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Metal ion battery and preparation method thereof

A metal ion and battery technology, applied in secondary batteries, circuits, electrical components, etc., can solve the problems of low charge transmission efficiency of positive and negative electrodes, and achieve the effects of improving electrochemical performance, reducing inert components, and low resistance

Active Publication Date: 2019-06-28
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the problems of low charge transfer efficiency of the positive and negative electrodes of the linear battery in the prior art, thereby providing a fibrous metal ion battery and its preparation method

Method used

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  • Metal ion battery and preparation method thereof
  • Metal ion battery and preparation method thereof

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Embodiment 1

[0039] This embodiment provides a zinc ion battery and a preparation method thereof, specifically comprising:

[0040] Preparation of carbon nanotubes: The spinnable carbon nanotube array grown by vapor deposition (CVD) is fixed on a rotatable sample stage, and a carbon nanotube film with a width of 12mm is continuously pulled out from the edge of the array, and twisted to form fibers. Then it is collected on a rotating roller, and the carbon nanotubes are spun into continuous long fibers; wherein, the twist angle of the fiber collection is 20°, and the diameter of the long carbon nanotube fibers is 100 μm, such as Figure 5 shown;

[0041] Preparation of conductive polymer / carbon nanotube composite fibers: place carbon nanotube long fibers in sulfuric acid aqueous solution containing aniline monomer, and add potassium persulfate at 0°C to chemically oxidize and polymerize aniline on the fiber surface to obtain conductive polymer matter / carbon nanotube composite long-fiber elec...

Embodiment 2

[0046] This embodiment provides a zinc ion battery and a preparation method thereof. The difference from Embodiment 1 lies in the material of the substrate. The substrate of this embodiment uses polydimethylsiloxane.

Embodiment 3

[0048] This embodiment provides a zinc ion battery and a preparation method thereof. The difference from Embodiment 1 lies in the material of the substrate, which is polyurethane in this embodiment.

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Abstract

The invention belongs to the technical field of battery preparation and in particular relates to a metal ion battery and a preparation method thereof. The battery comprises a substrate and positive and negative fibers wound around the substrate, wherein the positive fiber and the negative fiber are intertwined; the positive fiber is a conductive polymer / carbon nanotube composite fiber; the negative fiber is a zinc / carbon nanotube composite fiber; the positive fiber and the negative fiber are obtained by a step of applying a gel electrolyte. The battery uses the structural design in which the positive fiber and the negative fiber are first spirally wound and then wound around the substrate, which can improve the electrochemical performance of the battery and the charge transfer efficiency of the positive and negative electrodes, so that the battery has low resistance and good rate performance. The positive electrode and the negative electrode of the battery are both self-supported electrodes, and do not need a conductive agent and a binder, which greatly reduces the inert components in the battery and contributes to an increase in the energy density of the battery.

Description

technical field [0001] The invention belongs to the technical field of battery preparation, and in particular relates to a metal ion battery and a preparation method thereof. Background technique [0002] The development of fiber-like weavable devices compatible with traditional textile processes is an important way to realize the flexibility of wearable devices. The fiber-like structure can achieve three-dimensional flexibility, and can also weave different fiber functional devices into wearable fabrics with good performance through low-cost textile technology like traditional chemical fibers and cotton threads, so as to realize the integration of various devices in An ideal design target on a piece of smart clothing. [0003] In the Chinese patent literature, CN 103904357A discloses a stretchable linear lithium-ion battery and its preparation method. The method prepares carbon nanotube / lithium manganate composite fiber as the positive electrode respectively, and then prep...

Claims

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Application Information

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IPC IPC(8): H01M10/36H01M10/38
CPCY02E60/10Y02P70/50
Inventor 王凯马衍伟
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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