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Zinc-manganese battery containing modified nano zinc powder and preparation method thereof

A nano-zinc powder, zinc-manganese battery technology, applied in battery electrodes, active material electrodes, aqueous electrolyte batteries, etc., can solve the problems of poor temperature resistance, limited capacity of zinc ion batteries, etc., to achieve wide temperature resistance, strong practicability, Coulomb efficient effect

Inactive Publication Date: 2021-05-25
GUANGZHOU ZHUOYUE ELECTRIC ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] By providing a zinc-manganese battery containing modified nano-zinc powder, the present invention solves the defects of limited actual capacity and poor temperature resistance of zinc-ion batteries in the prior art, and can obtain long cycle life and high energy density by adopting a simple process. Zinc-manganese battery with wide temperature resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The first aspect of this embodiment provides a zinc-manganese battery containing modified nano-zinc powder, including a casing, a positive electrode ring, a negative electrode zinc paste, a diaphragm, and an electrolyte; the raw materials of the negative electrode zinc paste include, by weight ratio , 53.5% modified nano-zinc powder, 5% binder, 39% electrolyte two and 2.5% additives.

[0057] The modified nano-zinc powder is carbon quantum dot-coated nano-zinc powder.

[0058] The carbon quantum dots are graphene quantum dots.

[0059] The particle size of the nano-zinc powder is 400 mesh, purchased from Hunan Xinweiling Metal New Material Technology Co., Ltd.

[0060] The concrete steps of described graphene quantum dot coating nano-zinc powder include:

[0061] Add 3g of graphene quantum dot powder into 100mL of ethanol aqueous solution, ultrasonically disperse for 30min, and stir for 20min; ultrasonically oscillate, and shear with a mechanical shear for 4h to obtai...

Embodiment 2

[0072] The first aspect of this embodiment provides a zinc-manganese battery containing modified nano-zinc powder, including a casing, a positive electrode ring, a negative electrode zinc paste, a diaphragm, and an electrolyte; the raw materials of the negative electrode zinc paste include, by weight ratio , 50% modified nano zinc powder, 4% binder, 43% electrolyte two and 3% additives.

[0073] The modified nano-zinc powder is carbon quantum dot-coated nano-zinc powder.

[0074] The carbon quantum dots are graphene quantum dots.

[0075] The particle size of the nano-zinc powder is 400 mesh, purchased from Hunan Xinweiling Metal New Material Technology Co., Ltd.

[0076] The concrete steps of described graphene quantum dot coating nano-zinc powder include:

[0077] Add 3g of graphene quantum dot powder into 100mL of ethanol aqueous solution, ultrasonically disperse for 30min, and stir for 20min; ultrasonically oscillate, and shear with a mechanical shear for 4h to obtain a ...

Embodiment 3

[0088] The first aspect of this embodiment provides a zinc-manganese battery containing modified nano-zinc powder, including a casing, a positive electrode ring, a negative electrode zinc paste, a diaphragm, and an electrolyte; the raw materials of the negative electrode zinc paste include, by weight ratio , 63% modified nano zinc powder, 3% binder, 32% electrolyte two and 2% additives.

[0089] The modified nano-zinc powder is carbon quantum dot-coated nano-zinc powder.

[0090] The carbon quantum dots are graphene quantum dots.

[0091] The particle size of the nano-zinc powder is 400 mesh, purchased from Hunan Xinweiling Metal New Material Technology Co., Ltd.

[0092] The concrete steps of described graphene quantum dot coating nano-zinc powder include:

[0093] Add 3g of graphene quantum dot powder into 100mL of ethanol aqueous solution, ultrasonically disperse for 30min, and stir for 20min; ultrasonically oscillate, and shear with a mechanical shear for 4h to obtain a ...

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Abstract

The invention relates to the technical field of zinc-manganese batteries, in particular to a zinc-manganese battery containing modified nano zinc powder and a preparation method thereof. The zinc-manganese battery comprises a shell, a positive electrode ring, negative electrode zinc paste, a diaphragm and electrolyte I; and the negative electrode zinc paste comprises the following raw materials in percentage by weight: 46-65% of modified nano zinc powder, 3-7% of a binder, 27-46% of an electrolyte II and 1-4% of an additive. The zinc-manganese battery containing the modified nano zinc powder prepared by the invention adopts a carbon quantum dot anchoring and nano zinc powder coating technology, and has the following advantages: (1) the actual capacity and coulombic efficiency of the battery are high, and the practicability is strong; (2) the cycle life of the battery is more than 1000 times, and the service life is long; (3) the battery is wide in temperature resistance and can normally work under the condition of -30 DEG C-100 DEG C; and (4) the battery is not added with any lead-containing and mercury-containing material, and is safe and environment-friendly.

Description

technical field [0001] The invention relates to the technical field of zinc-manganese batteries, in particular to a zinc-manganese battery containing modified nano-zinc powder and a preparation method thereof. Background technique [0002] Battery (Battery) refers to a cup, tank or other container or part of a composite container that contains an electrolyte solution and a metal electrode to generate current, and is a device that converts chemical energy into electrical energy. It has positive pole and negative pole. As technology advances, batteries generally refer to small devices that can generate electricity. An ideal battery device needs to have the characteristics of large capacity, strong reversibility, fast charge and fast discharge, low cost, and environmental friendliness. Traditional alkaline-manganese batteries, lithium-ion batteries, lead-acid batteries, nickel-cadmium batteries and various capacitors have been widely studied and applied in daily life. As an ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/62H01M4/42H01M6/04
CPCH01M4/42H01M4/62H01M6/04H01M2004/027H01M2004/021
Inventor 李思睿李政文王瀚民黎少伟
Owner GUANGZHOU ZHUOYUE ELECTRIC ENERGY TECH CO LTD
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