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Flexible lithium ion battery

A lithium-ion battery, flexible technology, applied in the direction of battery electrodes, secondary batteries, battery components, etc.

Pending Publication Date: 2022-06-10
陈图强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the excellent flexibility and mechanical strength of the encapsulation material, such a structure can certainly improve the delamination resistance of the device, but the device may still delaminate, because this is still a multi-layer structure, and some areas between the two layers are still are bonded together by a mechanically weak polymer electrolyte

Method used

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Examples

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Embodiment 1

[0028] The present invention will be further described below in conjunction with the examples, but it should not be understood that the scope of the subject of the present invention is limited to the following examples. Without departing from the above-mentioned technical ideas of the present invention, various replacements and changes made according to common technical knowledge and conventional means in this field shall be included in the protection scope of the present invention.

[0029] Embodiment 1: the preparation of the mesh flexible lithium-ion battery without initial anode (first electrode) and flexible shaft 20A, comprises the following steps:

[0030] 1): Put a metal nickel mesh (3×6cm 2 , net diameter 5 microns, wire diameter 2 microns) soaked in sodium hydroxide solution (1.0M) at 60°C for 16 hours, then repeatedly soaked and ultrasonicated in 50% isopropanol solution for 16 hours, and finally heated at 120°C 2): clamp the two ends of the dried rectangular Ni me...

Embodiment 2

[0037] The encapsulation of the metal mesh battery: 10): slowly immerse the metal mesh battery in step 9) in the DMAc (N,N-dimethylacetamide) solution of 18wt% polyimide for 5min. The solution was removed; then heated in dry air at 100°C and 300°C for 30 minutes respectively; the thickness of the encapsulating polymer film was ~2 microns, and the pores (20B) that may have been left before encapsulation were completely filled. The well-encapsulated mesh lithium-ion battery exhibits excellent flexibility and can be used repeatedly after the first charge.

[0038] Embodiment 2: the preparation of mesh flexible lithium-ion battery without initial anode (first electrode), comprises the following steps:

[0039] 1): Put a metal nickel mesh (3×6cm 2 , net diameter 5 microns, wire diameter 2 microns) soaked in sodium hydroxide solution (1.0M) at 60°C for 16 hours, then repeatedly soaked and ultrasonicated in 50% isopropanol solution for 16 hours, and finally heated at 120°C Dry in t...

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Abstract

The invention discloses a flexible lithium ion battery which structurally comprises a metal net current collector, and an electrode material layer, a solid electrolyte layer, a second electrode material layer, a second metal current collector layer and a flexible packaging material layer which are sequentially deposited on a metal net in a certain mode. Particular patterns of the composite structure and related material coatings of the lithium ion battery device on the metal mesh impart flexibility and foldability to the energy storage device.

Description

technical field [0002] The invention relates to the field of lithium ion batteries. More specifically, the present invention relates to flexible lithium-ion batteries required for flexible electronic devices. Background technique [0003] The development of flexible electronics requires flexible energy storage devices that match their flexibility and bendability. Lithium-ion batteries are preferred for the development of flexible energy storage devices due to their high energy density, layered cell structure, and possibly minimal liquid content. [0004] A feasible approach to fabricate flexible energy storage devices is to develop corresponding flexible electrodes. A lot of work has been done in this area, including the development of flexible electrodes and polymer electrolytes for lithium-ion batteries or supercapacitors. The general idea of ​​developing flexible electrodes is to embed or composite active electrode materials with suitable nanostructures into flexible s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0525
CPCH01M10/0525Y02P70/50H01M50/136H01M50/102H01M50/121H01M50/133H01M10/052H01M10/0562H01M10/0565H01M2300/0071H01M2300/0082H01M4/661H01M4/74H01M2004/021H01M4/13H01M50/112H01M4/366H01M4/505H01M4/525H01M2004/028
Inventor 陈图强
Owner 陈图强
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