Fiber-like-structured lithium ion battery and preparation method

A lithium-ion battery, fibrous technology, applied in the fields of electrochemistry and automobile lightweight, can solve the problems of commercialization difficulties, and achieve the effect of less steps, simple operation and fast charging rate

Active Publication Date: 2018-01-16
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the preparation of fiber batteries is mostly for scientific research purposes, and it is difficult to commercialize

Method used

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  • Fiber-like-structured lithium ion battery and preparation method
  • Fiber-like-structured lithium ion battery and preparation method
  • Fiber-like-structured lithium ion battery and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as Figure 1-3 As shown, the lithium-ion battery with a fibrous structure of the present invention includes a positive electrode current collector copper wire 1 , a positive electrode active material mixture 2 , a separator PP film 3 , a negative electrode carbon fiber 4 and a solid electrolyte 5 . The positive electrode current collector copper wire 1 is wrapped with a layer of positive electrode active material mixture 2, the outside of the positive electrode active material mixture 2 is wrapped with a layer of PP separator 3, the outside of the PP separator 3 is wrapped with a circle of negative electrode fibers 4, and the solid electrolyte 5 combines all the components, That is, the positive current collector copper wire 1, the positive active material mixture 2, the PP separator 3, and the negative fiber 4 are wrapped, and play the role of bonding all components.

[0031] The shape of the lithium-ion battery having a fibrous structure is a long fiber, with an ...

Embodiment 2

[0039] Such as Figure 1-3 As shown, the lithium-ion battery with a fibrous structure of the present invention includes a positive electrode current collector nickel wire 1 , a positive electrode active material mixture 2 , a separator PP / PE / PP composite film 3 , negative electrode carbon fiber 4 and a solid electrolyte 5 . The positive electrode current collector nickel wire 1 is wrapped with a layer of positive electrode active material mixture 2, the outside of the positive electrode active material mixture 2 is wrapped with a layer of PP / PE / PP composite separator 3, and the outside of PP / PE / PP composite separator 3 is wrapped with a circle of negative electrode The fiber 4 and the solid electrolyte 5 wrap all the components, that is, the positive electrode current collector nickel wire 1, the positive electrode active material mixture 2, the PP / PE / PP composite separator 3, and the negative electrode fiber 4, and play the role of bonding all the components.

[0040] The sha...

Embodiment 3

[0048] Such as Figure 1-3 As shown, the lithium-ion battery with a fibrous structure of the present invention includes a positive electrode current collector copper wire 1 , a positive electrode active material mixture 2 , a separator PP film 3 , a negative electrode carbon fiber 4 and a solid electrolyte 5 . The positive electrode current collector copper wire 1 is wrapped with a layer of positive electrode active material mixture 2, the outside of the positive electrode active material mixture 2 is wrapped with a layer of PP separator 3, the outside of the PP separator 3 is wrapped with a circle of negative electrode fibers 4, and the solid electrolyte 5 combines all the components, That is, the positive current collector copper wire 1, the positive active material mixture 2, the PP separator 3, and the negative fiber 4 are wrapped, and play the role of bonding all components.

[0049] The shape of the lithium-ion battery having a fibrous structure is a long fiber, with an ...

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Abstract

The invention discloses a fiber-like-structured lithium ion battery and a preparation method. The fiber-like-structured lithium ion battery is a complete lithium ion battery and has all performance ofthe battery, and also can be used as a reinforcing body of a composite material so as to obtain a force-bearing structured board in a composite manner. The dimension of fiber battery is in a millimeter level, so that the battery is different from the common lithium ion battery; and the battery with the structure has relatively high specific energy density and charging rate as well as relatively high mechanical strength. The preparation method of the fiber-structured battery comprises the steps of 1) selecting positive electrode current collector metal fibers; 2) coating the surface with a positive electrode active material; 3) packaging by a diaphragm; 4) winding with negative electrode fibers (carbon fibers); and 5) performing wetting of a dual-continuous-phase electrolyte and curing.

Description

technical field [0001] The invention relates to a lithium-ion battery with a fibrous structure and a preparation method, which belongs to the field of electrochemistry and relates to the field of lightweight automobiles. Background technique [0002] Lithium-ion batteries are more and more widely used in various fields such as aerospace, automobiles, and mobile phones because of their high electrochemical performance and environmental protection characteristics. For the aerospace or automotive fields, the development of lightweight will greatly save energy, reduce emissions, and contribute to environmental protection. Therefore, the concept of structural battery has emerged, which is to integrate the load-bearing structure and energy storage device into an integrated multifunctional system. Traditional structural batteries are mainly embedded combined structural batteries and laminated structural batteries. The combined structural battery is to embed the finished commercia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0525H01M10/058
CPCY02E60/10Y02P70/50
Inventor 许骏高翔刘冰河王璐冰
Owner BEIHANG UNIV
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