Effect of Water Adsorption on Conductivity in Epitaxial Sm0.1Ce0.9O2 -δ Thin Film for Micro Solid Oxide Fuel Cells Applications | Zendy

Nan Yang | Zendy; Evgheni Strelcov | Zendy; Alex Belianinov | Zendy; A. Tebano | Zendy; V. Foglietti | Zendy; Christoph Schlueter | Zendy; TienLin Lee | Zendy; Stephen Jesse | Zendy; Sergei V. Kalinin | Zendy; G. Balestrino | Zendy; C. Aruta | Zendy

Open Access

Effect of Water Adsorption on Conductivity in Epitaxial Sm_0.1Ce_0.9O₂ _-δ Thin Film for Micro Solid Oxide Fuel Cells Applications

Author(s) -

Nan Yang,

Evgheni Strelcov,

Alex Belianinov,

A. Tebano,

V. Foglietti,

Christoph Schlueter,

TienLin Lee,

Stephen Jesse,

Sergei V. Kalinin,

G. Balestrino,

C. Aruta

Publication year - 2015

Publication title -

ecs transactions

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.235

H-Index - 52

eISSN - 1938-6737

pISSN - 1938-5862

DOI - 10.1149/06916.0039ecst

Subject(s) - conductivity , adsorption , analytical chemistry (journal) , valence (chemistry) , materials science , electrical resistivity and conductivity , relative humidity , thin film , oxide , chemistry , nanotechnology , thermodynamics , metallurgy , physics , chromatography , engineering , organic chemistry , electrical engineering

Water adsorption, splitting, and proton liberation were investigated on Sm 0.1 Ce 0.9 O 2-δ thin films by scanning probe microscopy. An irreversible volume expansion was observed by applying a positive bias with increased temperature. The volume expansion is also linearly dependent on the relative humidity. A reversible water adsorption process and its effect on the conductivity were also investigated by electrochemical strain microscopy and first order reversal curve under a number of experiment conditions. The presence of a Ce 3+ along with OH groups, detected by hard x-ray photoemission spectroscopy established a clear correlation between the water incorporation and the valence state of Ce.

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