Surface chemistry evolution in LnBaCo2O5 + δ double perovskites for oxygen electrodes

Helena Tellez Lozano, John William Richard Druce, Young Wan Ju, John Kilner, Tatsumi Ishihara

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)20856-20863
Number of pages8
JournalInternational Journal of Hydrogen Energy
Volume39
Issue number35
DOIs
Publication statusPublished - Dec 3 2014

Fingerprint

perovskites
Surface chemistry
chemistry
Electrodes
Oxygen
electrodes
oxygen
Surface structure
Perovskite
Spectrometry
Surface morphology
Fuel cells
ion scattering
Atomic force microscopy
fuel cells
Scattering
conductors
Oxides
atomic force microscopy
Ions

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Cite this

Surface chemistry evolution in LnBaCo2O5 + δ double perovskites for oxygen electrodes. / Tellez Lozano, Helena; Druce, John William Richard; Ju, Young Wan; Kilner, John; Ishihara, Tatsumi.

In: International Journal of Hydrogen Energy, Vol. 39, No. 35, 03.12.2014, p. 20856-20863.

Research output: Contribution to journalArticle

Tellez Lozano, Helena ; Druce, John William Richard ; Ju, Young Wan ; Kilner, John ; Ishihara, Tatsumi. / Surface chemistry evolution in LnBaCo2O5 + δ double perovskites for oxygen electrodes. In: International Journal of Hydrogen Energy. 2014 ; Vol. 39, No. 35. pp. 20856-20863.
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