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- W2314902823 abstract "Carbon-supported La1–xCaxMn1–yFeyO3 nanoparticles were synthesized, and their oxygen reduction activities and electronic states were investigated. A reverse micelle method using KMnO4 as a source of high valence state Mn successfully yielded carbon-supported La1–xCaxMn1–yFeyO3 nanoparticles even when calcined under a reducing atmosphere. The oxygen reduction activity of carbon-supported La1–xCaxMn1–yFeyO3 exceeded that of carbon-supported Pt nanoparticles when the Ca composition was limited to the range of 0.4 to 0.8. X-ray photoelectron spectroscopy (XPS) measurements of La1–xCaxMn1–yFeyO3 particle surfaces revealed the existence of Mn4+, which is important in the oxygen reduction activity. Depth analysis of La1–xCaxMn1–yFeyO3 nanoparticles by XPS revealed the formation of a CaCO3 impurity and an A-site deficient perovskite-type oxide containing a high surface concentration of Mn4+." @default.
- W2314902823 created "2016-06-24" @default.
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- W2314902823 date "2013-07-25" @default.
- W2314902823 modified "2023-09-23" @default.
- W2314902823 title "Oxygen Reduction Activity of Carbon-Supported La<sub>1–<i>x</i></sub>Ca<sub><i>x</i></sub>Mn<sub>1–<i>y</i></sub>Fe<sub><i>y</i></sub>O<sub>3</sub> Nanoparticles" @default.
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- W2314902823 doi "https://doi.org/10.1021/cm401276y" @default.
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