Lithium ion battery positive electrode material and preparation method and application thereof

A battery positive electrode, potassium ion technology, applied in the direction of battery electrodes, electrolyte storage battery manufacturing, batteries, etc., to achieve good application prospects, low cost, short cycle effect

Active Publication Date: 2017-04-26
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are still few research reports on positive electrode materials. At present, the reports are mainly organic compounds such as

Method used

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  • Lithium ion battery positive electrode material and preparation method and application thereof
  • Lithium ion battery positive electrode material and preparation method and application thereof
  • Lithium ion battery positive electrode material and preparation method and application thereof

Examples

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Embodiment 1

[0032] A kind of potassium ion battery K 0.67 (Ni 0.167 co 0.167 mn 0.666 )O 2 A method for preparing a positive electrode material, comprising the steps of:

[0033] (1) 43.90g of nickel sulfate hexahydrate, 46.94g of cobalt sulfate heptahydrate and 131.81g of manganese chloride tetrahydrate were dissolved in 1L of deionized water, stirred and dissolved evenly to obtain a mixed metal ion salt solution;

[0034] (2) pump the mixed metal ion salt solution that step (1) obtains into the continuous stirred tank reactor with a peristaltic pump, and add 106g concentration simultaneously and be the sodium carbonate solution of 1.0mol / L; Add ammoniacal liquor to adjust the pH value to 8, react The temperature of the solution in the vessel was controlled at 60°C, protected by nitrogen, and continuously stirred at a speed of 500rmp for 4 hours to obtain a carbonate precursor solution;

[0035] (3) Filter the carbonate precursor solution obtained in step (2), wash it repeatedly wit...

Embodiment 2

[0041] A kind of potassium ion battery K 0.67 (Ni 0.45 co 0.45 mn 0.1 )O 2 A method for preparing a positive electrode material, comprising the steps of:

[0042] (1) Dissolve 106.96g nickel chloride hexahydrate, 107.07g cobalt chloride hexahydrate and 19.79g manganese chloride tetrahydrate in 1L deionized water, stir and dissolve evenly to obtain a mixed metal ion salt solution;

[0043] (2) pump the mixed metal ion salt solution that step (1) obtains into the continuous stirred tank reactor with a peristaltic pump, add 312g concentration simultaneously and be the sodium carbonate solution of 2.0mol / L; Add ammoniacal liquor to adjust the pH value to 10, react The temperature of the solution in the container was controlled at 55°C, protected by nitrogen, and stirred continuously at a speed of 550rmp for 6 hours to obtain a carbonate precursor solution;

[0044] (3) Filter the carbonate precursor solution obtained in step (2), wash it repeatedly with deionized water 5 time...

Embodiment 3

[0047] A kind of potassium ion battery K 0.67 (Ni 0.45 co 0.21 mn 0.34 )O 2 A method for preparing a positive electrode material, comprising the steps of:

[0048] (1) 118.28g nickel sulfate hexahydrate, 59.03g cobalt sulfate heptahydrate and 57.46g manganese sulfate monohydrate were dissolved in 1L deionized water, stirred and dissolved evenly to obtain mixed metal ion salt solution;

[0049] (2) pump the mixed metal ion salt solution that step (1) obtains into the continuous stirred tank reactor with a peristaltic pump, add 159g concentration simultaneously and be the sodium carbonate solution of 1.5mol / L; Add ammoniacal liquor to adjust the pH value to 11, react The temperature of the solution in the vessel was controlled at 60°C, protected by argon, and stirred continuously at a speed of 800rmp for 8 hours to obtain a carbonate precursor solution;

[0050] (3) Filter the carbonate precursor solution obtained in step (2), wash it repeatedly with deionized water 5 times...

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Abstract

The invention discloses a lithium ion battery positive electrode material and a preparation method and application. The preparation method of the lithium ion battery positive electrode material comprises the following steps of (1) dissolving a soluble nickel salt, a soluble cobalt salt and a soluble manganese salt in deionized water to obtain a mixed metal ion salt solution with certain concentration, wherein the valence states of nickel, cobalt and manganese in the nickel salt, the cobalt salt and the manganese salt are all right bivalent; (2) adding the mixed metal ion salt solution into a kettle reactor, simultaneously adding a sodium carbonate solution, adding ammonia water again to adjust a pH value to 8-11, controlling a temperature to 55-60 DEG C, performing protection with an inert gas, and performing continuous stirring; (3) filtering a carbonate precursor solution, washing the product with the deionized water, and placing the product a drying oven for drying; and (4) grinding precursor powder, performing pre-sintering, adding anhydrous potassium carbonate, performing mechanical ball-grinding, and performing high-temperature solid-phase sintering to obtain the positive electrode material with a chemical formula K<x>(Ni<y>Co<z>Mn<1-y-z>)O<2>. The preparation method has the advantages of simple operation, short period and low cost.

Description

technical field [0001] The present disclosure generally relates to the technical field of positive electrode materials, and in particular relates to a positive electrode material for a potassium ion battery and a preparation method and application thereof. Background technique [0002] Lithium-ion batteries have been widely used in various portable electronic products, electric vehicles and hybrid electric vehicles due to their high energy density and excellent energy storage performance. However, the reserves of lithium resources are very limited, and it is difficult to meet the needs of long-term development in the future. Therefore, people have turned their attention to other metal elements that are rich in resources on the earth. At present, sodium-ion batteries, magnesium-ion batteries, aluminum-ion batteries and Potassium ion battery. [0003] Potassium, lithium and sodium are all in the first main group of the periodic table, with similar physical and chemical proper...

Claims

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Application Information

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IPC IPC(8): H01M4/50H01M4/52H01M10/054H01M10/058
CPCH01M4/502H01M4/523H01M10/054H01M10/058H01M2220/20Y02E60/10Y02P70/50
Inventor 罗绍华刘彩玲黄红波包硕胡东北孙阳李家玉
Owner NORTHEASTERN UNIV
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