Electrode material

By controlling the moisture content of niobium-titanium oxide electrodes between 2,000 ppm and 10,000 ppm and using carboxymethylcellulose, the electrode material's bending strength is enhanced, reducing defects and maintaining high energy density while preventing self-discharge.

JP7864559B2Active Publication Date: 2026-05-25KK TOSHIBA
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Patent Information

Application Number
JP2022098926
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2022-06-20
Publication Date
2026-05-25
Estimated Expiration
2042-06-20

AI Technical Summary

Technical Problem

The niobium titanium-based oxide electrodes tend to crack and become hard when the electrode density is increased, leading to defects such as cracking, chipping, and peeling during handling, which reduces the battery's energy density and increases self-discharge.

Method used

The electrode material is formulated with a moisture content between 2,000 ppm and 10,000 ppm, using niobium-titanium oxide and titanium dioxide, along with a binder like carboxymethylcellulose, to maintain bending strength and prevent cracking, chipping, and peeling, while ensuring high density and reduced self-discharge.

Benefits of technology

The solution improves the bending strength of the electrode material, reduces defects during handling, and maintains high energy density by controlling moisture content, thereby suppressing self-discharge.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

To provide an electrode material that can reduce the occurrence of defects during handling.SOLUTION: An electrode material 101 according to an embodiment includes at least one of a niobium titanium-based oxide and titanium dioxide. Further, the electrode material 101 has a moisture content of 2000 ppm or more and 10000 ppm or less as determined by Karl Fischer method.SELECTED DRAWING: Figure 1
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Citation Information

Patent Citations

  • Electrode plate for nonaqueous electrolyte secondary battery, nonaqueous electrolyte secondary battery and battery pack

    JP2012084413A

  • Secondary battery, battery pack and vehicle

    JP2019053944A