A flexible aqueous zinc-ion battery

A zinc-ion battery and water-based technology, applied in the field of flexible energy storage, can solve problems such as complex manufacturing process, poor cycle performance, and low energy density, and achieve the goals of avoiding potential safety hazards, good packaging effect, and reducing contact resistance and battery internal resistance Effect

Active Publication Date: 2022-02-11
SHENZHEN CITY THROUGH SCI & TECH OF NEW ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current zinc-ion batteries have defects such as low energy density, poor cycle performance, poor bending performance, complex manufacturing process and high cost, which limit their application in the field of flexible electronic devices.

Method used

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  • A flexible aqueous zinc-ion battery
  • A flexible aqueous zinc-ion battery
  • A flexible aqueous zinc-ion battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] like figure 1 As shown, a flexible water-based zinc-ion battery includes a positive electrode layer 1, a negative electrode layer 2, a current-collecting layer 3, a separator 4 and an aqueous electrolyte 5, and the current-collecting layer 3 includes a gas-permeable layer 31, a matrix layer 32 and a conductive layer 33 , there is an opening 34 on the base layer.

[0034]First, the high-density polyethylene film is used as the air-permeable layer, and the polyethylene terephthalate (PET) film with a 1mm opening is used as the base layer, and one side of the base layer is combined with the air-permeable layer, and then the graphene The slurry is coated on the other side of the base layer to form a conductive layer, thereby forming a current-collecting layer structure of a breathable layer-base layer-conductive layer, and a polyethylene terephthalate (PET) film base layer and a breathable layer or a conductive layer Before lamination, the surface is cleaned by ultrasonic ...

Embodiment 2

[0039] A flexible water-based zinc-ion battery includes a positive electrode layer, a negative electrode layer, a current-collecting layer, a separator, and an aqueous electrolyte. First, the high-density polyethylene film is used as the air-permeable layer, and the polyethylene naphthalate (PEN) film with three 0.5mm openings is used as the base layer, and the carbon nanotube slurry is coated on one side of the base layer to form conductive layer, and then compound the air-permeable layer with the other side of the matrix layer to form a current-collecting layer structure of air-permeable layer-matrix layer-conductive layer, polyethylene naphthalate (PEN) film base layer and air-permeable layer or The surface of the conductive layer is cleaned by a plasma cleaning machine before compounding.

[0040] Then, use niobium-doped manganese dioxide as the positive electrode active material, mix the binder, the conductive agent Super-P and CNT to obtain the positive electrode slurry;...

Embodiment 3

[0046] A flexible water-based zinc-ion battery includes a positive electrode layer, a negative electrode layer, a current-collecting layer, a separator, and an aqueous electrolyte. First, the meta-aramid fiber film is used as the air-permeable layer, and the polyvinyl alcohol (PVA) film with five 0.12mm openings is used as the base layer, and one side of the base layer is combined with the air-permeable layer, and then the graphene slurry is coated. Cover the other side of the base layer to form a conductive layer, and then form a gas-permeable layer-base layer-conductive layer structure of the current-collecting layer. The polyvinyl alcohol (PVA) film base layer is cleaned by an ultrasonic cleaning machine before being combined with the gas-permeable layer or conductive layer. Its surface is cleaned.

[0047] Then, use carbon-coated manganese monoxide as the positive electrode active material, mix the binder, conductive agent Super-P and KS-6 to obtain the positive electrode ...

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Abstract

The invention discloses a flexible water-based zinc-ion battery, which includes a positive electrode layer, a negative electrode layer, a current-collecting layer, a diaphragm and an aqueous electrolyte. The current-collecting layer includes a gas-permeable layer and a base layer, and the base layer has at least one opening. The open-pore structure of the air-permeable layer and the base layer solves the problem of gas production and electrolyte drying during the battery cycle, making the gaseous water inside and outside the battery reach a state of cyclic exchange and dynamic equilibrium, which greatly improves the cycle performance of the battery. Moreover, the assembled flexible aqueous zinc-ion battery has the advantages of light weight, thin thickness, low cost, green environmental protection, high safety, good rate performance and high power density, and its excellent bending performance and flexibility can also meet bending at different angles. It is suitable for large-scale application and industrial production in the field of wearable electronic devices.

Description

technical field [0001] The invention relates to the technical field of flexible energy storage, in particular to a flexible water-based zinc-ion battery. Background technique [0002] With the rapid development of electronic technology, more and more electronic devices are developing in the direction of thinner, lighter, shaped and flexible. In order to meet the needs of flexible electronic devices, it is of great significance to research on matching high-performance, bending-resistant, safe and reliable flexible batteries. [0003] Lithium-ion battery is currently a system with relatively mature energy density and manufacturing technology, but there are still many problems in applying it to flexible batteries. In the process of shuttle and deintercalation of lithium ions between the positive and negative electrodes, "lithium dendrites" are easily formed on the surface of the negative electrode, piercing the separator and causing an internal short circuit, coupled with the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/36H01M10/38
CPCH01M10/36H01M10/38Y02E60/10Y02P70/50
Inventor 魏春光王静霞梁燕程乐志
Owner SHENZHEN CITY THROUGH SCI & TECH OF NEW ENERGY CO LTD
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