Recovery method for waste lithium ion battery anode materials based on mechano-chemical method

A technology of lithium-ion battery and mechanochemical method, which is applied in the field of recycling waste lithium-ion battery positive electrode materials, can solve the problems of high cost, great environmental hazards of waste liquid, and low recovery rate, and achieve low cost, low environmental hazard, High economical effect
CN110791652AActive Publication Date: 2020-02-14HUAZHONG UNIV OF SCI & TECH
4 Cites 15 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUAZHONG UNIV OF SCI & TECH
Publication Date
2020-02-14

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a recovery method for waste lithium ion battery anode materials based on a mechano-chemical method, and belongs to the field of waste lithium ion battery recycling. The waste lithium ion battery anode materials are ground into powder, the powder is sufficiently and evenly mixed with an activating agent and an organic reducing agent, the activating agent can generate activefree radicals, a mixture is obtained, the mixture is subjected to ball grinding, the waste lithium ion battery anode materials generate plastic deformation, lattice imperfection is generated in crystal particles, and the crystal particles generate crystal transfer or are not crystallized; and products obtained after ball grinding are added into deionized water, and valuable metal ions are leached.The method does not depend on high-concentration strong acid, strong base, strong oxidization reducing reagents, expensive organic acid and the like, the mechano-chemical reaction in a solid phase isadopted as a reaction body, and efficient leaching of valuable metal lithium, cobalt, nickel, manganese and the like in the waste lithium ion battery anode materials is achieved under the mild leaching environment.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of recycling waste lithium ion batteries, in particular to a method for recycling positive electrode materials of waste lithium ion batteries based on a mechanochemical method. Background technique

[0002] In the past ten years, with the increasing popularity of domestic new energy vehicles, the expanding scope of clean energy development, and the increasing penetration of portable electronic devices in daily life, my country's demand for secondary batteries has continued to rise, and the annual output of secondary batteries increase yearly. As a secondary battery with small size, light weight, long cycle life and high specific energy density, lithium-ion battery has become an important part of the power battery, energy storage battery and consumer battery market. The normal charge-discharge cycle life of lithium-ion batteries is 1000-3000 times, and the service life is 3-5 years. Therefore, the huge demand for lithi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More