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Preparation method of KCu7S4 nano wire, and capacitor

A nanowire and capacitor electrode technology, which is applied in the field of electrode material synthesis, can solve the problems of high cost and obstacles to application, and achieve the effects of low synthesis cost, high energy density and power density, and long cycle life

Inactive Publication Date: 2015-04-15
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, hydrated ruthenium dioxide has the best performance among various pseudocapacitor electrode materials, however, its high cost hinders its application in practical applications

Method used

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  • Preparation method of KCu7S4 nano wire, and capacitor
  • Preparation method of KCu7S4 nano wire, and capacitor
  • Preparation method of KCu7S4 nano wire, and capacitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) Prepare three raw materials, each weighing 0.001mol copper chloride, 0.0005mol elemental sulfur and 3g (0.05mol) potassium hydroxide, and put them in a Teflon (Teflon) tube respectively.

[0039] (2) Add 2ml of absolute ethanol and 2ml of hydrazine hydrate to the above three Teflon tubes respectively, and seal them.

[0040] (3) Put the Teflon (Teflon) tubes prepared in step 2 into muffle furnaces for heating respectively. The heating temperatures are 200°C, 180°C, and 150°C respectively. After heating for 24 hours, tetrasulfide heptacopper-potassium is produced. Nanowires.

[0041] (4) Take out the Teflon (Teflon) tube in step 3, let it cool down to room temperature naturally, then take out the product inside, after ultrasonic cleaning with deionized water, dry at 60°C to get the product.

[0042] figure 1 The XRD pattern of tetrasulfide heptacopper-potassium nanowires prepared by the present invention shows that the product prepared by the present invention is i...

Embodiment 2

[0049] (1) Weigh 0.001mol of copper chloride, 0.0005mol of elemental sulfur and 3g (0.05mol) of potassium hydroxide, and place them in a Teflon (Teflon) tube respectively.

[0050] (2) Add 1.8ml of absolute ethanol and 1.8ml of hydrazine hydrate to the above reaction vessel, and seal it.

[0051] (3) Put the reaction container prepared in step 2 into an oven for heating at 120° C., and generate tetrasulfide heptacopper-potassium nanowires after heating for 48 hours.

[0052] (4) Take out the Teflon (Teflon) tube in step 3, cool it with water to room temperature, then take out the product inside, ultrasonically clean it with deionized water or absolute ethanol, and dry it at 60°C.

[0053] (5) Two tetrasulfide heptacopper-potassium nanowires were pressed into thin films at an atmospheric pressure of 8 MPa, and the two tetrasulfide heptacopper-potassium nanowire films were respectively fixed on the carbon block.

[0054] (6) 1 mg and 2 mg of manganese nanoparticle layers were p...

Embodiment 3

[0058] (1) Prepare four raw materials, each weighing 0.001mol copper chloride, 0.0005mol elemental sulfur and 3g (0.05mol) potassium hydroxide, and put them in a Teflon (Teflon) tube respectively.

[0059] (2) Add 2.2ml of absolute ethanol and 2.2ml of hydrazine hydrate to the above reaction vessel respectively, and seal it.

[0060] (3) The reaction containers prepared in step 2 were respectively placed in an oven for heating at a temperature of 240° C., and tetrasulfide heptacopper-potassium nanowires were formed after heating for 10 hours.

[0061] (4) Take out the Teflon (Teflon) tube in step 3, cool it down to room temperature naturally, then take out the product inside, ultrasonically clean it with deionized water or absolute ethanol, and dry it at 60°C.

[0062] (5) Four parts of tetrasulfide heptacopper-potassium nanowires were pressed into thin films under an atmospheric pressure of 15 MPa, and the tetrasulfide heptacopper-potassium nanowire films were respectively fi...

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Abstract

The invention discloses a preparation method of a KCu7S4 nano wire. The preparation method is characterized in that the method comprises following steps of (1) weighing copper chloride, elemental sulfur and potassium hydroxide in a molar ratio of 1:0.5:50 into a reaction container; (2) adding absolute ethanol and hydrazine hydrate with an equal volume into the reaction container and sealing; (3) putting the sealed reaction container into a thermostatically controlled heating device to be heated at 120-240 DEG C for 10-48 h; and (4) taking out the reaction container after the heating process is finished, cooling to room temperature, taking out a product and cleaning to obtain the KCu7S4 nano wire. The invention also relates to a capacitor using the material as electrodes.

Description

technical field [0001] The invention relates to the field of electrode material synthesis, in particular to a method for preparing a tetrasulfide heptacopper-potassium nanowire, and the invention also relates to a capacitor using the tetrasulfide heptacopper-potassium nanowire as an electrode. Background technique [0002] At present, energy shortage and environmental problems are becoming more and more serious. In order to ensure sustainable economic growth and a favorable energy supply system, the development of new energy materials and new energy storage systems has become one of the world's research hotspots. With the development of science and technology and the advent of the information society, various computer-related electronic equipment, medical equipment and household appliances are gradually popularized, and the demand for high-performance memory backup power is becoming more and more urgent. In addition to certain requirements for energy density, these energy st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G3/12B82Y30/00B82Y40/00H01G11/30
Inventor 代书阁奚伊胡陈果刘建林张开友岳旭乐程璐
Owner CHONGQING UNIV
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