Valence band structure and oxygen reduction reaction of Cu doped PrBaCo2O5+δ

Kanghee Jo,Taewoo Kim,Jiseung Ryu, Taemin Noh,Heesoo Lee

Materials Letters（2020）

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摘要

•Cu doped PrBaCo2O5+δ (PBCCu) electrocatalyst was synthesized through ECCP method.•The valence state of Co4+ and Co2+ ions were changed to Co3+ and the valence band maximum increased with Cu doping.•The Cu doping upon PrBaCo2O5+δ generated oxygen vacancies in the lattice and reduced the polarization resistance.

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关键词

PrBaCo2-xCuxO5+δ,Electrocatalyst,Electronic structure,Valence band,Polarization resistance

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