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Zinc-based battery anode material containing Bi2O3 with self-assembled structure and preparation method

A zinc-based battery and anode material technology, which is applied to battery electrodes, secondary batteries, structural parts, etc., can effectively solve the problem of dendrites and cannot meet the requirements of use, and achieve the effect of solving the problem of zinc dendrites

Inactive Publication Date: 2018-09-14
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The current additive method can only improve the energy storage and conversion mode of the battery to a certain extent, thereby alleviating the anode dendrite problem, but it cannot fundamentally effectively solve the dendrite problem, so these additive methods obviously cannot meet the actual needs. Use requirements, zinc-based anodes still need further improvement and optimization

Method used

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  • Zinc-based battery anode material containing Bi2O3 with self-assembled structure and preparation method
  • Zinc-based battery anode material containing Bi2O3 with self-assembled structure and preparation method
  • Zinc-based battery anode material containing Bi2O3 with self-assembled structure and preparation method

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example 1

[0031]The inner lining of the reactor was washed with nitric acid, ethanol and deionized water in sequence, and dried in an oven. Preparation reaction solution, reaction solution is 0.072mol / L bismuth nitrate solution, is made up of bismuth nitrate pentahydrate, acetone and ethylene glycol of analytical grade, during preparation, in beaker, add the acetone of 36mL and the ethylene glycol of 18mL, Add the weighed bismuth nitrate pentahydrate into the mixed solution, and stir at a medium speed with a magnetic rotor to obtain a bismuth nitrate solution. The uniformly mixed reaction solution was transferred to a reaction kettle dedicated to the hydrothermal method, the reaction temperature was set at 160° C., and the reaction time was 5 h. After the reaction was complete, it was cooled to room temperature. Then the material obtained from the reaction was washed several times with ethanol and deionized water, and then freeze-dried to obtain Bi 2 o 3 Nanosheet powder. The dried ...

example 2

[0033] The inner lining of the reactor was washed with nitric acid, ethanol and deionized water in sequence, and dried in an oven. Prepare reaction solution, reaction solution is 0.072mol / L bismuth nitrate solution, is made up of bismuth nitrate pentahydrate, acetone and ethylene glycol of analytical grade, when preparing, add the acetone of 36mL and the ethylene glycol of 18mL in the beaker, will Add the weighed bismuth nitrate pentahydrate into the mixed solution, and stir at a medium speed with a magnetic rotor to obtain a bismuth nitrate solution. The uniformly mixed reaction solution was transferred to a special reaction kettle for the hydrothermal method, the reaction temperature was set at 160° C., and the reaction time was 3 h. After the reaction was complete, it was cooled to room temperature. Then the material obtained from the reaction was washed several times with ethanol and deionized water, and then freeze-dried to obtain Bi 2 o 3 Nanosheet powder. The dried ...

example 3

[0035] The inner lining of the reactor was washed with nitric acid, ethanol and deionized water in sequence, and dried in an oven. Preparation reaction solution, reaction solution is 0.072mol / L bismuth nitrate solution, is made up of bismuth nitrate pentahydrate, acetone and ethylene glycol of analytical grade, during preparation, in beaker, add the acetone of 36mL and the ethylene glycol of 18mL, Add the weighed bismuth nitrate pentahydrate into the mixed solution, and stir at a medium speed with a magnetic rotor to obtain a bismuth nitrate solution. The uniformly mixed reaction solution was transferred to a reaction kettle dedicated to the hydrothermal method, the reaction temperature was set at 120° C., and the reaction time was 5 h. After the reaction was complete, it was cooled to room temperature. Then the material obtained from the reaction was washed several times with ethanol and deionized water, and then freeze-dried to obtain Bi 2 o 3 Nanosheet powder. The dried...

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Abstract

The invention relates to a zinc-based battery anode material containing Bi2O3 with a self-assembled structure and preparation method. The surface of a Cu foil is coated with a mixture of Bi2O3 powder,carbon black and polyvinylidene fluoride (PVDF); the Bi2O3 has the self-assembled structure; a phase structure is a tetragonal phase, an orthorhombic phase or a cubic crystal phase; the microscopic morphology is in a nanosheet layer shape, and the self-assembled structure forms a microsphere shape. The traditional metal anode is replaced with a zinc ion embedded anode material, and the energy storage mechanism of a zinc-based battery is changed ion storage energy from metal storage energy, so that the problem of zinc dendrites is fundamentally solved.

Description

technical field [0001] The invention belongs to the field of ion batteries and fuel cells, and relates to a self-assembled structure Bi 2 o 3 The zinc-based battery anode material and a preparation method thereof are an anode material for a zinc ion battery and a zinc ion-air battery and a preparation method thereof. Background technique [0002] Zinc-based batteries use metal zinc as the anode, which has the advantages of low cost, natural abundance, and high energy density (820mAh / g). It is a representative of the post-lithium-ion battery era and has received extensive attention. Currently, commonly used zinc-based battery anodes include dense zinc anodes and porous zinc anodes, among which porous zinc anodes are widely used due to their high specific surface area. However, the metal zinc anode tends to produce dendrites on its surface during the charging and discharging process of the battery, which greatly limits the long-term application of zinc-based batteries. [0...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/48H01M4/583H01M4/60H01M10/054H01M12/08
CPCH01M4/364H01M4/483H01M4/583H01M4/602H01M10/054H01M12/08Y02E60/10
Inventor 陈福义汤泉
Owner NORTHWESTERN POLYTECHNICAL UNIV
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