Conductive components for secondary batteries

A conductive composition with carbon nanotubes, an anionic stabilizer, and specific functional groups addresses the instability in aqueous systems, improving dispersibility and conductivity, thereby enhancing battery performance.

JP7864638B2Active Publication Date: 2026-05-25GRST SINGAPORE PTE LTD
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Patent Information

Authority / Receiving Office
JP Β· JP
Patent Type
Patents
Current Assignee / Owner
GRST SINGAPORE PTE LTD
Filing Date
2021-06-02
Publication Date
2026-05-25

AI Technical Summary

Technical Problem

Existing methods for dispersing carbon nanotubes in aqueous systems for lithium-ion battery cathodes face instability and aggregation issues due to the presence of polymer materials, which affect the conductivity and stability of the battery system.

Method used

A conductive composition comprising carbon nanotubes, an anionic stabilizer, and a polymer material with specific functional groups is used, where the anionic stabilizer provides electrostatic repulsion to stabilize the carbon nanotubes and prevent aggregation, enhancing dispersibility and conductivity.

Benefits of technology

The conductive composition achieves improved stability, conductivity, and electrochemical performance of the electrodes, leading to enhanced battery performance.

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Abstract

Conductive compositions for secondary batteries, slurries containing the same, electrodes containing the same, and methods for making the conductive compositions are provided. The conductive compositions include a polymeric material, a carbon nanomaterial, and an anionic stabilizer. The polymeric material includes a copolymer containing structural units derived from an acid group-containing monomer and structural units derived from a polar group-containing monomer. The conductive compositions exhibit improved stability and dispersibility in water. Furthermore, battery cells containing cathodes made using the conductive compositions disclosed herein exhibit excellent electrochemical performance.
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