A kind of tin-based alloy flexible film electrode and preparation method thereof

A tin-based alloy, flexible film technology, applied in the direction of electrodes, battery electrodes, electrode shape/type, etc., can solve the problems of poor battery cycle performance and battery stability, and achieve the effect of improving cycle stability, good conductivity and uniform composition

Active Publication Date: 2017-06-20
HENAN NORMAL UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a tin-based alloy flexible film electrode to solve the problems of poor cycle performance and battery stability of existing tin-based electrodes.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The tin-based alloy flexible film electrode of this embodiment includes a substrate, the substrate is a conductive polymer film, and both sides of the substrate have tin-based alloy layers.

[0037] The thickness of the tin-based alloy flexible film electrode is 25 μm. The conductive polymer film is a mixture of polyacetylene (PA) and polyaniline (PAN) as a raw material, which is pressed into a film under a pressure of 150 MPa, and the obtained polyacetylene / polyaniline (PA / PAN) conductive film, the conductive film The thickness is 15 μm. In the conductive film, the molar ratio of polyacetylene to polyaniline is 1:1.

[0038] The tin-based alloy layer is formed by electroplating the substrate as the cathode, and electrodepositing copper-tin alloy on the surface of the conductive polymer film. In the used electroplating solution of described electroplating, electroplating main salt is copper pyrophosphate and stannous pyrophosphate; The concentration of described coppe...

Embodiment 2

[0046] The tin-based alloy flexible film electrode of this embodiment includes a substrate, the substrate is a conductive polymer film, and both sides of the substrate have tin-based alloy layers.

[0047] The thickness of the tin-based alloy flexible film electrode is 200 μm. The conductive polymer film is based on pyrrole (PY) as a polymerization monomer, under electrochemical polymerization conditions, with a conductive glass plate as the cathode and anode, doped with macromolecular p-toluenesulfonate (PTS-), and polymerized to obtain polypyrrole / p-toluenesulfonate (PPY / PTS) conductive film, the thickness of the conductive film is 50 μm. In the PPY / PTS conductive film, the doping amount of p-toluenesulfonate is 10% (mole percentage).

[0048] The tin-based alloy layer is formed by electroplating the substrate as the cathode, and electrodepositing copper-tin alloy on the surface of the conductive polymer film. In the used electroplating solution of described electroplatin...

Embodiment 3

[0056] The tin-based alloy flexible film electrode of this embodiment includes a substrate, the substrate is a conductive polymer film, and both sides of the substrate have tin-based alloy layers.

[0057] The thickness of the tin-based alloy flexible film electrode is 125 μm. The conductive polymer film is based on pyrrole (PY) as a polymerization monomer, and ferric chloride (FeCl 3 ) is an oxidizing agent, and the PPY material doped with chloride ions (Cl-) is obtained by chemical oxidation polymerization; the PPY powder doped with chloride ions is taken, and then pressed into a film at 100MPa, and the obtained PPY / Cl conductive film, the conductive film The thickness is 50 μm. In the conductive film, the doping amount of chloride ions is 1% (mole percentage).

[0058] The tin-based alloy layer is formed by electroplating the substrate as the cathode, and electrodepositing copper-tin alloy on the surface of the conductive polymer film. In the used electroplating solution...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention discloses a tin-based alloy flexible thin-film electrode and a preparation method thereof. The electrode comprises a substrate, the substrate is a conductive polymer film, and one or both sides of the substrate have a tin-based alloy layer. The tin-based alloy flexible film electrode of the present invention has a conductive polymer film as the substrate, and has good scalability, corrosion resistance, flexibility and conductivity, and the obtained tin-based alloy flexible film electrode is thinner, and while having conductivity, With good elasticity, flexibility, ductility and corrosion resistance, it is suitable for the preparation of flexible batteries; tin-based alloys have high energy density, low discharge platform and good conductivity, so that the electrode has a high electrochemical Performance and good cycle performance; in the process of charge and discharge, with the volume change of tin, the matrix will have a certain expansion and contraction change to prevent the shedding and pulverization of tin; the tin-based alloy structure has a good slowdown on the volume change of tin and limiting effect, thereby improving the cycle stability of the battery.

Description

technical field [0001] The invention belongs to the technical field of lithium ion batteries, and in particular relates to a tin-based alloy flexible thin-film electrode, and also relates to a preparation method of the tin-based alloy flexible thin-film electrode. Background technique [0002] The demand for energy in modern society has greatly promoted the development of energy storage technology. Lithium-ion batteries have already occupied the market of portable appliances. At the same time, people are eager to find batteries with higher energy, longer life and higher safety. Among them, in addition to the above requirements, some special fields also put forward higher requirements for the flexibility of battery electrodes, so higher requirements are put forward for the electrode materials and electrode preparation of lithium-ion batteries. [0003] As lithium-ion anode materials, tin-based materials have attracted extensive attention due to their high energy density, low ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/38C25B11/02C25B11/04
CPCH01M4/134H01M4/1395H01M4/387Y02E60/10
Inventor 杨书廷刘玉霞李向南乔芸曹朝霞王秋娴尹艳红
Owner HENAN NORMAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap