scholarly journals Effect of CuO as Sintering Additive in Scandium Cerium and Gadolinium-Doped Zirconia-Based Solid Oxide Electrolysis Cell for Steam Electrolysis

Processes ◽  
2019 ◽  
Vol 7 (12) ◽  
pp. 868 ◽  
Author(s):  
Visvanichkul ◽  
Peng-Ont ◽  
Ngampuengpis ◽  
Sirimungkalakul ◽  
Puengjinda ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Relative Density ◽  
Cell Activation ◽  
Solid Oxide ◽  
Electrolysis Cell ◽  
Sintering Additive ◽  
Solid Oxide Electrolysis ◽  
Solid Oxide Electrolysis Cell ◽  
Xrd Patterns ◽  
Solid Oxide Electrolysis Cells

The effect of CuO as a sintering additive on the electrolyte of solid oxide electrolysis cells (SOECs) was investigated. 0.5 wt% CuO was added into Sc0.1Ce0.05Gd0.05Zr0.89O2 (SCGZ) electrolyte as a sintering additive. An electrolyte-supported cell (Pt/SCGZ/Pt) was fabricated. Phase formation, relative density, and electrical conductivity were investigated. The cells were sintered at 1373 K to 1673 K for 4 h. The CuO significantly affected the sinterability of SCGZ. The SCGZ with 0.5 wt% CuO achieved 95% relative density at 1573 K while the SCGZ without CuO could not be densified even at 1673 K. Phase transformation and impurity after CuO addition were not detected from XRD patterns. Electrochemical performance was evaluated at the operating temperature from 873 K to 1173 K under steam to hydrogen ratio at 70:30. Adding 0.5 wt% CuO insignificantly affected the electrochemical performance of the cell. Activation energy of conduction (Ea) was 72.34 kJ mol−1 and 74.93 kJ mol−1 for SCGZ and SCGZ with CuO, respectively.

Intermediate-temperature solid oxide electrolysis cells with thin proton-conducting electrolyte and a robust air electrode

2017 ◽  
Vol 5 (44) ◽  
pp. 22945-22951 ◽  
Author(s):  
Libin Lei ◽  
Zetian Tao ◽  
Xiaoming Wang ◽  
John P. Lemmon ◽  
Fanglin Chen
Keyword(s):  
Electrical Energy ◽  
Solid Oxide ◽  
Intermediate Temperature ◽  
Chemical Energy ◽  
Electrolysis Cell ◽  
Proton Conducting ◽  
Electrolysis Cells ◽  
Solid Oxide Electrolysis ◽  
Solid Oxide Electrolysis Cell ◽  
Solid Oxide Electrolysis Cells

A proton-conducting solid oxide electrolysis cell (H-SOEC) is a promising device that efficiently converts electrical energy to chemical energy.

Power-to-gas systems utilizing methanation reaction in solid oxide electrolysis cell cathodes: a model-based study

2020 ◽  
Vol 4 (6) ◽  
pp. 2691-2706
Author(s):  
Naoya Fujiwara ◽  
Shohei Tada ◽  
Ryuji Kikuchi
Keyword(s):  
Solid Oxide ◽  
Electrolysis Cell ◽  
Direct Power ◽  
Electrolysis Cells ◽  
Gas System ◽  
Solid Oxide Electrolysis ◽  
Solid Oxide Electrolysis Cell ◽  
Power To Gas ◽  
Solid Oxide Electrolysis Cells ◽  
Cell Cathodes

A novel direct power-to-gas system utilizing solid oxide electrolysis cells was modelled and evaluated to clarify its potential advantages.

Preparation and Electrochemical Performance of Hydrogen Electrode and Electrolyte for SOEC by Tape Casting and Lamination

2010 ◽  
Vol 434-435 ◽  
pp. 727-730
Author(s):  
Jing Tao Ma ◽  
Ben Ge ◽  
Xu Ping Lin ◽  
Chang Sheng Deng
Keyword(s):  
Electrochemical Performance ◽  
Tape Casting ◽  
Solid Oxide ◽  
Electrolysis Cell ◽  
Scale Production ◽  
Hydrogen Electrode ◽  
Green Tape ◽  
Production Of Hydrogen ◽  
Solid Oxide Electrolysis ◽  
Solid Oxide Electrolysis Cell

The solid oxide electrolysis cell (SOEC) has been receiving increasing research and attention worldwide due to its potential usage for large-scale production of hydrogen. Tape casting and lamination technique were successfully used to fabricate the NiO-YSZ hydrogen electrode substrate cermets of planar solid oxide electrolysis cell. In this paper the green tape with thickness of 350μm was prepared by tape casting and then the lamination was used to obtain the required thickness for the NiO-YSZ hydrogen electrode-supported electrolyte cermets. The rheological properties of the suspensions with NiO-YSZ and YSZ were studied, respectively. The optimal temperature and pressure of the lamination were determined, and four direction of lamination mode was used according to tape casting direction to obtain symmetrical and even hydrogen electrode-supported electrolyte after co-sintering. Pore-formers were used to increase the porosity of the hydrogen electrode. The green tape was analyzed by TG-DSC analysis, the microstructure was observed by scanning electron microscope. The electrochemical performance of unit cell was measured at 850°C.

Hierarchically ordered porous Ni-based cathode-supported solid oxide electrolysis cells for stable CO2 electrolysis without safe gas

2017 ◽  
Vol 5 (46) ◽  
pp. 24098-24102 ◽  
Author(s):  
Dehua Dong ◽  
Shanshan Xu ◽  
Xin Shao ◽  
Leigh Hucker ◽  
Justin Marin ◽  
...  
Keyword(s):  
Solid Oxide ◽  
Electrolysis Cell ◽  
Electrolysis Cells ◽  
Solid Oxide Electrolysis ◽  
Solid Oxide Electrolysis Cell ◽  
Solid Oxide Electrolysis Cells ◽  
Co2 Electrolysis ◽  
Ordered Porous

This study reported a hierarchically ordered porous Ni-based cathode of a solid oxide electrolysis cell to realise stable CO2 electrolysis without the need for safe gas.

scholarly journals Infiltrated Ba0.5Sr0.5Co0.8Fe0.2O3-δ-Based Electrodes as Anodes in Solid Oxide Electrolysis Cells

Energies ◽  
2020 ◽  
Vol 13 (14) ◽  
pp. 3659 ◽  
Author(s):  
Xavier Majnoni d’Intignano ◽  
Davide Cademartori ◽  
Davide Clematis ◽  
Sabrina Presto ◽  
Massimo Viviani ◽  
...  
Keyword(s):  
Oxygen Electrode ◽  
Reduction Reaction ◽  
Solid Oxide ◽  
Electrolysis Cell ◽  
High Catalytic Activity ◽  
Energy Scenario ◽  
Solid Oxide Electrolysis ◽  
Solid Oxide Electrolysis Cell ◽  
Electrochemical Storage ◽  
Solid Oxide Electrolysis Cells

In the last decades, several works have been carried out on solid oxide fuel cell (SOFC) and solid oxide electrolysis cell (SOEC) technologies, as they are powerful and efficient devices for energy conversion and electrochemical storage. By increasing use of renewable sources, a discontinuous amount of electricity is indeed released, and reliable storage systems represent the key feature in such a future energy scenario. In this context, systems based on reversible solid oxide cells (rSOCs) are gaining increasing attention. An rSOC is an electrochemical device that can operate sequentially between discharging (SOFC mode) and charging (SOEC mode); then, it is essential the electrodes are able to guarantee high catalytic activity, both in oxidation and reduction conditions. Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF) has been widely recognized as one of the most promising electrode catalysts for the oxygen reduction reaction (ORR) in SOFC technology because of its astonishing content of oxygen vacancies, even at room temperature. The purpose of this study is the development of BSCF to be used as anode material in electrolysis mode, maintaining enhanced energy and power density. Impregnation with a La0.8Sr0.2MnO3 (LSM) discrete nanolayer is applied to pursue structural stability, resulting in a long lifetime reliability. Impedance spectroscopy measurements under anodic overpotential conditions are run to test BSCF and LSM-BSCF activity as the electrode in oxidation mode. The observed results suggest that BSCF is a very promising candidate as an oxygen electrode in rSOC systems.

Synthesis of Sr2Fe1-xMnxNbO6-δ Powders and their Stability as Electrode of Solid Oxide Electrolysis Cell

2012 ◽  
Vol 512-515 ◽  
pp. 1584-1587
Author(s):  
Ben Ge ◽  
De Sheng Ai ◽  
Chang Sheng Deng ◽  
Jing Tao Ma ◽  
Xu Ping Lin
Keyword(s):  
Perovskite Structure ◽  
Double Perovskite ◽  
Solid State Reaction Method ◽  
Solid Oxide ◽  
Electrolysis Cell ◽  
Oxide Powders ◽  
Solid Oxide Electrolysis ◽  
Different Temperatures ◽  
Solid Oxide Electrolysis Cell ◽  
Solid Oxide Electrolysis Cells

Double-perovskite Sr2Fe1-xMnxNbO6-δ (x = 0, 0.1, 0.2, 0.3, 0.5, 0.8) (SFMN) powders which will be applied to the electrode of solid oxide electrolysis cells (SOEC) were synthesized by Solid State Reaction Method. The mixed oxide powders SrCO3, Fe2O3, MnO2 and Nb2O5, were homogeneously calcined at different temperatures and in different atmospheres. The influence of the preparation process on the structure and the morphology of the powder were investigated by X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). It is found that the formation of perovskite structure is directly related to the content of Mn and calcining temperature. Controllable synthesis of pure phase of double perovskite powders was realized after calcining for12h at 1150 °C in air. Moreover, the experimental results show that the perovskite structure of SFMN is stable in whether oxidizing or reducing atmosphere, which indicates that this material has a potential to be used as electrode of solid oxide electrolysis cell.

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