Copper vanadate material as well as preparation method and electrochemical performance thereof

A technology of copper vanadate and synthesis method, applied in electrochemical generators, inorganic chemistry, vanadium compounds, etc., to achieve the effect of low equipment requirements

Inactive Publication Date: 2016-08-24
HUAIYIN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, although there are many documents on the preparation of vanadate, there is no report on the synthesis of copper vanadate by using ionic l

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In a 250ml three-necked flask, add 55.85 g of choline chloride and 72.0 g of urea, melt at 80°C, and cool to room temperature. Continue to add Cu(NO 3 ) 2 .3H 2 7.25 g of O, 1.17 g of ammonium metavanadate, and 0.037 g of ammonium fluoride were first stirred at 50°C for half an hour to fully dissolve the raw materials, then the temperature was raised to 180°C and kept for 72 h to stop the reaction. Filter, wash 5 times with water and 1 time with ethanol to obtain a dark green solid. The solid was dried at 100°C for 12 h to obtain a copper vanadate material, denoted as CuVO-1.

Embodiment 2

[0030] In a 250ml three-necked flask, add 27.93 g of choline chloride and 36.0 g of urea, melt at 80°C, and cool to room temperature. Continue to add CuSO 4 .5H 2 O 1.25 g, sodium metavanadate 1.22 g, stirred at 50 °C for half an hour to fully dissolve the raw materials, then raised the temperature to 100 °C, kept for 5 h, and stopped the reaction. Filter, wash 5 times with water and 1 time with ethanol to obtain a dark green solid. The solid was dried at 100°C for 12 h to obtain a copper vanadate material, denoted as CuVO-2.

Embodiment 3

[0032] In a 250 ml three-neck flask, add [Bmim]Br 87.68 g, Cu(NO 3 ) 2 .3H 2 7.25 g of O, 1.17 g of ammonium metavanadate, and 0.037 g of ammonium fluoride were first stirred at 50°C for half an hour to fully dissolve the raw materials, then the temperature was raised to 180°C and kept for 5 h to stop the reaction. Filter, wash 5 times with water and 1 time with ethanol to obtain a dark green solid. The solid was dried at 100°C for 12 h to obtain a copper vanadate material, denoted as CuVO-3.

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PUM

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Abstract

The invention provides a preparation method of a copper vanadate material (CuVO). The preparation method is characterized in that the material is obtained through ionic liquid thermosynthesis and preparation under the temperature condition of 100-180 DEG C and at atmospheric pressure in a solvent such as ionic liquid or a eutectic mixture by taking vanadium pentoxide or metavanadate and copper salt as raw materials. The synthetic method is operated at ordinary pressure, safe, simple and convenient, and is low in equipment requirement. The copper vanadate material prepared by the method has sheet-like or flower-like specific morphology, and is higher in specific surface area. The material has higher electrode charging and discharging specific capacity, and can be used for an electrode material for lithium ion batteries.

Description

technical field [0001] The invention relates to a preparation method of a copper vanadate material and the application of the material as an electrode material in a lithium ion battery. Background technique [0002] Copper vanadate materials are an important class of functional materials. Due to its layered structure and multi-step reduction (Cu 2+ / Cu + and Cu + / Cu 0 ) properties, it is widely considered as a potential electrode material, which can be used in electronic products such as lithium-ion batteries and implantable cardioverter-defibrillators (ICDs). Compared with traditional silver vanadate, silver lithium vanadate and other materials, copper vanadate can provide higher energy density and electrode specific capacity, lighter battery material weight and cheaper manufacturing cost. In addition to the main application in battery materials, copper vanadate also has important applications in the field of catalysis due to the excellent redox catalytic properties o...

Claims

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Application Information

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IPC IPC(8): H01M4/485H01M10/0525C01G31/00
CPCC01G31/00H01M4/485H01M10/0525Y02E60/10
Inventor 赵鹬
Owner HUAIYIN INSTITUTE OF TECHNOLOGY
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