Ni(OH)2-Co2(OH)3Cl composite nanometer array electrode materials

A nano-array, electrode material technology, applied in hybrid capacitor electrodes, nanotechnology, nanotechnology and other directions, can solve the problems of unsatisfactory electrochemical performance, reduced performance, single electrochemical reaction, etc., to achieve low cost, simple operation, raw materials cheap effect

Inactive Publication Date: 2018-04-06
ANYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Ni(OH) 2 It is a commonly used supercapacitor electrode material, the common Ni(OH) 2 Nanomaterials are easy to agglomerate during the charging and discharging process, which leads to their

Method used

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  • Ni(OH)2-Co2(OH)3Cl composite nanometer array electrode materials
  • Ni(OH)2-Co2(OH)3Cl composite nanometer array electrode materials
  • Ni(OH)2-Co2(OH)3Cl composite nanometer array electrode materials

Examples

Experimental program
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Example Embodiment

[0026] Example 1

[0027] ①The thickness of the commercially available is 1.5mm, and the areal density is 280-420g / m 2 , The pore size is 0.2-0.6mm foam nickel cut into the size of 1cm×4cm, and ultrasonic treatment with 3mol / L hydrochloric acid for 30 minutes to remove the surface oxides. Wash with ethanol and deionized water alternately, and dry in vacuum for use.

[0028] ②In a beaker, add 1.6 mmol of nickel chloride, 1.6 mmol of urea, and 1.6 mmol of ammonium fluoride to 16 mL of water, stir and sonicate for 15 minutes until all are dissolved. Transfer the solution into a 25mL polytetrafluoroethylene liner autoclave, then put the pretreated 1cm×4cm nickel foam into the reaction vessel, react at 100°C for 12 hours, then cool to room temperature naturally, and use deionized water and ethanol Wash several times and vacuum dry the sample to obtain Ni(OH) grown on nickel foam 2 Nano array.

[0029] ③In a beaker, add 1.6 mmol of cobalt chloride to 16 mL of water, and stir until all is...

Example Embodiment

[0033] Example 2

[0034] ①The thickness of the commercially available is 1.5mm, and the areal density is 280-420g / m 2 , The pore size is 0.2-0.6mm foam nickel cut into the size of 1cm×4cm, and ultrasonic treatment with 3mol / L hydrochloric acid for 30 minutes to remove the surface oxides. Wash with ethanol and deionized water alternately, and dry in vacuum for use.

[0035] ②In a beaker, add 0.8 mmol of nickel sulfate, 0.8 mmol of urea, and 0.8 mmol of ammonium fluoride to 16 mL of water, and stir until all are dissolved. Transfer the solution into a 25mL polytetrafluoroethylene liner autoclave, then put the pretreated 1cm×4cm foamed nickel into the reaction vessel, react at 120°C for 12 hours, cool to room temperature naturally, and wash with deionized water and ethanol Several times, vacuum dry the sample to obtain Ni(OH) grown on nickel foam 2 Nano array.

[0036] ③In a beaker, add 0.8 mmol of cobalt chloride to 16 mL of water, and stir until all is dissolved. Transfer the solu...

Example Embodiment

[0038] Example 3

[0039] ①The thickness of the commercially available is 1.5mm, and the areal density is 280-420g / m 2 , The pore size is 0.2-0.6mm foam nickel cut into the size of 1cm×4cm, and ultrasonic treatment with 3mol / L hydrochloric acid for 30 minutes to remove the surface oxides. Wash with ethanol and deionized water alternately, and dry in vacuum for use.

[0040] ②In a beaker, add 3.2 mmol of nickel acetate, 3.2 mmol of urea, and 3.2 mmol of ammonium fluoride to 16 mL of water, and stir until all are dissolved. Transfer the solution into a 25mL polytetrafluoroethylene liner autoclave, then put the pretreated 1cm×4cm foamed nickel into the reactor, react at 100°C for 24 hours, cool to room temperature naturally, and wash with deionized water and ethanol Several times, vacuum dry the sample to obtain Ni(OH) grown on nickel foam 2 Nano array.

[0041] ③In a beaker, add 3.2 mmol of cobalt chloride to 16 mL of water, and stir until all is dissolved. Transfer the solution int...

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Abstract

The present invention discloses Ni(OH)2-Co2(OH)3Cl composite nanometer array electrode materials suitable as supercapacitor electrode materials, belonging to the field of electrode material technology. The preparation of the materials comprise the steps of: mixing nickel salt, urea and ammonium fluoride, dissolving the mixed materials into water, and preparing A reaction solution; adding the A reaction solution into a high-pressure autoclave, then putting pretreated foam into the high-pressure autoclave, controlling a reaction temperature and time, and obtaining an Ni(OH)2 nano array; and dissolving cobalt salt into water to prepare B reaction solution, putting the prepared Ni(OH)2 nano array into the B reaction solution, controlling the reaction temperature and time, and obtaining an Ni(OH)2-Co2(OH)3Cl composite nanometer array. The obtained Ni(OH)2-Co2(OH)3Cl composite nanometer array electrode materials have excellent electrochemical performance, and a specific capacitance can reach680.29F/g when a current density is 1.0 A/g.

Description

technical field [0001] The present invention relates to a kind of Ni(OH) suitable for supercapacitor electrode material 2 -Co 2 (OH) 3 The invention relates to a composite nano-array material of Cl, which belongs to the technical field of functional nano-materials. Background technique [0002] As a new type of promising energy storage and conversion device, supercapacitors are widely used in electronic equipment and new energy due to their advantages such as fast charge and discharge, long cycle life, kinetically favorable charge transfer, high power density, and safe operation. Automobiles and other aspects have been widely used. According to different energy storage mechanisms, supercapacitors are divided into electric double layer supercapacitors and pseudocapacitor supercapacitors. As one of the commonly used electrode materials for pseudocapacitor supercapacitors, transition metal compounds store energy through redox reactions between metal ions and electrolytes. ...

Claims

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Application Information

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IPC IPC(8): H01G11/24H01G11/30H01G11/46H01G11/86B82Y30/00B82Y40/00
CPCY02E60/13H01G11/24B82Y30/00B82Y40/00H01G11/30H01G11/46H01G11/86
Inventor 杜卫民张紫瑞刘立新许志献邓德华
Owner ANYANG NORMAL UNIV
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