Investigation of off-design characteristics of solid oxide electrolyser (SOE) operating in endothermic conditions

Doping with copper is studied in a series of double perovskite-type GdBa0.5Sr0.5Co2-xCuxO5+δ, candidate oxygen electrode materials for reversible Solid Oxide Cells. Obtained by a sol-gel method, the material with x = 1.15, having the highest amount of the introduced Cu (lowest Co content) is selected, and systematically evaluated regarding physicochemical characteristics, as well as chemical stability with La0.8Sr0.2Ga0.8Mg0.2O3-δ and Ce0.9Gd0.1O2-δ solid electrolytes. Promising electrochemical performance is obtained if this compound is used to manufacture oxygen electrodes, with the recorded low polarization resistance of 0.144 Ω cm2 at 700 °C, and 0.020 Ω cm2 at 850 °C. Also, the anode-supported laboratory cell is found to deliver over 725 mW cm-2 power density at 850 °C, and shows good performance in the electrolyzer mode.

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“…For the full cell, anode-supported design was utilized. Details about construction of such cell can be found in (11,12). Ca.…”

Section: Methodsmentioning

confidence: 99%

Optimizing the Copper Content in GdBa_0.5Sr_0.5Co_2-XCu_xO_5+δ Double Perovskites as the High Performance Oxygen Electrodes for Reversible Solid Oxide Cells

Li¹,

Świerczek²,

Winiarz³

et al. 2023

ECS Trans.

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“…For the preliminary tests of LaNi0.5Cu0.5O3-δ as the air electrode for the fuel electrode supported cells with 8YSZ electrolyte half cells (5 cm x 5 cm) with the following configuration: Ni-8YSZ/8YSZ/CGO were used. The cells were prepared with standard procedures developed at the Institute of Power Engineering, which details can be found in (25,26). Air electrode paste based on the LaNi0.5Cu0.5O3-δ and terpineol with other additives (binder and plasticizer) was manually screen-printed on the half cells (air electrode area 16 cm 2 ), which were in the next step annealed at 800 °C for 2 hours in the air (sintering condition analogous to the presented in the ref.…”

Section: Methodsmentioning

confidence: 99%

Efficient and Economically Favorable Co-Free Air Electrodes for Solid Oxide Cells

et al. 2021

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In this work, the assessment of LaNi0.5Cu0.5O3-δ-based perovskite in terms of the availability of critical raw materials, sustainability, and economic aspect in relation to the Co-based oxides is presented. Chemical compatibility between LaNi0.5Cu0.5O3-δ, obtained by the sol-gel method, and commercial CGO powder is evaluated. Moreover, the electrochemical studies of fuel electrode-supported cells with LaNi0.5Cu0.5O3-δ material as the air electrodes are presented. The electrochemical measurements - current density-voltage curves, were measured at different conditions including temperature in the 700-800 °C range and variation of the composition of feeding gases.

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“…This is a complex cell component that must stop all the hydrogen or different gases. As a function of the cell design, it can work in different ways such as thermo-neutral, endothermic, and exothermic depending on the steam temperature and on the provided electricity [9]. Not all the provided electricity is employed for the steam electrolysis, in fact, due to important losses, a part of the provided energy is wasted under the formation of heat.…”

Section: Water Electrolysismentioning

confidence: 99%

Water Electrolysis for the Production of Hydrogen to Be Employed in the Ironmaking and Steelmaking Industry

Cavaliere

Perrone

Silvello

2021

Metals

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The way to decarbonization will be characterized by the huge production of hydrogen through sustainable routes. Thus, the basic production way is water electrolysis sustained by renewable energy sources allowing for obtaining “green hydrogen”. The present paper reviews the main available technologies for the water electrolysis finalized to the hydrogen production. We describe the fundamental of water electrolysis and the problems related to purification and/or desalinization of water before electrolysis. As a matter of fact, we describe the energy efficiency issues with particular attention to the potential application in the steel industry. The fundamental aspects related to the choice of high-temperature or low-temperature technologies are analyzed.

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Investigation of off-design characteristics of solid oxide electrolyser (SOE) operating in endothermic conditions

Cited by 25 publications

References 41 publications

Optimizing the Copper Content in GdBa_0.5Sr_0.5Co_2-XCu_xO_5+δ Double Perovskites as the High Performance Oxygen Electrodes for Reversible Solid Oxide Cells

Optimizing the Copper Content in GdBa_0.5Sr_0.5Co_2-XCu_xO_5+δ Double Perovskites as the High Performance Oxygen Electrodes for Reversible Solid Oxide Cells

Efficient and Economically Favorable Co-Free Air Electrodes for Solid Oxide Cells

Water Electrolysis for the Production of Hydrogen to Be Employed in the Ironmaking and Steelmaking Industry

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Investigation of off-design characteristics of solid oxide electrolyser (SOE) operating in endothermic conditions

Cited by 25 publications

References 41 publications

Optimizing the Copper Content in GdBa0.5Sr0.5Co2-XCuxO5+δ Double Perovskites as the High Performance Oxygen Electrodes for Reversible Solid Oxide Cells

Optimizing the Copper Content in GdBa0.5Sr0.5Co2-XCuxO5+δ Double Perovskites as the High Performance Oxygen Electrodes for Reversible Solid Oxide Cells

Efficient and Economically Favorable Co-Free Air Electrodes for Solid Oxide Cells

Water Electrolysis for the Production of Hydrogen to Be Employed in the Ironmaking and Steelmaking Industry

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Product

Resources

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Optimizing the Copper Content in GdBa_0.5Sr_0.5Co_2-XCu_xO_5+δ Double Perovskites as the High Performance Oxygen Electrodes for Reversible Solid Oxide Cells

Optimizing the Copper Content in GdBa_0.5Sr_0.5Co_2-XCu_xO_5+δ Double Perovskites as the High Performance Oxygen Electrodes for Reversible Solid Oxide Cells