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Preparation method of CoMo2S4/foamed nickel supercapacitor electrode material

A technology of supercapacitors and electrode materials, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double-layer capacitors, etc., can solve the problems of energy density gap, cycle stability failing to reach its theoretical cycle life, etc., and achieve high conductivity, The effect of shortening the charge transfer path and simplifying the process flow

Active Publication Date: 2021-12-24
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although great progress has been made in improving the energy density and cycle stability of supercapacitors in recent years, there is still a large gap in energy density compared with batteries, and the cycle stability has not reached its theoretical cycle life. There is still huge room for improvement in the development of capacitors

Method used

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  • Preparation method of CoMo2S4/foamed nickel supercapacitor electrode material
  • Preparation method of CoMo2S4/foamed nickel supercapacitor electrode material
  • Preparation method of CoMo2S4/foamed nickel supercapacitor electrode material

Examples

Experimental program
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Effect test

Embodiment 1

[0028] (1) The size of a nickel 5 × 1 cm by 2 M hydrochloric acid, respectively, washed with ethanol and deionized water, ultrasonic, vacuum dried standby;

[0029] (2) Weigh 3 mmolCo (NO 3 ) 2 · 6h 2 O was dissolved in 50 mL of deionized water, sufficiently stirred at room temperature for 10 min, to give a pink solution; Weigh 3 mmolNa 2 MOO 4 · 7h 2 O and 5 mmolCO (NH 2 ) 2In the pink solution added to the above obtained, it is vigorously stirred for 20 min to obtain a uniform solution, spare;

[0030] (3) The foam nickel of step (1) and the solution of step (2) are transferred to the polytetrafluoroethylene liner, and after sealing 140 ° C, the reaction is 12 h, naturally cooled to room temperature, collect the reaction. The foam nickel with the product is used to clean three times with deionized water and anhydrous ethanol, dry after drying. 4 / Foam nickel, spare;

[0031] (4) COMOo obtained by step (3) 4 / NF is placed in the polytetrafluoroethylene liner, adding 50 ml of 0....

Embodiment 2

[0033] (1) Size of 5 × 1 cm foam nickel was washed with 2 M hydrochloric acid, anhydrous ethanol and deionized water.

[0034] (2) Weigh 3 mmolco (NO 3 ) 2 · 6h 2 O Soluble in 50 ml deionized water, stirred at room temperature for 10 min to give a pink solution; weigh 3 mmolna 2 MOO 4 · 7h 2 O and 5 mmolco (NH 2 ) 2 In the pink solution added to the above obtained, it is vigorously stirred for 20 min to obtain a uniform solution, spare;

[0035] (3) The foam nickel of step (1) and the solution of step (2) are transferred to the polytetrafluoroethylene liner, and after sealing 140 ° C, the reaction is 12 h, naturally cooled to room temperature, collect the reaction. The foam nickel with the product is used to clean three times with deionized water and anhydrous ethanol, dry after drying. 4 / Foam nickel, spare;

[0036] (4) COMOo obtained by step (3) 4 / Nf is placed in the polytetrafluoroethylene liner, adding 50 ml of 0.01 m of thioacetamide solution. After sealed, the reaction k...

Embodiment 3

[0038] (1) Size of 5 × 1 cm foam nickel was washed with 2 M hydrochloric acid, anhydrous ethanol and deionized water.

[0039] (2) Weigh 3 mmolco (NO 3 ) 2 · 6h 2 O Soluble in 50 ml deionized water, stirred at room temperature for 10 min to give a pink solution; weigh 3 mmolna 2 MOO 4 · 7h 2 O and 5 mmolco (NH 2 ) 2 In the pink solution added to the above obtained, it is vigorously stirred for 20 min to obtain a uniform solution, spare;

[0040] (3) The foam nickel of step (1) and the solution of step (2) are transferred to the polytetrafluoroethylene liner, and after sealed, it is placed in a temperature of 140 ° C for 12h. Naturally, after cooling to room temperature, after collecting the reaction The foam nickel of the product is cleaned with deionized water and anhydrous ethanol, and after drying, get Comoo 4 / Foam nickel, spare;

[0041] (4) COMOo obtained by step (3) 4 / Nf is placed in a polytetrafluoroethylene liner, and 50 ml of 0.01 m of thioacetamide solution is added....

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Abstract

The invention aims to provide a CoMo2S4 nanorod electrode material with a rough surface and a preparation method, and belongs to the technical field of supercapacitor electrode materials. The preparation method comprises the steps of firstly, conducting in-situ growth by taking Co(NO3)2.6H2O, Na2MoO4.7H2O and CO(NH2)2 as raw materials on pretreated foamed nickel through a hydrothermal method, and obtaining a CoMoO4 / foamed nickel precursor; and then vulcanizing the precursor by taking thioacetamide as a sulfur source, washing and drying to obtain the CoMo2S4 nanorod array. The preparation method is simple to operate, environment-friendly and reliable; and the prepared CoMo2S4 is of a nano array structure, and the surface of the CoMo2S4 is of a porous structure. The CoMo2S4 electrode material prepared by the invention has good rate capability and excellent cycle performance, and is a very promising supercapacitor electrode material.

Description

Technical field [0001] The present invention belongs to the technical field ultracapacitor electrode material, particularly relates to a method for preparing binary transition metal sulfide electrode material for supercapacitors. Background technique [0002] As the demand for energy is growing, urgent need to develop renewable energy alternative to traditional energy sources, but new green energy and other periodic wind, solar or hydro and instability limits their use as the main energy source, and therefore the development of efficient design green energy storage device is imminent. In many electrochemical storage system, the super capacitor has excellent unique properties, such as lower maintenance costs, rapid charge and discharge rates, long cycle life, high power density and good safety factor, and therefore has been widely used Garments equipment, track, new energy vehicles and aerospace and other fields. [0003] Super capacitor positive electrode, a negative electrode cu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/36
CPCH01G11/86H01G11/36Y02E60/13
Inventor 杨文静张宇宇郭春丽
Owner TAIYUAN UNIV OF TECH
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