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US 2024/0194898 A1Published application
Electrode for redox flow battery and method for producing electrode for redox flow battery
AssigneeAsahi Kasei Kabushiki Kaisha
InventorsAtsushi SUZUKI, Junya YAMASHITA, Yoshimichi MITAMURA
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Abstract
An electrode for a redox flow battery including a carbon structural body, wherein, in a measurement of surface functional group concentrations of the carbon structural body, a carbon concentration is 82.0% or higher and 98.0% or lower, a nitrogen concentration is 1.0% or higher and 10.0% or lower, and an oxygen concentration is 1.0% or higher and 8.0% or lower.
Claims19
An electrode for a redox flow battery comprising a carbon structural body,
- wherein, in a measurement of surface functional group concentrations of the carbon structural body, a carbon concentration is 82.0% or higher and 98.0% or lower, a nitrogen concentration is 1.0% or higher and 10.0% or lower, and an oxygen concentration is 1.0% or higher and 8.0% or lower.
A method for producing an electrode for a redox flow battery comprising a carbon structural body, the method comprising:
- surface oxidation by bringing a carbon material having a carbon concentration of 92.0% or higher in a measurement of surface functional group concentrations into contact with a first gas comprising nitrogen and oxygen, to thereby obtain a carbon structural body precursor;
- and
- surface modification by, after the surface oxidation, bringing the carbon structural body precursor into contact with a second gas comprising ammonia to thereby obtain a carbon structural body,
- wherein, in the measurement of the surface functional group concentrations of the carbon structural body, an oxygen concentration is 1.0% or higher and 8.0% or lower.
1 more element
Dependencies are inferred from the claim text.