Method for preparing composite electrode material, composite electrode material and battery

A composite electrode and battery technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of high cost of preparation methods, complex synthesis processes, unfavorable environmental sustainable development, etc. effect on sustainable development

Active Publication Date: 2015-03-18
POSITEC POWER TOOLS (SUZHOU) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is that the preparation method of the existing electrod

Method used

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  • Method for preparing composite electrode material, composite electrode material and battery
  • Method for preparing composite electrode material, composite electrode material and battery
  • Method for preparing composite electrode material, composite electrode material and battery

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preparation example Construction

[0050] A preparation method of a composite electrode material, the preparation method comprising: contacting hair with an activator to activate the hair; dispersing the activated hair in a dispersion medium, adding a metal source solution for soaking to absorb metal ions, and then absorbing the metal The ionized hair is calcined in an oxygen-containing atmosphere or an inert atmosphere to obtain a composite electrode material containing metal oxide or metal sulfide.

[0051] The preparation method of the composite electrode material of the invention uses hair as a biological template to synthesize the composite electrode material with special structural properties through biomineralization.

[0052] Among them, the metal oxide may be an oxide of a single metal or a composite metal oxide. Similarly, the metal sulfide can be a single metal sulfide or a composite metal sulfide.

[0053] Hair is an elongated, thread-like product produced in the skin follicles of mammals. The dia...

Embodiment approach

[0070] In a preferred embodiment, the pre-cleaning includes washing the hair in ethanol for 30 minutes, and then washing the hair in 0.25 mol / L nitric acid solution for 30 minutes.

[0071] The pre-washed hair is immersed in the activator to activate it.

[0072] The purpose of the activation is to open the hair's sites of contact with water at the cuticle surface.

[0073] Preferably, the activator is selected from one or more of sodium hydroxide, lithium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, sodium monohydrogen phosphate and potassium monohydrogen phosphate.

[0074] More preferably, the activator is selected from sodium hydroxide and / or lithium hydroxide.

[0075] Preferably, the concentration of the activator is 0.1-1 mol / L; more preferably 0.1-0.5 mol / L.

[0076] In this way, the hair can be fully activated, the combination of hair and metal ions, and the adsorption of metal ions on the hair can be enhanced, and at the same time, the los...

Embodiment 1

[0138] The hair collected from the barber shop is cut to a size of about 5 cm. Soak the cut hair in ethanol for 30 minutes, and then soak it in 0.25mol / L nitric acid aqueous solution for 30 minutes. Finally, soak and activate in 0.5mol / L NaOH aqueous solution for 1h. The revitalized hair is filtered, rinsed and dried.

[0139] 5 grams of the dried hair were weighed and dispersed in ethyl acetate to obtain a dispersion system. The metal source solution of 50ml (1mol / L Mg(NO 3 ) 2 , 1mol / L Mn(NO 3 ) 2 ) into the dispersion system. The dispersion was left at room temperature for 2h.

[0140] The hair was filtered from the dispersion, rinsed and dried at 110°C to constant weight.

[0141] The dried hair was calcined at 900° C. for 8 hours in an air atmosphere.

[0142] The obtained composite electrode material is denoted as A1.

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Abstract

The invention discloses a method for preparing a composite electrode material. The method comprises the following steps: activating hair, dispersing the hair in a dispersing medium, and adding a metal source solution for soaking so as to adsorb metal ions; and calcining the hair in an oxygen-containing atmosphere or an inert atmosphere, thereby obtaining the composite electrode material containing metal oxides or metal sulfides. The invention also discloses a composite electrode material prepared by the preparation method and a battery containing the composite electrode material. According to the method disclosed by the invention, the process is simple and flexible, and complicated and accurate process control is not needed. According to the method disclosed by the invention, the hair serves as a biological template, the hair resources are rich and readily available, hair residues and other wastes can be effectively utilized, wastes are changed into valuable materials, and the cost is low. According to the method disclosed by the invention, lots of chemical reagents are not needed, the method is environment-friendly, and sustainable development of the environment is promoted.

Description

technical field [0001] The invention relates to a preparation method of a composite electrode material. [0002] The invention relates to a composite electrode material obtained by the above preparation method. [0003] The present invention relates to a battery comprising the composite electrode material described above. Background technique [0004] The performance of rechargeable batteries has improved dramatically over the past two decades. Rechargeable batteries can provide high energy density and power, which makes them widely used in hybrid and electric vehicles, as well as large-scale energy storage. [0005] However, the performance, cost, and environmental sustainability of rechargeable batteries are still concerns. Generally speaking, among the components of a rechargeable battery, the electrode material occupies the most important position, and the quality of the electrode material directly affects the performance indicators of the final rechargeable battery. ...

Claims

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Application Information

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IPC IPC(8): H01M4/36
CPCH01M4/362H01M4/483H01M4/502H01M4/523H01M10/0525Y02E60/10
Inventor 莫尔塔扎·塔扎比陈璞
Owner POSITEC POWER TOOLS (SUZHOU) CO LTD
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