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Flexible water system zinc ion battery

A zinc-ion battery and water system technology, applied in the field of flexible energy storage, can solve the problems of complex manufacturing process, poor bending performance, poor cycle performance, etc., to avoid potential safety hazards, reduce contact resistance and battery internal resistance, and achieve good packaging effect. Effect

Active Publication Date: 2019-08-30
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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as 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 ultrason...

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 system zinc ion battery. The flexible water system zinc ion battery comprises a cathode layer, an anode layer, a current collection layer, a diaphragm and an aqueous electrolyte. The current collection layer comprises a breathable layer and a substrate layer, the substrate layer is provided with at least one opening holes. The perforated structure of the breathable layer and the substrate layer solves the problems of gas generation and electrolyte drying in the battery circulation process, so that the internal and external gaseous water of the battery reaches the states of circulation exchange and dynamic balance, and the circulation performance of the battery is greatly improved; and the assembled flexible water system zinc ion battery has the advantages of light weight, thin thickness, low cost, environmental friendliness, high safety, good rate capability, high power density and the like, and the excellent bending performance and flexibilityof the flexible water system zinc ion battery can meet the bending requirements of different angles, so that the flexible water system zinc ion battery is suitable for large-scale application and industrial production in the field of wearable electronic equipment.

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 Applications(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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