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Preparation method of symmetrical super capacitor with high power density

A high-power density, supercapacitor technology, applied in the manufacture of hybrid/electric double-layer capacitors, hybrid capacitor electrodes, hybrid capacitor electrolytes, etc., to achieve mild reaction conditions, increased capacity and energy density, and low preparation costs.

Inactive Publication Date: 2018-05-08
DONGGUAN LIANZHOU INTPROP OPERATION MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the power density of supercapacitors prepared by this method needs to be further improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for preparing a symmetrical high power density supercapacitor, comprising the following steps:

[0027] (1) Weigh the molybdenum powder and add it to the beaker, then add hydrogen peroxide dropwise to the beaker under ice-water bath conditions, stir and mix at 1500rpm for 5h, and prepare the molybdenum oxide precursor solution; wherein, the ratio of molybdenum powder and hydrogen peroxide is For 1g: 15ml;

[0028] (2) Add thiourea solution dropwise to the molybdenum oxide precursor solution prepared in step (1) while stirring, continue stirring for 3 hours after the dropwise addition, transfer the obtained mixed solution to a hydrothermal kettle, and react at 200° C. for 8 hours, After the reaction is completed, cool to room temperature, centrifuge the reaction product, wash the obtained solid with water, wash with alcohol, and dry in sequence to obtain a molybdenum disulfide layered nanomaterial;

[0029] (3) After weighing ruthenium trichloride hydrate and g...

Embodiment 2

[0034] A method for preparing a symmetrical high power density supercapacitor, comprising the following steps:

[0035] (1) Weigh the molybdenum powder and add it to the beaker, then add hydrogen peroxide dropwise to the beaker under ice-water bath conditions, stir and mix for 10h at 1500rpm, and obtain the molybdenum oxide precursor solution; wherein, the ratio of molybdenum powder and hydrogen peroxide is For 1g: 20ml;

[0036] (2) Add thiourea solution dropwise to the molybdenum oxide precursor solution prepared in step (1) while stirring, continue stirring for 5 hours after the dropwise addition, transfer the obtained mixed solution to a hydrothermal kettle, and react at 200° C. for 12 hours, After the reaction is completed, cool to room temperature, centrifuge the reaction product, wash the obtained solid with water, wash with alcohol, and dry in sequence to obtain a molybdenum disulfide layered nanomaterial;

[0037] (3) Weigh the hydrated ruthenium trichloride and grin...

Embodiment 3

[0042] A method for preparing a symmetrical high power density supercapacitor, comprising the following steps:

[0043](1) Weigh the molybdenum powder and add it to the beaker, then add hydrogen peroxide dropwise to the beaker under ice-water bath conditions, stir and mix for 6h at 1500rpm, and obtain the molybdenum oxide precursor solution; wherein, the ratio of molybdenum powder and hydrogen peroxide is For 1g: 18ml;

[0044] (2) Add thiourea solution dropwise to the molybdenum oxide precursor solution prepared in step (1) while stirring, continue stirring for 3.5 hours after the dropwise addition, transfer the obtained mixed solution to a hydrothermal kettle, and react at 200°C for 9 hours , cooling to room temperature after the reaction is completed, centrifuging the reaction product, washing the obtained solid with water, washing with alcohol, and drying in sequence to obtain a molybdenum disulfide layered nanomaterial;

[0045] (3) Weigh the hydrated ruthenium trichlori...

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PUM

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Abstract

The invention discloses a preparation method of a symmetrical super capacitor with high power density. The method comprises a step of firstly preparing a molybdenum disulfide layered nano material, astep of preparing MoS2 / RuO2 nano composite material by using a solvothermal method, preprocessing a tantalum film, then setting a prepared slurry on the tantalum film by hot pressing, and carrying outvacuum sintering to obtain an electrode sheet, and a step of stacking and placing the above prepared electrode sheet, a diaphragm and the electrode sheet into a battery model, injecting electrolyte,and carrying out assembly to obtain the symmetrical super capacitor with high power density. The prepared super capacitor has the advantages of good stability, high charging and discharging efficiency, a long repeated service life and environmental protection.

Description

Technical field: [0001] The invention relates to the field of capacitor preparation, in particular to a method for preparing a symmetrical high power density supercapacitor. Background technique: [0002] Supercapacitor is a new type of high-efficiency energy storage device between secondary batteries and traditional capacitors. It has the advantages of high power density, short charging time, long service life, energy saving and environmental protection, and has been widely used in microelectronic devices, automobiles, etc. Start-up, energy harvesting and storage, and military. Especially in the application of the energy field, supercapacitors have shown great potential, and have attracted the attention of research institutions and enterprises at home and abroad. [0003] Patent 201310017823.0 discloses an asymmetric supercapacitor based on a water-based neutral electrolyte and its preparation. The asymmetric supercapacitor uses manganese dioxide nanosheets or manganese di...

Claims

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Application Information

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IPC IPC(8): H01G11/24H01G11/30H01G11/46H01G11/58H01G11/84H01G11/86B82Y30/00B82Y40/00
CPCY02E60/13H01G11/24B82Y30/00B82Y40/00H01G11/30H01G11/46H01G11/58H01G11/84H01G11/86
Inventor 陈东进
Owner DONGGUAN LIANZHOU INTPROP OPERATION MANAGEMENT CO LTD
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