Oxygen catalyst, electrode using the same, and electrochemical measurement method
AssigneeThe Doshisha
InventorMasatsugu Morimitsu
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Abstract
In a case where an alkali aqueous solution is used as an electrolyte, provided are an oxygen catalyst excellent in catalytic activity and composition stability, an electrode having high activity and stability using this oxygen catalyst, and an electrochemical measurement method that can evaluate the catalytic activity of the oxygen catalyst alone. The oxygen catalyst is an oxide having peaks at positions of 2θ=30.07°±1.00°, 34.88°±1.00°, 50.20°±1.00°, and 59.65°±1.00° in an X-ray diffraction measurement using a CuKα ray, and having constituent elements of bismuth, ruthenium, sodium, and oxygen. An atom ratio O/Bi of oxygen to bismuth and an atom ratio O/Ru of oxygen to ruthenium are both more than 3.5.
Claims16
An oxygen catalyst in a system that uses an alkali aqueous solution as an electrolyte, the oxygen catalyst being an oxide having peaks at positions of 2θ=30.07°±1.00°, 34.88°±1.00°, 50.20°±1.00°, and 59.65°±1.00° in an X-ray diffraction measurement using a CuKα ray and having constituent elements of bismuth, ruthenium, sodium, and oxygen, wherein an atom ratio of the oxygen to the bismuth, O/Bi and an atom ratio of the oxygen to the ruthenium, O/Ru are both more than 3.5.
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