Electrode tab and lithium-ion battery

CN224304681UActive Publication Date: 2026-05-29DRAGONFLY LAB (SHENZHEN) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DRAGONFLY LAB (SHENZHEN) CO LTD
Filing Date
2025-05-23
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

In the process of increasing the energy density of existing lithium-ion batteries, the expansion or contraction of the positive and negative electrode materials can lead to insufficient electrolyte, resulting in deterioration of battery rate performance and safety hazards.

Method used

The electrolyte retainer particles with a porous structure, an average pore size of less than 80 nm, a pore size of less than 50 nm accounting for more than 70%, and an oil absorption value of more than 200 ml/100 g are used. These electrolyte retainer particles are combined with conductive agent particles to form the active material layer of the electrode plate, thereby enhancing electrolyte storage and conductivity.

Benefits of technology

It improves the rate performance and safety of the battery by stabilizing the electrolyte, maintaining a good ion conduction environment, reducing resistance, and improving the overall efficiency of the battery.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224304681U_ABST
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Abstract

The utility model relates to the technical field of lithium ion battery provides an electrode pole piece and lithium ion battery, the electrode pole piece includes current collector and the active material layer of being located the surface of current collector, the active material layer includes the active material particle, conductive agent particle and liquid retention agent particle of uniform mixing, the liquid retention agent particle is the particle with porous structure, the average pore size of liquid retention agent particle is less than 80nm, wherein the pore size less than 50nm accounts for all liquid retention agent's weight ratio is more than 70%, the average particle size of liquid retention agent particle is less than 8mu m, the oil absorption value of liquid retention agent particle is more than 200ml / 100g, liquid retention agent particle is used to absorb and keep electrolyte, the conductive agent particle is used to provide the conductive path of connecting current collector to reduce the resistance of electrode pole piece, the active material particle is used to participate in the electrochemical reaction of positive pole or negative pole, the electrode pole piece is through the electrolyte storage of improving pole piece inside to improve the safety and battery rate performance.
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