TY - JOUR
T1 - Surface chemistry evolution in LnBaCo2O5 + δ double perovskites for oxygen electrodes
AU - Téllez, Helena
AU - Druce, John
AU - Ju, Young Wan
AU - Kilner, John
AU - Ishihara, Tatsumi
N1 - Funding Information:
The authors gratefully acknowledge the support of the International Institute for Carbon Neutral Energy Research (wpi-I 2 CNER), sponsored by the World Premier International Research Center Initiative (WPI), MEXT, Japan. Additionally, HT is funded by the JSPS Post-doctoral fellowship program and the Grant-in-Aid funding ( KAKENHI 25.03770 ). The authors also thank Mr. Matthew Sharp (Imperial College London) for providing the GBCO sample for the ageing study.
PY - 2014/12/3
Y1 - 2014/12/3
N2 - The electro-catalytically active surfaces of mixed ionic electronic conductors (MIECs) are critically important for the operation of electrochemical devices such as solid oxide electrolyser cells (SOECs) and fuel cells (SOFCs). However, the composition and morphology of surfaces of real samples are often poorly characterized, and thus our understanding of the influence of these factors on the surface exchange reactions is rudimentary. In this work, we apply low energy ion scattering (LEIS) spectrometry and atomic force microscopy (AFM) to investigate the evolution of the surface composition and morphology of two layered perovskite type materials, showing the dynamic nature of these surfaces even at room temperature.
AB - The electro-catalytically active surfaces of mixed ionic electronic conductors (MIECs) are critically important for the operation of electrochemical devices such as solid oxide electrolyser cells (SOECs) and fuel cells (SOFCs). However, the composition and morphology of surfaces of real samples are often poorly characterized, and thus our understanding of the influence of these factors on the surface exchange reactions is rudimentary. In this work, we apply low energy ion scattering (LEIS) spectrometry and atomic force microscopy (AFM) to investigate the evolution of the surface composition and morphology of two layered perovskite type materials, showing the dynamic nature of these surfaces even at room temperature.
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U2 - 10.1016/j.ijhydene.2014.06.102
DO - 10.1016/j.ijhydene.2014.06.102
M3 - Article
AN - SCOPUS:84913612697
VL - 39
SP - 20856
EP - 20863
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
SN - 0360-3199
IS - 35
ER -