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Preparation method of nickel-cobalt-phosphorus-carbon-nickel hydroxide ternary composite electrode material

A technology of nickel hydroxide and ternary compounding, which is applied in the field of nanocomposite materials science, can solve the problems of unsatisfactory cycle performance of nickel-cobalt phosphide, and achieve the effects of shortening ion transmission distance, improving specific capacitance and good electrochemical performance

Active Publication Date: 2019-03-29
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cycle performance of nickel-cobalt phosphide has not been ideal

Method used

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  • Preparation method of nickel-cobalt-phosphorus-carbon-nickel hydroxide ternary composite electrode material
  • Preparation method of nickel-cobalt-phosphorus-carbon-nickel hydroxide ternary composite electrode material
  • Preparation method of nickel-cobalt-phosphorus-carbon-nickel hydroxide ternary composite electrode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Get 1 mmol of nickel nitrate hexahydrate, 2 mmol of cobalt nitrate hexahydrate, 6 mmol of ammonium fluoride, and 15 mmol of urea to be dissolved in 70 ml of deionized water, fully stir for 30 minutes and transfer to 100ml polytetrafluoroethylene reactor. Next, the pretreated nickel foam with a mass of 0.6010 g was put into the reactor, and the reactor was moved to a blast drying oven, and reacted at a constant temperature at 120° C. for 3 hours. After the reaction kettle was cooled to room temperature, the foamed nickel was taken out, rinsed with deionized water and absolute ethanol respectively, and finally placed in a vacuum oven at 60°C for 12 hours to obtain the foamed nickel supporting the nickel-cobalt wire nanoarray matrix;

[0033] (2) Soak the nickel foam loaded with the nickel-cobalt wire nanoarray matrix in step (1) in 100ml of 0.05 mol / liter glucose solution, bathe in water at 80°C for 6h, and place the nickel foam on corundum after taking it out In cru...

Embodiment 2

[0038](1) Get 1 mmol of nickel nitrate hexahydrate, 2 mmol of cobalt nitrate hexahydrate, 6 mmol of ammonium fluoride, and 15 mmol of urea to be dissolved in 70 ml of deionized water, fully stir for 30 minutes and transfer to 100ml polytetrafluoroethylene reactor. Next, the pretreated nickel foam with a mass of 0.6000 g was put into the reactor, and the reactor was moved to a blast drying oven, and reacted at a constant temperature at 120° C. for 3 hours. After the reactor was cooled to room temperature, the nickel foam was taken out, rinsed with deionized water and absolute ethanol, and finally dried in a vacuum oven at 60°C for 12 hours. The nickel foam loaded with the nickel-cobalt wire nano-array matrix is ​​obtained.

[0039] (2) Soak the nickel foam loaded with the nickel-cobalt wire nanoarray matrix in step (1) in 100ml of 0.05 mol / liter glucose solution, bathe in water at 80°C for 6h, and place the nickel foam in a corundum crucible after taking it out In A, move the...

Embodiment 3

[0044] (1) Get 1 mmol of nickel nitrate hexahydrate, 2 mmol of cobalt nitrate hexahydrate, 6 mmol of ammonium fluoride, and 15 mmol of urea to be dissolved in 70 ml of deionized water, fully stir for 30 minutes and transfer to 100ml polytetrafluoroethylene reactor. Next, the pretreated nickel foam with a mass of 0.6001 g was put into the reactor, and the reactor was moved to a blast drying oven, and the reaction was performed at a constant temperature of 120° C. for 3 hours. After the reactor was cooled to room temperature, the nickel foam was taken out, rinsed with deionized water and absolute ethanol, and finally dried in a vacuum oven at 60°C for 12 hours. A nickel foam loaded with a nickel-cobalt wire nanoarray matrix is ​​obtained.

[0045] (2) Soak the nickel foam loaded with the nickel-cobalt wire nanoarray matrix in step (1) in 100ml of 0.05 mol / liter glucose solution, bathe in water at 80°C for 6h, and place the nickel foam in a corundum crucible after taking it out ...

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Abstract

The invention, which relates to the scientific field of nano composite materials, aims at providing a preparation method of a nickel-cobalt-phosphorus-carbon-nickel hydroxide ternary composite electrode material. The method comprises the following steps: growing a nickel-cobalt sheet wire nano-array substrate on the surface of foamed nickel by using nickel nitrate hexahydrate, cobalt nitrate hexahydrate, ammonium fluoride and urea, carrying out immersion in a glucose solution and heat treatment in an argon atmosphere, and then carrying out reaction with sodium hypophosphite to obtain a nickel-cobalt-phosphorus-carbon nano array; and then making a reaction with nickel chloride hexahydrate and urea; to be specific, enabling the nickel chloride hexahydrate reacts with the urea to obtain foamed nickel loaded with a nickel-cobalt-phosphorus-carbon-nickel hydroxide nano-array. The preparation method has advantages of simple process and strong operability; the nanor array can grows directly on the foamed nickel substrate; and the prepared electrode can be used as the electrode of a super capacitor directly, so that the super capacitor has the broad application prospects. Therefore, the cycle performance, overall specific capacitance and energy density of the electrode material can be improved; and the thus the electrode has the higher energy density and excellent cycle performance.

Description

technical field [0001] The invention relates to the scientific field of nanocomposite materials, in particular to a method for preparing a nickel-cobalt-phosphorus-carbon-nickel hydroxide ternary composite electrode material for supercapacitors. Background technique [0002] Supercapacitor (also known as electrochemical capacitor) is a new type of electrochemical energy storage device, which is a new energy device between secondary batteries and traditional capacitors. It can provide energy density several orders of magnitude higher than traditional capacitors, and it has higher power density and longer cycle life than commonly used secondary batteries. Supercapacitors have attracted extensive attention from researchers due to their advantages such as fast charge and discharge rates, high power density, and long cycle life. [0003] Transition metal phosphides have been extensively studied as a novel electrode material in supercapacitors. Compared with monometallic nickel-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30H01G11/32H01G11/86H01G11/24H01G11/26B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01G11/24H01G11/26H01G11/30H01G11/32H01G11/86Y02E60/13
Inventor 张启龙宗泉杨辉
Owner ZHEJIANG UNIV
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