Lithium ion battery based on recycled active material and preparation method thereof

By recycling and repairing lithium iron phosphate and graphite materials in waste lithium-ion batteries, as the active materials of new lithium-ion batteries, the problem of material recycling after the decommissioning of lithium-ion batteries is solved, and low-cost and high-low-temperature performance is achieved.

CN120048976APending Publication Date: 2025-05-27安徽得壹能源科技有限公司
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Patent Information

Application Number
CN202510150592.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-11
Publication Date
2025-05-27

AI Technical Summary

Technical Problem

After the existing lithium-ion batteries are retired, it is difficult to effectively recycle and reuse materials, resulting in waste of resources and environmental pollution. At the same time, the high-temperature performance of new lithium-ion batteries is insufficient.

Method used

By recycling and repairing lithium iron phosphate and graphite materials in waste lithium-ion batteries, it is used as the positive and negative active materials of the new lithium-ion batteries, and repairing material defects by controlling process conditions to improve the low-temperature performance of the battery.

Benefits of technology

It realizes low-cost preparation and higher low-temperature performance of lithium-ion batteries, while reducing resource waste and environmental pollution.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The invention belongs to the technical field of lithium ion batteries, and relates to a lithium ion battery based on recycled active materials and a preparation method thereof. Comprising a positive pole piece, a negative pole piece, a diaphragm and electrolyte, wherein a positive active material adopted in the positive pole piece is lithium iron phosphate recovered and repaired from the waste lithium ion battery, and a negative active material adopted in the negative pole piece is graphite recovered and repaired from the waste lithium ion battery. According to the invention, the lithium ion battery is re-prepared from the active components recovered from the waste lithium ion battery, so that the cost can be reduced, and the lithium ion battery is accidentally found to have higher low-temperature performance.
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