Method for deeply cleaning waste 111 type ternary lithium battery positive electrode powder through high-energy electromagnetic waves

By using high-energy electromagnetic wave treatment and hydroxyl radical (OH) decomposition, the problem of organic matter in lithium-ion battery cathode powder affecting wet recycling has been solved, achieving pollution-free and efficient cathode powder recycling, reducing reagent costs and recovering valuable materials.

CN121939019APending Publication Date: 2026-04-28SHENZHEN SUBANG ENERGY TECH CO LTD
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Patent Information

Application Number
CN202310408970.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2023-04-13
Publication Date
2026-04-28

AI Technical Summary

Technical Problem

The presence of organic matter in existing lithium-ion battery cathode powder affects the effectiveness of wet recycling processes, leading to increased hydrogen peroxide consumption and the generation of organic wastewater, causing environmental pollution.

Method used

High-energy electromagnetic waves are used to treat waste lithium battery cathode powder, causing it to physically ionize into LiNi1/3Co1/3Mn1/3O2+ and e-. Subsequently, hydroxyl radicals ·OH and atomic hydrogen H are used to decompose organic binders and organic solvents, generating harmless small molecule substances. Acetylene black is then released into the air for recycling.

Benefits of technology

It achieves clean recycling without secondary pollution, reduces the reagent costs of wet recycling processes, avoids the generation of organic wastewater, recovers aluminum foil and acetylene black, and improves recycling efficiency.

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Abstract

The invention relates to the field of lithium ion battery resource utilization, in particular to a method for deeply cleaning waste 111 type ternary lithium battery positive electrode powder through high-energy electromagnetic waves. The method comprises the following steps: discharging, disassembling, crushing and powdering a waste 111 type ternary lithium battery to obtain the waste 111 type ternary lithium positive electrode powder; the 111-type ternary lithium positive electrode powder is ionized by high-energy electromagnetic waves, and the ionized 111-type ternary lithium positive electrode powder has extremely high chemical activity and can react with water molecules at normal temperature to generate hydroxyl free radicals. OH and atomic hydrogen H; organic matters in the 111 type ternary lithium positive electrode powder are converted into harmless CO2 and H2O under the action of the atomic hydrogen H and the hydroxyl free radical. OH.
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