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Thin Films: Engineering Mixed Ionic Electronic Conduction in La 0.8 Sr 0.2 MnO 3+ δ Nanostructures through Fast Grain Boundary Oxygen Diffusivity (Adv. Energy Mater. 11/2015)
Author(s) -
Saranya Aruppukottai M.,
Pla Dolors,
Morata Alex,
Cavallaro Andrea,
CanalesVázquez Jesús,
Kilner John A.,
Burriel Mónica,
Tarancón Albert
Publication year - 2015
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201570064
Subject(s) - materials science , ionic bonding , grain boundary , nanostructure , thermal diffusivity , ionic conductivity , conductor , thermal conduction , diffusion , grain boundary diffusion coefficient , oxygen , electrical conductor , electronic structure , nanotechnology , condensed matter physics , chemical physics , chemistry , ion , thermodynamics , electrode , composite material , microstructure , electrolyte , organic chemistry , physics , quantum mechanics
As reported by Mónica Burriel, Albert Tarancón, and co‐workers in article number 1500377, an electrical conductor such as La 0.8 Sr 0.2 MnO 3+δ (LSM) can be converted into a good mixed ionic electronic conductor by synthesizing a nanostructure with excellent electronic and oxygen mass transport properties. Oxygen diffusion highways are created by promoting a high concentration of strain‐induced defects in the grain boundary region, thus changing the conduction nature of the LSM material. This strategy provides a new method by which to synthesize artificial mixed ionic‐electronic conductors.
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