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US 2026/0058155 A1Published application
Secondary battery electrode, secondary battery, and production method therefor
AssigneeNational University Corporation Yamagata University
InventorsManabu ISHIZAKI, Masato KURIHARA
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Abstract
An electrode for a secondary battery, including carbon nanotubes and active material particles having an average particle size of 2 to 1000 nm supported in a state of being dispersed in the carbon nanotubes, wherein a mass ratio of the carbon nanotubes to a total mass of the active material particles and the carbon nanotubes is 0.1 wt % or more.
Claims19
An electrode for a secondary battery, comprising
- carbon nanotubes, and
- active material particles having an average particle size of 2 to 1000 nm supported in a state of being dispersed in the carbon nanotubes,
- wherein a mass ratio of the carbon nanotubes to a total mass of the active material particles and the carbon nanotubes is 0.1 wt % or more, and
- the active material particles have a positive or negative surface charge, or are surface-modified with organic compounds having an alkyl chain.
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A method for producing an electrode for a secondary battery, comprising:
- surface-modifying active material particles having an average particle size of 2 to 1000 nm to prepare a dispersion liquid of the active material particles in which the surface-modified active material particles are dispersed;
- preparing a dispersion liquid of carbon nanotubes;
- mixing the dispersion liquid of the active material particles and the dispersion liquid of the carbon nanotubes so that a mass ratio of the carbon nanotubes to a total mass of the active material particles and the carbon nanotubes is 0.1 wt % or more to form a mixed liquid;
- and
- applying the mixed liquid onto a substrate to obtain an electrode film.
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Dependencies are inferred from the claim text.