High-Temperature Electrochemical Energy Conversion and Storage

Shi, Yixiang; Cai, Ningsheng; Zhao, Xiaoqun; Zhang, Jiujun

doi:10.1201/b22506

Cited by 5 publications

(8 citation statements)

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“…Analogously, PCECs utilize H + as the conducted ion in electrolyte materials (with identical HER and OER expressions to those shown in eqs 4 and 5 30 ), while the obviously higher operating temperature in the range of 550−700 °C results in considerably different cell structures and material selections. In general, the preheating of steam before it is delivered to an oxygen electrode (anode) is indispensible, and the adopted electrolyte materials mainly comprise ceramics, whereas cermet materials incorporating metals are utilized as electrocatalysts for remarkable catalytic activity.…”

Section: Role Of Temperature In Electrolysis Cellsmentioning

confidence: 99%

Water Electrolysis toward Elevated Temperature: Advances, Challenges and Frontiers

Zhang

Liu

et al. 2023

Chem. Rev.

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Since severe global warming and related climate issues have been caused by the extensive utilization of fossil fuels, the vigorous development of renewable resources is needed, and transformation into stable chemical energy is required to overcome the detriment of their fluctuations as energy sources. As an environmentally friendly and efficient energy carrier, hydrogen can be employed in various industries and produced directly by renewable energy (called green hydrogen). Nevertheless, large-scale green hydrogen production by water electrolysis is prohibited by its uncompetitive cost caused by a high specific energy demand and electricity expenses, which can be overcome by enhancing the corresponding thermodynamics and kinetics at elevated working temperatures. In the present review, the effects of temperature variation are primarily introduced from the perspective of electrolysis cells. Following an increasing order of working temperature, multidimensional evaluations considering materials and structures, performance, degradation mechanisms and mitigation strategies as well as electrolysis in stacks and systems are presented based on elevated temperature alkaline electrolysis cells and polymer electrolyte membrane electrolysis cells (ET-AECs and ET-PEMECs), elevated temperature ionic conductors (ET-ICs), protonic ceramic electrolysis cells (PCECs) and solid oxide electrolysis cells (SOECs).

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Section: Role Of Temperature In Electrolysis Cellsmentioning

confidence: 99%

Water Electrolysis toward Elevated Temperature: Advances, Challenges and Frontiers

Zhang

Liu

et al. 2023

Chem. Rev.

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“…A few parameters are retrieved from the experimental activity to adapt the system model described in Section 3. Namely, they are: On the other hand, the experimental activity being carried out on a single cell test apparatus, the authors preferred to consider literature data regarding the roundtrip efficiency of the rSOC stack (0.6 according to [37]).…”

Section: From the Experimental Characterization To The Model Parametrizationmentioning

confidence: 99%

How to Power the Energy–Water Nexus: Coupling Desalination and Hydrogen Energy Storage in Mini-Grids with Reversible Solid Oxide Cells

et al. 2020

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Sustainable Development Goals establish the main challenges humankind is called to tackle to assure equal comfort of living worldwide. Among these, the access to affordable renewable energy and clean water are overriding, especially in the context of developing economies. Reversible Solid Oxide Cells (rSOC) are a pivotal technology for their sector-coupling potential. This paper aims at studying the implementation of such a technology in new concept PV-hybrid energy storage mini-grids with close access to seawater. In such assets, rSOCs have a double useful effect: charge/discharge of the bulk energy storage combined with seawater desalination. Based on the outcomes of an experimental proof-of-concept on a single cell operated with salty water, the operation of the novel mini-grid is simulated throughout a solar year. Simulation results identify the fittest mini-grid configuration in order to achieve energy and environmental optimization, hence scoring a renewable penetration of more than 95%, marginal CO2 emissions (13 g/kWh), and almost complete coverage of load demand. Sector-coupling co-production rate (desalinated water versus electricity issued from the rSOC) is 0.29 L/kWh.

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“…To connect such cells in series and form a stack, bipolar plates known as interconnects are applied. Their purpose is to provide structural support in the cell, as well as a gas-tight separation between the cathode and anode spaces, and to ensure that the current flow through adjacent cells and can thus be supplied to receivers [ 1 , 2 ].…”

Section: Introductionmentioning

confidence: 99%

Plasmochemical Modification of Crofer 22APU for Intermediate-Temperature Solid Oxide Fuel Cell Interconnects Using RF PA CVD Method

et al. 2022

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The results of plasmochemical modification on Crofer 22APU ferritic stainless steel with a SiCxNy:H layer, as well as the impact of these processes on the increase in usability of the steel as intermediate-temperature solid oxide fuel cell (IT-SOFC), interconnects, are presented in this work. The layer was obtained using Radio-Frequency Plasma-Activated Chemical Vapor Deposition (RF PA CVD, 13.56 MHz) with or without the N+ ion modification process of the steel surface. To determine the impact of the surface modification on the steel’s resistance to high-temperature corrosion and on its mechanical properties, the chemical composition, atomic structure, and microstructure were investigated by means of IR spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). Microhardness, Young’s modulus, wear rate, as well as electrical resistance, were also determined. Micromechanical experiments showed that the plasmochemical modification has a positive influence on the surface hardness and Young’s modulus of the investigated samples. High-temperature oxidation studies performed for the samples indicate that N+ ion modification prior to the deposition of the SiCxNy:H layer improves the corrosion resistance of Crofer 22APU steel modified via CVD. The area-specific resistance of the studied samples was 0.01 Ω·cm2, which is lower than that of bare steel after 500 h of oxidation at 1073 K. It was demonstrated that the deposition of the SiCxNy:H layer preceded by N+ ion modification yields the best properties.

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High-Temperature Electrochemical Energy Conversion and Storage

Cited by 5 publications

References 0 publications

Water Electrolysis toward Elevated Temperature: Advances, Challenges and Frontiers

Water Electrolysis toward Elevated Temperature: Advances, Challenges and Frontiers

How to Power the Energy–Water Nexus: Coupling Desalination and Hydrogen Energy Storage in Mini-Grids with Reversible Solid Oxide Cells

Plasmochemical Modification of Crofer 22APU for Intermediate-Temperature Solid Oxide Fuel Cell Interconnects Using RF PA CVD Method

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