TY - JOUR
T1 - Surface composition of perovskite-type materials studied by Low Energy Ion Scattering (LEIS)
AU - Druce, John
AU - Ishihara, Tatsumi
AU - Kilner, John
N1 - Funding Information:
The authors gratefully acknowledge the support of the International Institute for Carbon Neutral Energy Research (wpi-I2CNER) , sponsored by the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of the Japanese government.
PY - 2014/9/1
Y1 - 2014/9/1
N2 - The analysis of the surface chemistry of electrode materials for solid oxide electrochemical conversion devices is of great importance to understand the fundamental mechanism of the oxygen exchange reaction, and the influence of changes in surface chemistry on device degradation. Low Energy Ion Scattering (LEIS) is an extremely surface sensitive analysis technique, capable of probing this chemistry in the very outer atomic layer of a material under conditions relevant to its operational state. In this contribution, we use LEIS to study the Sr segregation process in the perovskite La0.6Sr 0.4Co0.2Fe0.8O3 - δ (LSCF), and show that, conversely, there is no segregation of either lanthanide cation in Ruddlesden-Popper structured Pr1La1NiO 4 + δ (PLNO).
AB - The analysis of the surface chemistry of electrode materials for solid oxide electrochemical conversion devices is of great importance to understand the fundamental mechanism of the oxygen exchange reaction, and the influence of changes in surface chemistry on device degradation. Low Energy Ion Scattering (LEIS) is an extremely surface sensitive analysis technique, capable of probing this chemistry in the very outer atomic layer of a material under conditions relevant to its operational state. In this contribution, we use LEIS to study the Sr segregation process in the perovskite La0.6Sr 0.4Co0.2Fe0.8O3 - δ (LSCF), and show that, conversely, there is no segregation of either lanthanide cation in Ruddlesden-Popper structured Pr1La1NiO 4 + δ (PLNO).
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U2 - 10.1016/j.ssi.2013.09.010
DO - 10.1016/j.ssi.2013.09.010
M3 - Article
AN - SCOPUS:84903274269
SN - 0167-2738
VL - 262
SP - 893
EP - 896
JO - Solid State Ionics
JF - Solid State Ionics
ER -