Positive electrode catalyst and device
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United States of America Patent
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Jul 4, 2017
Grant Date -
Dec 17, 2015
app pub date -
Jan 28, 2014
filing date -
Jan 30, 2013
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Abstract
A positive electrode catalyst, for use in a positive electrode in a device provided with the positive electrode and a negative electrode, in which a reaction represented by 4OH−→O2+2H2O+4e− is performed on a side of the positive electrode. The positive electrode catalyst includes a layered metal oxide, wherein the layered metal oxide is a Ruddlesden-Popper type layered perovskite represented by (La1-xAx) (Fe1-yBy)3(Sr1-zCz)3O10-a wherein, A is a rare earth element other than La, B is a transition metal other than Fe, and C is an alkaline earth metal other than Sr; and x satisfies an expression: 0≦x<1, y satisfies an expression: 0≦y<1, z satisfies an expression: 0≦z<1, and a satisfies an expression: 0≦a≦3.
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