Gast ::
| Hauptseite > Publikationsdatenbank > La2Ni1-xCoxO4þδ (x ¼ 0.0, 0.1 and 0.2) based efficient oxygen electrode materials for solid oxide electrolysis cells |
| Hauptseite > Publikationsdatenbank > La2Ni1-xCoxO4þδ (x ¼ 0.0, 0.1 and 0.2) based efficient oxygen electrode materials for solid oxide electrolysis cells |
| Journal Article | FZJ-2019-05169 |
; ; ; ;
2019
Elsevier
New York, NY [u.a.]
This record in other databases: 
Please use a persistent id in citations: http://hdl.handle.net/2128/23139 doi:10.1016/j.jpowsour.2019.227292
Abstract: The present study is focused on the development of alternative oxygen electrodes for Solid Oxide Electrolysis Cells (SOECs). Rare earth nickelates with general formula Ln2NiO4+δ (Ln = La, Pr or Nd) have shown good performance as oxygen electrodes with various electrolytes. Among them, La2NiO4+δ is most stable nickelate by itself however its electrochemical performance is lower compare to Pr2NiO4+δ. Therefore, to further enhance the physico-chemical properties, electrochemical performance of La2NiO4+δ as SOECs oxygen electrode, herein, we have performed the substitution of nickel with cobalt. Three compositions (x = 0.0, 0.1 and 0.2) were mainly considered and completely characterized using several techniques. The symmetrical as well as single cells were then prepared and electrochemically characterized using DC- and AC-techniques in the temperature range 700–900 °C. The electrode reaction mechanism was also investigated by recording the impedance spectra at different pO2. With cobalt substitution, an improvement in electrochemical performance as well lower degradation rate is observed during long term SOEC operation at −1 A⋅cm−2 current density at 800 °C with 50% H2 and 50% H2O feed gas mixture.
; 
; 
; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF >= 5 ; JCR ; NCBI Molecular Biology Database ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection
|
The record appears in these collections: |
PDF
PDF (PDFA)