TY - JOUR
T1 - Oxygen electrocatalysis on (001)-oriented manganese perovskite films
T2 - Mn valency and charge transfer at the nanoscale
AU - Stoerzinger, Kelsey A.
AU - Risch, Marcel
AU - Suntivich, Jin
AU - Lü, W. M.
AU - Zhou, Jigang
AU - Biegalski, Michael D.
AU - Christen, Hans M.
AU - Ariando,
AU - Venkatesan, T.
AU - Yang, Shao Horn
PY - 2013/6
Y1 - 2013/6
N2 - We report that the oxygen reduction reaction (ORR) activities of (001)-oriented manganese perovskite films decrease from 10 to 1 nm by more than an order of magnitude, which can be attributed to the barrier associated with interfacial band bending that impedes electron transfer to the electrolyte, and reduction of Mn3+ due to charge transfer from the Nb:SrTiO 3 substrate. Furthermore, we show by substitution in La 1-x(Ca,Sr)xMnO3 that Mn3+, not Mn4+, is the active valence state for ORR.
AB - We report that the oxygen reduction reaction (ORR) activities of (001)-oriented manganese perovskite films decrease from 10 to 1 nm by more than an order of magnitude, which can be attributed to the barrier associated with interfacial band bending that impedes electron transfer to the electrolyte, and reduction of Mn3+ due to charge transfer from the Nb:SrTiO 3 substrate. Furthermore, we show by substitution in La 1-x(Ca,Sr)xMnO3 that Mn3+, not Mn4+, is the active valence state for ORR.
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U2 - 10.1039/c3ee40321a
DO - 10.1039/c3ee40321a
M3 - Article
AN - SCOPUS:84878070618
SN - 1754-5692
VL - 6
SP - 1582
EP - 1588
JO - Energy and Environmental Science
JF - Energy and Environmental Science
IS - 6
ER -
