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A kind of water system zn-mn secondary battery cathode material and preparation method thereof

A technology for secondary batteries and positive electrode materials, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of limited research on positive electrode materials for zinc-ion batteries, achieve excellent cycle stability, simple and easy preparation methods, and relatively The effect of large capacity

Active Publication Date: 2022-03-11
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are not many studies on cathode materials for zinc-ion batteries

Method used

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  • A kind of water system zn-mn secondary battery cathode material and preparation method thereof
  • A kind of water system zn-mn secondary battery cathode material and preparation method thereof
  • A kind of water system zn-mn secondary battery cathode material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0031] A method for preparing an aqueous Zn-Mn secondary battery positive electrode material, comprising the following steps:

[0032] Step 1, take 0.210g 1,3,5-trimesic acid (trimesic acid), 0.126g manganese nitrate and 0.188g aluminum nitrate (molar ratio is 1:0.5:0.5) dissolved in 10mL N,N-dimethyl The reaction was carried out in a hydrothermal kettle in a hydrothermal tank with a heating and cooling rate of 2° C. / min at 160° C. to obtain a white solid powder.

[0033] Step 2, calcining the white solid powder in a muffle furnace, calcining at 400°C for 3h, heating and cooling at a rate of 2°C / min, and cooling to room temperature to obtain 0.26g of black solid powder, which is the water-based Zn-Mn secondary battery cathode material.

Embodiment 2

[0035] A method for preparing an aqueous Zn-Mn secondary battery positive electrode material, comprising the following steps:

[0036] Step 1: Dissolve 0.210g of trimesic acid, 0.151g of manganese nitrate and 0.150g of aluminum nitrate (molar ratio: 1:0.6:0.4) in 10mL of DMF, react in a hydrothermal kettle, and react at 160°C After 10 hours, the heating and cooling rate of the reaction was 2°C / min, and a white solid powder was obtained.

[0037] Step 2, calcining the white solid powder in a muffle furnace, calcining at 400°C for 3 hours, cooling to room temperature at a heating and cooling rate of 2°C / min, to obtain 0.23g of black solid powder, which is the water-based Zn-Mn secondary battery cathode material.

Embodiment 3

[0039] A method for preparing an aqueous Zn-Mn secondary battery positive electrode material, comprising the following steps:

[0040] Step 1: Dissolve 0.210g of trimesic acid, 0.176g of manganese nitrate and 0.113g of aluminum nitrate (molar ratio: 1:0.7:0.3) in 10mL of DMF, react in a hydrothermal kettle, and react at 160°C After 10 hours, the heating and cooling rate of the reaction was 2°C / min, and a white solid powder was obtained.

[0041] Step 2, calcining the white solid powder in a muffle furnace, calcining at 400°C for 3 hours, cooling to room temperature at a heating and cooling rate of 2°C / min, and obtaining 0.27g of black solid powder, which is the water-based Zn-Mn secondary battery cathode material.

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PUM

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Abstract

The invention discloses a water-based Zn-Mn secondary battery positive electrode material and a preparation method thereof. The preparation method comprises the following steps: step 1, dissolving trimellitic acid, manganese salt and aluminum salt in an organic solvent, and heating the Reaction in the medium to obtain a white solid powder; step 2, calcining the white solid powder in a muffle furnace and cooling to obtain a dark brown solid powder, which is the positive electrode material of the water-based Zn-Mn secondary battery. The positive electrode material of the water system Zn-Mn secondary battery of the present invention is obtained by calcining the manganese-trimesic acid metal-organic bone material doped with aluminum as a precursor. The preparation method is simple and easy, and the prepared battery has a large specific capacity. The cycle stability is excellent. When the current density is 300mA / g, the discharge specific capacity can reach 157.8mAh / g after 250 cycles.

Description

technical field [0001] The invention relates to the field of positive electrode materials for batteries, in particular to an aqueous Zn-Mn secondary battery positive electrode material and a preparation method thereof. Background technique [0002] With the rapid development of the global economy, the continuous consumption of petroleum resources and the increasingly serious environmental pollution, the development of renewable clean energy such as solar energy, wind energy, and water energy is becoming more and more important. During the use of these clean energy sources, high-power and high-energy secondary batteries are required as large-scale energy storage tools to efficiently store and distribute energy. Currently, lithium-ion batteries are considered the most promising for mobile devices and are widely used in smartphones, laptops and tablets. However, the high cost and flammability of organic electrolytes for lithium-ion batteries, and the limited and uneven distrib...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/48H01M4/505H01M4/60
CPCY02E60/10
Inventor 苟蕾赵少攀赵明娟牟克亮薛栋樊小勇李东林
Owner CHANGAN UNIV
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