Electronic Activation At Oxide Hetero-structure At Elevated Temperatures – Source Of Markedly Accelerated Oxygen Reduction Kinetics
نویسندگان
چکیده
To understand ultra-fast oxygen reduction reaction kinetics near La0.8Sr0.2CoO3/(La0.5Sr0.5)2CoO4 (LSC113/214) interface, a combination of in-situ scanning tunneling spectroscopy and focused ion beam milling was used to study the local electronic structure near LSC113/214 interface at elevated temperature and in oxygen. The electronic activation of LSC214 by the coupling with LSC113, concurrent with the fast oxygen incorporation on LSC214, was identified to be a key reason. These results put forward the electronically coupled oxide structures as novel cathodes. We generalize and further test this idea on a La0.8Sr0.2CoO3/La2NiO4 system, which shows a similar electronic activation of La2NiO4 at elevated temperatures.
منابع مشابه
Electronic Activation of Cathode Superlattices at Elevated Temperatures – Source of Markedly Accelerated Oxygen Reduction Kinetics
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