Preparation method of sodium ion transition metal oxide positive electrode material

A transition metal and cathode material technology, which is applied in the field of preparation of sodium ion transition metal oxide cathode materials, can solve the problems of impairing battery cycle life and rate performance, lacking cycle performance and rate performance, and hindering the practical application of sodium ion batteries. , to achieve the effect of improving cycle stability, promoting practical application, excellent cycle performance and rate performance

Active Publication Date: 2021-03-16
徐州浩华能源科技有限公司
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Benefits of technology

This patented technology improves the structure and durability of lithiated manganese oxide (LMO) materials used for making high capacity battery cells due to improved stabilization caused by adding certain elements like zinc or other metals that enhance their properties such as reducing resistance at elevated temperatures. These improvements make LMs more reliable over time with longer lifespan compared to older methods.

Problems solved by technology

This patented technical problem addressed in this patents relates to how current commercial Li ion batteries (LIBs) suffer from overuse or shortage of available lithiated carbon sources that can lead to structural damage and limit its usefulness for future applications.

Method used

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  • Preparation method of sodium ion transition metal oxide positive electrode material
  • Preparation method of sodium ion transition metal oxide positive electrode material
  • Preparation method of sodium ion transition metal oxide positive electrode material

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preparation example Construction

[0024] The invention provides a technical solution: a method for preparing a sodium ion transition metal oxide positive electrode material, the preparation method comprising the following steps:

[0025] S1, mixing: first take out stoichiometric sodium acetate trihydrate, manganese acetate tetrahydrate, nickel acetate tetrahydrate, cobalt acetate tetrahydrate, magnesium acetate, zinc acetate dihydrate and citric acid, and uniformly dissolve them in quantitative water, then After fully stirring and dissolving, transfer to a water bath and continue stirring until gelatinous;

[0026] S2, grinding and firing: take out the gel material and put it in an oven for drying, then put it into an agate mortar and grind it thoroughly after drying, then put it into a muffle furnace for firing to remove the residual organic matter inside, wait After cooling, grind again, and finally continue to burn in the muffle furnace for 10 hours;

[0027] S3, Forming: After the material is cooled to ro...

example 1

[0036] The invention provides a technical solution: a chemical fiber composite material and a preparation method thereof, the preparation method comprising the following steps:

[0037] S1, mixing: first take out stoichiometric sodium acetate trihydrate, manganese acetate tetrahydrate, nickel acetate tetrahydrate, cobalt acetate tetrahydrate, magnesium acetate, zinc acetate dihydrate and citric acid, and uniformly dissolve them in quantitative water, then After fully stirring and dissolving, transfer to a water bath and continue stirring until gelatinous;

[0038] S2, grinding and firing: take out the gel material and put it in an oven for drying, then put it into an agate mortar and grind it thoroughly after drying, then put it into a muffle furnace for firing to remove the residual organic matter inside, wait After cooling, grind again, and finally continue to burn in the muffle furnace for 10 hours;

[0039] S3, Forming: After the material is cooled to room temperature, th...

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Abstract

The invention discloses a preparation method of a sodium ion transition metal oxide positive electrode material, which comprises the following steps: S1, mixing: taking out stoichiometric sodium acetate trihydrate, manganese acetate tetrahydrate, nickel acetate tetrahydrate, cobalt acetate tetrahydrate, magnesium acetate, zinc acetate dihydrate and citric acid, and conducting uniform dissolving inquantitative water, then fully conducting stirring and dissolving, transferring the solution into a water bath kettle, and continuously conducting stirring to a gel state. According to a prepared sodium ion positive plate, the Zn element is doped in the sodium ion positive plate, so that the Jahn-Teller effect of Mn<3+> ions can be effectively weakened, and the structural stability of the positive electrode material in the circulation process is better improved, so that the cycle life of the prepared material and improving the rate capability of the prepared material is effectively prolonged,the Zn doping amount can be further increased, the cycling stability of the material can be continuously improved, the material has excellent cycling performance and rate capability in use, the positive electrode material can effectively promote the practical application of the sodium ion battery, and the practicability is relatively high.

Description

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Claims

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Application Information

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Owner 徐州浩华能源科技有限公司
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