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Lithium-ion battery with WS2 serving as positive electrode and preparation method of lithium-ion battery

An aluminum ion battery and aluminum ion technology, which is applied in the manufacture of electrolyte batteries, battery electrodes, secondary batteries, etc., can solve the problems of unsatisfactory parameters such as battery specific capacity, etc., and achieve commercial promotion, stable and efficient cycle performance, Simple and effective production process

Inactive Publication Date: 2015-06-10
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are relatively few reports on aluminum-ion batteries, mainly because the relevant research is not very common, and the parameters such as battery specific capacity mentioned in the few reports are not very ideal, so they have not caused widespread commercial application. Pay attention to

Method used

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  • Lithium-ion battery with WS2 serving as positive electrode and preparation method of lithium-ion battery
  • Lithium-ion battery with WS2 serving as positive electrode and preparation method of lithium-ion battery

Examples

Experimental program
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Effect test

Embodiment 1

[0028] The positive active material is WS 2 , W 2 Mix with the amount of conductive platinum paste at 1:2wt%. At this time, the conductive platinum paste has both the functions of a conductive agent and a binder. The two are mixed evenly by spraying alcohol and mixing for a long time, and finally a gelatinous substance is obtained. The aforesaid colloidal substance was evenly coated on the molybdenum sheet of the positive electrode current collector, and placed in an oven at 120°C for about 24 hours to continue drying to obtain the positive electrode of the battery used in the present invention. Take a 0.25mm thick high-purity aluminum sheet, ultrasonically clean it in absolute ethanol for several hours, and then dry it to obtain the negative electrode of the battery. AlCl 3 It is mixed with 1-butyl-3-methylimidazolium chloride salt in a molar ratio of 1.3:1 to form an ionic liquid, which is used as the electrolyte for the present invention. The assembly of the whole batt...

Embodiment 2

[0030] The positive active material is WS 2 , mix it with conductive agent carbon nanotube (CNT) and binder polytetrafluoroethylene (PTFE) at 75:15:10wt%, and disperse in a certain amount of alcohol, and ultrasonically mix the three evenly for 60 minutes . The mixture was baked in a 60°C oven until it became gelatinous, and the gelatinous active material was evenly coated on the molybdenum sheet of the positive electrode current collector, and the obtained positive electrode was dried in an oven at 120°C for about 24 hours to obtain the positive electrode for the present invention. The negative electrode is a high-purity aluminum sheet that has been ultrasonically cleaned in alcohol for several hours, and the electrolyte is AlCl 3 The ionic liquid prepared by mixing with 1-propyl-3-methylimidazolium chloride in a molar ratio of 1:1. The housing of the cell is a 50ml glass reactor with a teflon sealing cap that can be inserted into the electrode hole. The entire battery is a...

Embodiment 3

[0032] The positive active material is WS 2, mix it with the conductive agent acetylene black and the binder polyvinylidene fluoride (PVDF) at 70:15:15wt%, add absolute ethanol to disperse, put it in an oven at 60°C after ultrasonication for 60 minutes, and dry it until it becomes gelatinous. shape, the gel-like active material is evenly coated on the nickel foam of the positive current collector, and it is dried continuously in an oven at 120°C for about 24 hours. The positive electrode sheet is pressed by a double-roller compactor, so that the positive electrode active material is in close contact with the positive electrode current collector, and thus the positive electrode of the battery used in the present invention is obtained. The negative electrode is a high-purity aluminum sheet that has been ultrasonically cleaned in alcohol for several hours, and the electrolyte is AlCl 3 It is an ionic liquid prepared by mixing 1-butyl-3-methylimidazolium hexafluorophosphate in a ...

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Abstract

The invention discloses a lithium-ion battery with WS2 serving as a positive electrode and a preparation method of the lithium-ion battery and belongs to the field of lithium-ion batteries and the preparation method of the lithium-ion batteries. The lithium-ion battery comprises a positive electrode, a negative electrode, a diaphragm material and an aluminum ion electrolyte, wherein the positive active material is WS2; a negative electrode is a high-purity aluminum sheet; the electrolyte is aluminum ion electrolyte which is formed by mixing aluminum halide with a plurality of inorganic acid salts according to a ratio. The lithium-ion battery prepared by the method is stable in cycle performance, relatively wide in electrochemical window, continuous and high in coulombic efficiency and relatively wide in battery using temperature range; the lithium-ion battery can be widely applied to a plurality of fields such as portable electronic devices, electric vehicles, communication industry and aerospace.

Description

technical field [0001] The invention belongs to the field of ion batteries and their preparation, and relates to the preparation technology of novel aluminum ion batteries, in particular to WS 2 A cathode material mixed with a conductive agent and a binder and a method for preparing the entire battery. technical background [0002] In recent years, with the continuous reduction of non-renewable energy sources such as oil, coal, and natural gas, and the huge environmental pressure and greenhouse effect brought about by their use, the development and utilization of clean renewable energy has become a current research hotspot. Among them, electric energy has become a key factor in the development and utilization of renewable and clean energy because it is at the core stage of various energy conversions. For example, currently existing tidal power generation, hydropower generation, wind power generation, solar power generation, etc. are all formed in the form of electric energy...

Claims

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Application Information

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IPC IPC(8): H01M4/58H01M10/054H01M10/058
CPCH01M4/5815H01M10/054H01M10/058Y02E60/10Y02P70/50
Inventor 焦树强焦汉东孙浩博王俊香
Owner UNIV OF SCI & TECH BEIJING
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