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ZnMn2O4 negative electrode material as well as preparation method and application thereof

A negative electrode material and mixed salt technology, applied in the field of ZnMn2O4 negative electrode materials, can solve the problems of high cost and complicated preparation process, and achieve the effects of improving cycle performance, abundant natural resources, and alleviating volume effect

Pending Publication Date: 2021-04-23
EVE ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, these methods limit ZnMn due to high cost and complicated preparation process. 2 o 4 Development and Application of Negative Electrode Materials

Method used

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  • ZnMn2O4 negative electrode material as well as preparation method and application thereof
  • ZnMn2O4 negative electrode material as well as preparation method and application thereof
  • ZnMn2O4 negative electrode material as well as preparation method and application thereof

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Effect test

Embodiment 1

[0038] This embodiment provides a ZnMn 2 o 4 The preparation method of negative electrode material, described preparation method comprises:

[0039] (1) Zinc sulfate and manganese sulfate according to ZnMn 2 o 4 The stoichiometric ratio was weighed and dissolved in 5mL of deionized water to form a mixed salt solution, and the sucrose and the mixed salt solution were mixed and dissolved to obtain a mixed solution. The quality of the sucrose was 25% by weight of the mixed salt solution;

[0040] (2) Transfer the mixed liquid to a porcelain boat, put the porcelain boat into a blast drying device for drying treatment, the drying temperature is 60°C, and the drying time is 3h. When a film is formed on the surface of the mixed liquid, transfer the porcelain boat To the muffle furnace for annealing treatment, the annealing temperature is 500 ° C, the annealing time is 3h, after annealing to get ZnMn 2 o 4 Negative material.

Embodiment 2

[0042] This embodiment provides a ZnMn 2 o 4 The preparation method of negative electrode material, described preparation method comprises:

[0043] (1) Zinc chloride and manganese chloride according to ZnMn 2 o 4 The stoichiometric ratio was weighed and dissolved in 5mL deionized water to form a mixed salt solution, and the sucrose and the mixed salt solution were mixed and dissolved to obtain a mixed solution. The quality of the sucrose was 27% by weight of the mixed salt solution;

[0044] (2) Transfer the mixed liquid to a porcelain boat, put the porcelain boat into a blast drying device for drying treatment, the drying temperature is 64°C, and the drying time is 2.8h. When a film is formed on the surface of the mixed liquid, put the porcelain boat Transfer to the muffle furnace for annealing treatment, the annealing temperature is 540°C, the annealing time is 2.6h, after annealing, ZnMn 2 o 4 Negative material.

Embodiment 3

[0046] This embodiment provides a ZnMn 2 o 4 The preparation method of negative electrode material, described preparation method comprises:

[0047] (1) Zinc nitrate and manganese nitrate according to ZnMn 2 o 4 The stoichiometric ratio was weighed and dissolved in 5mL of deionized water to form a mixed salt solution, and the sucrose and the mixed salt solution were mixed and dissolved to obtain a mixed solution. The quality of the sucrose was 29% by weight of the mixed salt solution;

[0048] (2) Transfer the mixed liquid to a porcelain boat, put the porcelain boat into a blast drying device for drying treatment, the drying temperature is 68°C, and the drying time is 2.6h. When a film is formed on the surface of the mixed liquid, put the porcelain boat Transfer to the muffle furnace for annealing treatment, the annealing temperature is 580°C, the annealing time is 2.2h, after annealing, ZnMn 2 o 4 Negative material.

[0049] Prepared ZnMn 2 o 4 The XRD pattern of the ...

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Abstract

The invention provides a ZnMn2O4 negative electrode material as well as a preparation method and application thereof. The preparation method comprises the following steps of taking a mixed salt solution of a zinc source and a manganese source as a raw material, taking cane sugar as a soft template agent, and preparing the ZnMn2O4 negative electrode material by adopting a soft template method. Cane sugar is used as a soft template agent and is directly roasted after being added into the raw material, the preparation process is simple and convenient, the raw material cost is low, no pollution is caused, and the preparation method is a feasible preparation method for the ZnMn2O4 electrode material.

Description

technical field [0001] The invention belongs to the technical field of negative electrode materials, and relates to a ZnMn 2 o 4 Negative electrode material, its preparation method and use. Background technique [0002] Lithium-ion batteries have the advantages of high energy density, no memory effect, long cycle life, and environmental friendliness, and are widely used in the field of portable electronic devices. In recent years, the application of lithium-ion batteries in the field of high-power and long-life batteries such as electric vehicles and hybrid electric vehicles has also received more and more attention. At present, graphite-based anode materials are widely used in lithium-ion batteries. On the one hand, carbon-based anode materials have the advantages of low price, electrochemical inertness, and low charge-discharge platform; on the other hand, they provide deposition sites during the intercalation and extraction of lithium ions, reducing the formation of li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G45/12H01M4/505H01M10/0525H01M4/485
CPCY02E60/10
Inventor 张天戈邓松辉陈志伟王理刘金成刘建华
Owner EVE ENERGY CO LTD
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