High-performance oxygen electrode Ce0.9Co0.1O2-δ-LSM-YSZ for hydrogen production by solid oxide electrolysis cells

2021 ◽  
Author(s):  
Zhe Zhao ◽  
Xiuling Wang ◽  
Shuai Tang ◽  
Mojie Cheng ◽  
Zhigang Shao
Keyword(s):  
Hydrogen Production ◽  
High Performance ◽  
Oxygen Electrode ◽  
Solid Oxide ◽  
Electrolysis Cells ◽  
Solid Oxide Electrolysis ◽  
Solid Oxide Electrolysis Cells

La0.8Sr0.2Co0.8Ni0.2O3-δ impregnated oxygen electrode for H2O/CO2 co-electrolysis in solid oxide electrolysis cells

2018 ◽  
Vol 383 ◽  
pp. 93-101 ◽  
Author(s):  
Haoyu Zheng ◽  
Yunfeng Tian ◽  
Lingling Zhang ◽  
Bo Chi ◽  
Jian Pu ◽  
...  
Keyword(s):  
Oxygen Electrode ◽  
Solid Oxide ◽  
Electrolysis Cells ◽  
Solid Oxide Electrolysis ◽  
Solid Oxide Electrolysis Cells

(Invited) High Performance La0.3Ca0.7Fe0.7Cr0.3O3-Δ-Based Cathodes for the Conversion of CO2 to CO in Solid Oxide Electrolysis Cells

2020 ◽  
Vol MA2020-01 (36) ◽  
pp. 1461-1461
Author(s):  
Haris Masood Ansari ◽  
Adam Stuart Bass ◽  
Oliver Calderon ◽  
Simon Trudel ◽  
Viola Ingrid Birss
Keyword(s):  
High Performance ◽  
Solid Oxide ◽  
Electrolysis Cells ◽  
Solid Oxide Electrolysis ◽  
Solid Oxide Electrolysis Cells

Controllable CO2conversion in high performance proton conducting solid oxide electrolysis cells and the possible mechanisms

2019 ◽  
Vol 7 (9) ◽  
pp. 4855-4864 ◽  
Author(s):  
Nai Shi ◽  
Yun Xie ◽  
Daoming Huan ◽  
Yi Yang ◽  
Shuangshuang Xue ◽  
...  
Keyword(s):  
Reaction Mechanisms ◽  
High Performance ◽  
Solid Oxide ◽  
Proton Conducting ◽  
Electrolysis Cells ◽  
Solid Oxide Electrolysis ◽  
Solid Oxide Electrolysis Cells

CO2 was successfully converted to valuable products using P-SOECs, and the reaction mechanisms were discussed.

Performance and Stability of High Temperature Solid Oxide Electrolysis Cells (SOECs) for Hydrogen Production

2013 ◽  
Vol 57 (1) ◽  
pp. 3099-3104 ◽  
Author(s):  
K. J. Yoon ◽  
J.-W. Son ◽  
J.-H. Lee ◽  
B.-K. Kim ◽  
H.-J. Je ◽  
...  
Keyword(s):  
High Temperature ◽  
Hydrogen Production ◽  
Solid Oxide ◽  
Electrolysis Cells ◽  
Solid Oxide Electrolysis ◽  
Solid Oxide Electrolysis Cells

Co-electrolysis of steam and CO2 in full-ceramic symmetrical SOECs: a strategy for avoiding the use of hydrogen as a safe gas

2015 ◽  
Vol 182 ◽  
pp. 241-255 ◽  
Author(s):  
M. Torrell ◽  
S. García-Rodríguez ◽  
A. Morata ◽  
G. Penelas ◽  
A. Tarancón
Keyword(s):  
Electrochemical Impedance ◽  
Oxygen Electrode ◽  
Metallic Phase ◽  
Solid Oxide ◽  
Density Currents ◽  
Ceramic Oxides ◽  
Electrolysis Cells ◽  
Solid Oxide Electrolysis ◽  
Shift Reaction ◽  
Solid Oxide Electrolysis Cells

The use of cermets as fuel electrodes for solid oxide electrolysis cells requires permanent circulation of reducing gas, e.g. H2 or CO, so called safe gas, in order to avoid oxidation of the metallic phase. Replacing metallic based electrodes by pure oxides is therefore proposed as an advantage for the industrial application of solid oxide electrolyzers. In this work, full-ceramic symmetrical solid oxide electrolysis cells have been investigated for steam/CO2 co-electrolysis. Electrolyte supported cells with La0.75Sr0.25Cr0.5Mn0.5O3−δ reversible electrodes have been fabricated and tested in co-electrolysis mode using different fuel compositions, from pure H2O to pure CO2, at temperatures between 850–900 °C. Electrochemical impedance spectroscopy and galvanostatic measurements have been carried out for the mechanistic understanding of the symmetrical cell performance. The content of H2 and CO in the product gas has been measured by in-line gas micro-chromatography. The effect of employing H2 as a safe gas has also been investigated. Maximum density currents of 750 mA cm−2 and 620 mA cm−2 have been applied at 1.7 V for pure H2O and for H2O : CO2 ratios of 1 : 1, respectively. Remarkable results were obtained for hydrogen-free fuel compositions, which confirmed the interest of using ceramic oxides as a fuel electrode candidate to reduce or completely avoid the use of safe gas in operation minimizing the contribution of the reverse water shift reaction (RWSR) in the process. H2 : CO ratios close to two were obtained for hydrogen-free tests fulfilling the basic requirements for synthetic fuel production. An important increase in the operation voltage was detected under continuous operation leading to a dramatic failure by delaminating of the oxygen electrode.

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