Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method and application of zinc cobaltate, and zinc cobaltate/carbon cloth flexible composite material

A composite material, zinc cobaltate technology, applied in the field of electrochemical materials, can solve the problems of complicated steps, high temperature calcination, and long preparation time, and achieve the effect of short reaction time, no need for binder, and rapid preparation

Active Publication Date: 2017-07-14
CENT SOUTH UNIV
View PDF2 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that in the reported methods related to electrochemical synthesis, the step of high temperature calcination has not been avoided, and the preparation time is long and the steps are complicated.
So far there is no report on the preparation of zinc cobaltate by one-step electrochemical deposition

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method and application of zinc cobaltate, and zinc cobaltate/carbon cloth flexible composite material
  • Preparation method and application of zinc cobaltate, and zinc cobaltate/carbon cloth flexible composite material
  • Preparation method and application of zinc cobaltate, and zinc cobaltate/carbon cloth flexible composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A preparation method of zinc cobaltate of the present invention, comprises the following steps:

[0049] (1) The stainless steel sheet was used as the electrodeposition substrate, and it was ultrasonically cleaned three times with deionized water, ethanol, and acetone respectively, each time for 15 minutes, and finally washed with deionized water and dried for later use;

[0050] (2) Prepare 100mL of mixed electrolyte, wherein the cobalt nitrate concentration is 5mmol / L, the zinc nitrate concentration is 50mmol / L, the tartaric acid concentration is 30mmol / L, and the sodium hydroxide concentration is 2mol / L;

[0051] (3) Pass inert protective gas into the electrolyte solution prepared in step (2) to saturation, and at a temperature of 97° C., and stir the electrolyte solution, put the stainless steel sheet after step (1) into it, and carry out electrolysis Chemical deposition reaction, a three-electrode system is used in the reaction process, the working electrode is a s...

Embodiment 2

[0054] A preparation method of zinc cobaltate of the present invention, comprises the following steps:

[0055] (1) The gold sheet is used as the electrodeposition substrate, and it is ultrasonically cleaned three times with deionized water, ethanol, and acetone respectively, each time for 15 minutes, and finally washed with deionized water and dried for use;

[0056] (2) Prepare 100mL of mixed electrolyte, wherein the concentration of cobalt nitrate is 5mmol / L, the concentration of zinc nitrate is 50mmol / L, the concentration of tartaric acid is 30mmol / L, and the concentration of lithium hydroxide is 2mol / L;

[0057] (3) Pass the inert protective gas into the electrolyte solution prepared in step (2) to saturation, and stir the electrolyte solution at a temperature of 97° C., put the gold sheet after step (1) into the electrolytic Chemical deposition reaction, a three-electrode system is used in the reaction process, the working electrode is a gold sheet, the counter electrode...

Embodiment 3

[0060] A preparation method of zinc cobaltate / carbon cloth flexible composite material, comprising the following steps:

[0061] (1) Select flexible carbon cloth (model is W0S1002) as the conductive matrix, and ultrasonically clean it three times with deionized water, ethanol, and acetone respectively, each time for 15 minutes, and finally wash and dry with deionized water to obtain the pre- Treated conductive substrate;

[0062] (2) Prepare 100mL of mixed electrolyte, wherein the cobalt acetate concentration is 5mmol / L, the zinc acetate concentration is 50mmol / L, the tartaric acid concentration is 30mmol / L, and the sodium hydroxide concentration is 2mol / L;

[0063] (3) Pass an inert protective gas into the electrolyte solution prepared in step (2) to saturation, and stir the electrolyte solution at a temperature of 97° C., and put it into the pretreated conductive substrate after step (1), The electrochemical deposition reaction was carried out. A three-electrode system was ...

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
Diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of zinc cobaltate. The preparation method comprises the steps of performing mixing on a zinc source, a cobalt source, an organic ligand and alkali to prepare an electrolyte; and pumping an inert protection gas to the electrolyte, and performing an electrochemical deposition reaction on the surface of a conductive base body, and obtaining the zinc cobaltate on the surface of the conductive base body after the reaction is completed. The invention also discloses a preparation method of a zinc cobaltate / carbon cloth flexible composite material; the preparation method comprises the steps of selecting carbon cloth as the conductive base body and performing pretreatment on the conductive base body; performing mixing on the zinc source, the cobalt source, the organic ligand and alkali to prepare the electrolyte; putting the pre-treated conductive base body into the electrolyte, pumping the inert protection gas and performing an electrochemical deposition reaction on the surface of the carbon cloth, and after the reaction is completed, performing cleaning and drying to obtain the zinc cobaltate / carbon cloth flexible composite material. One-step electrochemical deposition is initially adopted to prepare the zinc cobaltate material in the preparation method disclosed by the invention, so that extremely high application prospects in the fields of a lithium ion battery, a supercapacitor, an oxygen evolution reaction catalyst and the like can be achieved.

Description

technical field [0001] The invention belongs to the field of electrochemical materials, in particular to a preparation method of zinc cobaltate and zinc cobaltate / carbon cloth flexible composite material. Background technique [0002] As an important functional material, zinc cobaltate has the characteristics of low cost and environmental friendliness, and has extremely broad application prospects in many fields such as lithium-ion batteries, supercapacitors, and oxygen evolution reaction catalysts; it is used as an electrode material for lithium-ion batteries , zinc ions can carry out alloying / dealloying reactions with lithium ions, which increases the energy density of the negative electrode of lithium ion batteries. [0003] In the existing reports, most of the zinc cobaltate materials are prepared by high-temperature calcination of the zinc-cobalt compound precursor synthesized by the hydrothermal method. Such as the literature [J.Mater.Chem A,2014,2,5434-5440], zinc co...

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
IPC IPC(8): H01M4/36H01M4/525H01M4/58H01M4/583H01M4/62H01M10/0525H01M10/42H01G11/30H01G11/32H01G11/86
CPCH01G11/30H01G11/32H01G11/86H01M4/362H01M4/525H01M4/5825H01M4/583H01M4/625H01M10/0525H01M10/4235Y02E60/10Y02E60/13
Inventor 何震吕可舟赵匡民韩珊
Owner CENT SOUTH UNIV