Strong covalent manganese oxide-based fenton catalyst based on resource utilization of waste high-manganese ternary lithium battery and preparation method and application thereof

By introducing highly electronegative Co and Ni as dopants into spent high-manganese ternary lithium batteries, the MnOx-based Fenton catalyst was modified, solving the problems of lengthy and complex separation-purification processes and insufficient catalytic activity, thus achieving efficient degradation of organic pollutants in water and high-value utilization of resources.

CN120999006BActive Publication Date: 2026-07-21SHANGHAI JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI JIAOTONG UNIV
Filing Date
2025-08-29
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing technologies for treating waste high-manganese ternary lithium batteries suffer from lengthy and complex separation-purification processes, high energy consumption, and low product added value. Furthermore, the redox cycle of MnOx-based Fenton catalysts is limited, resulting in insufficient catalytic activity.

Method used

By introducing highly electronegative Co and Ni as dopants into spent high-manganese ternary lithium batteries, MnOx-based Fenton catalysts are modified, enhancing Mn-O covalentity, realizing the redox cycle of Mn(II)/Mn(III)/Mn(IV), and accelerating catalyst activity.

Benefits of technology

It improves the activity of MnOx-based Fenton catalysts, realizes the high-value utilization of low-value Mn in waste high-manganese ternary lithium batteries, achieves high efficiency in degrading organic pollutants in water, and recovers high-value Li, thus simplifying the resource treatment process.

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Abstract

This invention provides a strongly covalent manganese oxide-based Fenton-like catalyst for the resource recovery of spent high-manganese ternary lithium batteries, its preparation method, and its application. Based on the electronegativity difference between metal elements, this invention utilizes highly electronegative Co and Ni as dopants to enhance the performance of MnO. x Modification of basic Fenton catalysts to enhance MnO x The covalent nature of Mn-O accelerates the redox cycle of Mn, thereby significantly increasing the MnO content. x The activity of Fenton-like catalysts. Furthermore, this invention employs a resource-based process, using waste high-manganese ternary LIBs as raw materials. By optimizing the acid leaching system, a strongly covalent manganese oxide-based Fenton-like catalyst is prepared, achieving the recovery of high-value Li. This effectively alleviates the problems of lengthy and complex traditional resource-based processes, high energy consumption, and low product added value. It not only provides a new approach for the preparation of highly active Fenton-like catalysts but also offers a new application pathway for the sustainable resource utilization of waste high-manganese ternary LIBs.
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