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Method of preparing CoPi catalyst through green recovered waste lithium cobaltate battery

A lithium cobalt oxide and catalyst technology, which is applied in the field of green recycling of waste lithium cobalt oxide batteries to prepare CoPi catalysts, can solve the problem that the value of waste lithium batteries cannot be better explored, the electrochemical energy is difficult to reach the quality of lithium cobalt oxide materials, and the global resources Shortage and other problems, to achieve the effect of increasing value, not easy to secondary pollution, simple and controllable process

Active Publication Date: 2020-02-07
XUCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of method is complex in process, and its electrochemical energy is difficult to reach the quality of commercial lithium cobalt oxide materials after regeneration
[0007] None of the above methods can better explore the value of waste lithium batteries. If other functional materials can be prepared from waste lithium-ion battery cathode materials, their value will be doubled.
For example, due to the current energy shortage, with the massive burning of fossil fuels, not only will the global resource shortage, but also cause environmental pollution

Method used

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  • Method of preparing CoPi catalyst through green recovered waste lithium cobaltate battery
  • Method of preparing CoPi catalyst through green recovered waste lithium cobaltate battery
  • Method of preparing CoPi catalyst through green recovered waste lithium cobaltate battery

Examples

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Embodiment 1

[0039] Example 1, see Figure 1-7 :

[0040] The invention provides a method for green recycling of waste lithium cobalt oxide batteries to prepare CoPi catalysts, comprising the following steps:

[0041] 1) Disassemble the battery, separate copper foil, aluminum foil, positive electrode material lithium cobalt oxide and negative electrode material;

[0042] 2) First weigh 0.8406g of citric acid (4mmol), dissolve it in 16ml of deionized water, then drop 4ml of methanol into it, and finally weigh 0.098g of lithium cobaltate (see figure 2 Medium Spent LiCoO 2XRD), put it into a 25ml reaction kettle after ultrasonic dispersion for 10min, place it in a constant temperature drying oven, keep the temperature at 160°C for 10h, and dissolve it with water heat.

[0043] 3) Using the three-electrode deposition method, the mixture of leach solution A and phosphate buffer solution is used as the electrolyte, and the CoPi catalyst is obtained by electrodeposition on the cleaned FTO con...

Embodiment 2

[0046] Example 2, see figure 1 , 2 :

[0047] The present invention provides a kind of method that green reclaims waste lithium cobaltate battery and prepares CoPi catalyst, and wherein the specific process of dissolving is basically the same as embodiment 1, difference is: lithium cobaltate is commercial lithium cobaltate (1mmol) powder (see figure 2 Medium Uncycled LiCoO 2 XRD). The obtained leach solution A was clear and pink. as attached figure 1 As shown, the solution is basically the same as the standard solution. It shows that the method can completely dissolve the lithium cobaltate powder.

Embodiment 3

[0049] The present invention provides a method for green recycling waste lithium cobalt oxide batteries to prepare CoPi catalysts, wherein the specific process of dissolving is basically the same as that of Example 1, except that the reaction temperature is 140°C. This temperature cannot completely dissolve the substance, indicating that the dissolution temperature needs to be at least 160°C.

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Abstract

The invention provides a method of preparing a CoPi catalyst through a green recovered waste lithium cobaltate battery. The method comprises the steps that the battery is disassembled, and copper foil, aluminum foil, anode material lithium cobaltate and a negative material are separated; citric acid and a methanol aqueous solution are used for hydrothermally dissolving the lithium cobaltate material to obtain a leach liquor A; and a three-electrode deposition method is adopted, a mixed solution of the leach liquor A and a phosphoric acid buffer solution is used as an electrolytic solution, andelectro-deposition is performed on a cleaned FTO conductive glass substrate or the surface of an iron oxide thin film to obtain the CoPi catalyst. According to the method, the citric acid is adoptedto hydrothermally dissolve lithium cobaltate in the waste lithium cobaltate battery, the leach liquor is combined with the phosphoric acid buffer solution to serve as the electrolytic solution, and the three-electrode method is adopted to perform constant-voltage electrochemical deposition to obtain the CoPi catalyst; and the method has the advantages that the environment is protected, energy andtime are saved, equipment is simple, operation is easy and convenient to perform, the obtained target product has high electrochemical activity, and the process is simple, controllable, suitable for large-scale production and the like.

Description

technical field [0001] The invention relates to the technical field of manufacturing inorganic non-metallic materials, and specifically relates to a method for green recycling of waste lithium cobalt oxide batteries to prepare CoPi catalysts. Background technique [0002] With the invention and wide application of batteries, our life and work have become more convenient, but at the same time, a lot of waste batteries are produced. In addition, due to the shortage of fossil energy, the application of batteries will be more extensive, especially lithium-ion secondary batteries. If it is not handled properly or discarded anywhere, it will cause serious pollution to soil and water sources. [0003] Since the commercialization of lithium-ion batteries in the 1990s, they have been widely used in mobile phones, laptop computers, Electronic toys and other fields are now rapidly expanding to the fields of electric vehicles, electric vehicles and energy storage devices. Among them,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/78C25B11/06C25B1/04
CPCB01J23/78C25B11/04C25B1/04B01J35/33Y02P20/584Y02E60/36
Inventor 杨晓刚梅婉婉仝玉萍张振李品将雷岩郑直吴其华葛德培
Owner XUCHANG UNIV
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