Zinc ion battery based on manganese dioxide-based positive electrode and polyimide-based negative electrode and preparation method of zinc ion battery

A zinc-ion battery, manganese dioxide-based technology, applied in secondary batteries, battery electrodes, circuits, etc., can solve problems such as low voltage window, growth of zinc dendrites, puncture of diaphragm, etc., to achieve safety and low cost, inhibit Dissolving, environmentally friendly effect

Pending Publication Date: 2022-04-15
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the zinc metal negative electrode has the above excellent advantages, there is still the problem that zinc dendrites grow and pierce the separator, making the battery invalid.
In addition, for zinc-ion batteries that use manganese-based electrode materials as positive electrodes and zinc metal as negative electrodes, there is still a problem that the voltage window is not high, and a smaller voltage window will also bring a greater negative impact on the energy density of zinc-ion batteries. influences

Method used

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  • Zinc ion battery based on manganese dioxide-based positive electrode and polyimide-based negative electrode and preparation method of zinc ion battery
  • Zinc ion battery based on manganese dioxide-based positive electrode and polyimide-based negative electrode and preparation method of zinc ion battery
  • Zinc ion battery based on manganese dioxide-based positive electrode and polyimide-based negative electrode and preparation method of zinc ion battery

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Effect test

Embodiment 1

[0033] A method for preparing a zinc ion battery based on a manganese dioxide-based positive electrode and a polyimide-based negative electrode is provided, comprising the following steps:

[0034] Mix manganese dioxide, carbon black and polyvinylidene fluoride uniformly in a mass ratio of 8:1:1, and attach them to the stainless steel mesh collector fluid to form the positive electrode. Mix polyimide, carbon black and polyvinylidene fluoride evenly in a mass ratio of 6:3:1, and attach them to the stainless steel net collector fluid to form the negative electrode. With filter paper as the membrane, 2M ZnSO 4 The aqueous solution is an electrolyte, and a zinc ion battery is assembled.

Embodiment 2

[0036] A method for preparing a zinc ion battery based on a manganese dioxide-based positive electrode and a polyimide-based negative electrode is provided, comprising the following steps:

[0037] Mix manganese dioxide, carbon black and polyvinylidene fluoride evenly in a mass ratio of 8:1:1, and attach them to the carbon cloth current collector to form the positive electrode. Mix polyimide, carbon black and polyvinylidene fluoride evenly in a mass ratio of 6:3:1, and attach them to the carbon cloth current collector to form the negative electrode. With filter paper as the membrane, 2M ZnSO 4 / 1M MnSO 4 The mixed aqueous solution is used as the electrolyte, and the zinc-ion battery is assembled.

Embodiment 3

[0039] A method for preparing a zinc ion battery based on a manganese dioxide-based positive electrode and a polyimide-based negative electrode is provided, comprising the following steps:

[0040] Mix manganese dioxide, carbon black and polyvinylidene fluoride uniformly in a mass ratio of 7:2:1, and attach them to the stainless steel net collector fluid to form the positive electrode. Mix polyimide, carbon black and polyvinylidene fluoride evenly in a mass ratio of 5:4:1, and attach them to the stainless steel net collector fluid to form the negative electrode. With filter paper as the membrane, 2M ZnSO 4 / 1M MnSO 4 The mixed aqueous solution is used as the electrolyte, and the zinc-ion battery is assembled.

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Abstract

The invention discloses a zinc ion battery based on a manganese dioxide-based positive electrode and a polyimide-based negative electrode and a preparation method of the zinc ion battery. The zinc ion battery comprises a positive electrode, a negative electrode, an electrolyte and a diaphragm, the positive electrode adopts a manganese dioxide electrode material, the negative electrode adopts a polyimide organic electrode material, and the electrolyte is an aqueous solution containing zinc ions; wherein the polyimide is prepared by taking 3, 4, 9, 10-perylenetetracarboxylic dianhydride and diaminodiphenyl ether as reaction monomers. The manganese dioxide is used as the positive electrode material, and the polyimide is used as the negative electrode material, so that the voltage window of the water-based zinc ion battery is improved; the obtained zinc ion battery has relatively high voltage window (V = 1.6 V) and energy density; meanwhile, crystal dendrite growth does not exist in the negative electrode of the zinc ion battery, and ideal charge-discharge cycle stability can be obtained; the obtained zinc ion battery has the advantages of high capacity, environmental friendliness, safety, low cost and the like, and is beneficial to industrial popularization and application.

Description

technical field [0001] The invention belongs to the technical field of zinc ion batteries, and in particular relates to a zinc ion battery based on a manganese dioxide-based positive electrode and a polyimide-based negative electrode and a preparation method thereof. Background technique [0002] As an efficient energy conversion and storage device, chemical power sources are widely used in mobile communication devices, daily necessities, aerospace, machinery and so on. At present, lithium-ion batteries are one of the most widely used power storage devices, but they have many inherent defects, such as limited reserves of lithium resources, and toxic, flammable, and explosive electrolytes. Due to its excellent safety and ideal electrochemical performance, aqueous zinc-ion secondary batteries are considered to be an important supplement and substitute for lithium-ion batteries in the future, and have become a current research hotspot. [0003] Generally speaking, zinc ion sec...

Claims

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Application Information

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IPC IPC(8): H01M10/36H01M4/50H01M4/60
Inventor 黄华波白慧马茹萍李亮刘玉兰
Owner WUHAN INSTITUTE OF TECHNOLOGY
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