEM) [33,61]. Of course, one has to account for the current challenges, which must be tackled, including powering SOECs with real fluctuating renewable energy sources [62]. Along with the overview and analysis of the SOEC technology, the present study points out some of the main industrial routes that could be easily adopted during the next few years to help decarbonise industry, with a special interest in the highly intensive energy industries.…”

Section: Discussionmentioning

confidence: 99%

Business Model Development for a High-Temperature (Co-)Electrolyser System

Riester

García

Alayo

et al. 2022

Fuels

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There are increasing international efforts to tackle climate change by reducing the emission of greenhouse gases. As such, the use of electrolytic hydrogen as an energy carrier in decentralised and centralised energy systems, and as a secondary energy carrier for a variety of applications, is projected to grow. Required green hydrogen can be obtained via water electrolysis using the surplus of renewable energy during low electricity demand periods. Electrolysis systems with alkaline and polymer electrolyte membrane (PEM) technology are commercially available in different performance classes. The less mature solid oxide electrolysis cell (SOEC) promises higher efficiencies, as well as co-electrolysis and reversibility functions. This work uses a bottom-up approach to develop a viable business model for a SOEC-based venture. The broader electrolysis market is analysed first, including conventional and emerging market segments. A further opportunity analysis ranks these segments in terms of business attractiveness. Subsequently, the current state and structure of the global electrolyser industry are reviewed, and a ten-year outlook is provided. Key industry players are identified and profiled, after which the major industry and competitor trends are summarised. Based on the outcomes of the previous assessments, a favourable business case is generated and used to develop the business model proposal. The main findings suggest that grid services are the most attractive business sector, followed by refineries and power-to-liquid processes. SOEC technology is particularly promising due to its co-electrolysis capabilities within the methanol production process. Consequently, an “engineering firm and operator” business model for a power-to-methanol plant is considered the most viable option.

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Section: Discussionmentioning

confidence: 99%

Business Model Development for a High-Temperature (Co-)Electrolyser System

Riester

García

Alayo

et al. 2022

Fuels

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show abstract

“…When stacks are applied for intermittent-power dynamic operations, fluctuations in the flow, temperature, and pressure fields are inevitable. Under these conditions, the stack degradation will accelerate. − Sun et al used a multiphysics field to develop an SOEC model and investigated the dynamic performance of photovoltaic power supplies during H 2 O/CO 2 coelectrolysis. The authors found that the temperature field substantially fluctuated and that a high CO 2 molar fraction helped suppress average temperature fluctuations.…”

Section: Stability: Bundled and Stacked Cellsmentioning

confidence: 99%

Syngas Production from CO₂ and H₂O via Solid-Oxide Electrolyzer Cells: Fundamentals, Materials, Degradation, Operating Conditions, and Applications

Hou,

Jiang,

Wei

et al. 2024

Chem. Rev.

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Highly efficient coelectrolysis of CO 2 /H 2 O into syngas (a mixture of CO/ H 2 ), and subsequent syngas conversion to fuels and value-added chemicals, is one of the most promising alternatives to reach the corner of zero carbon strategy and renewable electricity storage. This research reviews the current state-of-the-art advancements in the coelectrolysis of CO 2 /H 2 O in solid oxide electrolyzer cells (SOECs) to produce the important syngas intermediate. The overviews of the latest research on the operating principles and thermodynamic and kinetic models are included for both oxygen-ion-and proton-conducting SOECs. The advanced materials that have recently been developed for both types of SOECs are summarized. It later elucidates the necessity and possibility of regulating the syngas ratios (H 2 :CO) via changing the operating conditions, including temperature, inlet gas composition, flow rate, applied voltage or current, and pressure. In addition, the sustainability and widespread application of SOEC technology for the conversion of syngas is highlighted. Finally, the challenges and the future research directions in this field are addressed. This review will appeal to scientists working on renewable-energy-conversion technologies, CO 2 utilization, and SOEC applications. The implementation of the technologies introduced in this review offers solutions to climate change and renewable-power-storage problems.

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Hydrogen from solar? A rigorous analysis of solar energy integration concepts for a high temperature steam electrolysis plant

Immonen,

Powell

2023

Energy Conversion and Management

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Dynamic behavior of high-temperature CO2/H2O co-electrolysis coupled with real fluctuating renewable power

Cited by 3 publications

References 25 publications

Business Model Development for a High-Temperature (Co-)Electrolyser System

Business Model Development for a High-Temperature (Co-)Electrolyser System

Syngas Production from CO₂ and H₂O via Solid-Oxide Electrolyzer Cells: Fundamentals, Materials, Degradation, Operating Conditions, and Applications

Hydrogen from solar? A rigorous analysis of solar energy integration concepts for a high temperature steam electrolysis plant

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Dynamic behavior of high-temperature CO2/H2O co-electrolysis coupled with real fluctuating renewable power

Cited by 3 publications

References 25 publications

Business Model Development for a High-Temperature (Co-)Electrolyser System

Business Model Development for a High-Temperature (Co-)Electrolyser System

Syngas Production from CO2 and H2O via Solid-Oxide Electrolyzer Cells: Fundamentals, Materials, Degradation, Operating Conditions, and Applications

Hydrogen from solar? A rigorous analysis of solar energy integration concepts for a high temperature steam electrolysis plant

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Product

Resources

About

Syngas Production from CO₂ and H₂O via Solid-Oxide Electrolyzer Cells: Fundamentals, Materials, Degradation, Operating Conditions, and Applications