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A kind of preparation method of flower-like molybdenum disulfide high-performance supercapacitor electrode

A supercapacitor and molybdenum disulfide technology, applied in hybrid capacitor electrodes, hybrid/electric double layer capacitor manufacturing, molybdenum sulfide, etc., to achieve the effect of low price, simple process operation and high production efficiency

Active Publication Date: 2020-03-17
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are still deficiencies in the reported methods, and it is urgent to optimize and improve

Method used

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  • A kind of preparation method of flower-like molybdenum disulfide high-performance supercapacitor electrode
  • A kind of preparation method of flower-like molybdenum disulfide high-performance supercapacitor electrode
  • A kind of preparation method of flower-like molybdenum disulfide high-performance supercapacitor electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1、160

[0031] Example 1, MoS at 160°C 2 Electrode preparation

[0032] (1) Weigh 0.5g molybdenum sheet (thickness is 0.03mm), 0.4g thiourea powder is placed in the stainless steel reactor of 100mL polytetrafluoroethylene liner, then measure 15mL mass concentration and be that the nitric acid of 68% is poured into reaction The inner lining of the kettle was sealed under high pressure; then the reaction kettle was placed in a high-temperature furnace at 200 ° C for 24 hours; after the reaction was completed, it was naturally cooled to room temperature, and the obtained product was washed with ethanol and distilled water, and finally dried in vacuum to obtain the intermediate product MoO 3 .

[0033] (2) Take 0.1536g intermediate product MoO 3 and 0.6113g of thiourea were added to a beaker with 40mL of distilled water, stirred magnetically at room temperature for 60 minutes, then transferred to a 100mL polytetrafluoroethylene-lined stainless steel reactor and sealed, and reacted at 16...

Embodiment 2、200

[0039] Example 2, MoS at 200°C 2 Electrode preparation

[0040] (1) Weigh 0.5g molybdenum sheet (thickness is 0.03mm), 0.4g thiourea powder is placed in the stainless steel reaction kettle of 100mL volume polytetrafluoroethylene liner, then measure 15mL mass concentration and be that the nitric acid of 68% is poured into The reaction kettle was lined and sealed under high pressure; then the reaction kettle was placed in a high-temperature furnace at 200°C for 24 hours; after the reaction, it was naturally cooled to room temperature, and the obtained product was washed with ethanol and distilled water, and finally vacuum-dried to obtain the intermediate product MoO 3 .

[0041] (2) Take 0.1536g intermediate product MoO 3 and 0.6113g of thiourea were added to a beaker with 40mL of distilled water, stirred magnetically at room temperature for 60 minutes, then transferred to a 100mL polytetrafluoroethylene-lined stainless steel reactor and sealed, and reacted at 200°C for 24 hou...

Embodiment 3、240

[0050] Example 3, MoS at 240°C 2 Electrode preparation

[0051] (1) Weigh 0.5g molybdenum sheet (thickness is 0.03mm), 0.4g thiourea powder is placed in the stainless steel reaction kettle of 100mL volume polytetrafluoroethylene liner, then measure 15mL mass concentration and be that the nitric acid of 68% is poured into The reaction kettle was lined and sealed under high pressure; then the reaction kettle was placed in a high-temperature furnace at 200°C for 24 hours; after the reaction, it was naturally cooled to room temperature, and the obtained product was washed with ethanol and distilled water, and finally vacuum-dried to obtain the intermediate product MoO 3 .

[0052] (2) Take 0.1536g intermediate product MoO 3 and 0.6113g of thiourea were added to a beaker with 40mL of distilled water, stirred magnetically at room temperature for 60 minutes, then transferred to a 100mL polytetrafluoroethylene-lined stainless steel reactor and sealed, and reacted at 240°C for 24 hou...

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Abstract

The invention discloses a preparing method of a flower-like molybdenum disulfide high-performance supercapacitor electrode. Flower-like MoS2 nanospheres of different sizes are synthesized through a two-step hydrothermal method, and the nanospheres as active matter are mixed with conductive matter and an adhesive to prepare a high-specific-capacitance electrode. The specific capacitance of the obtained electrode can reach 932 F g<-1> which is the highest value publicly reported at present under the same testing conditions based on the material, and the retention rate of the specific capacitanceof the electrode can still reach 78% after 1000 times of constant-current charging and discharging.

Description

technical field [0001] The invention belongs to the technical field of supercapacitor preparation methods using metal sulfides as electrode materials, and in particular relates to the preparation of flower-like molybdenum disulfide electrode materials used in supercapacitors. Background technique [0002] As a new type of energy storage device, supercapacitor has the advantages of higher energy density and specific capacitance than traditional capacitors, higher power density than batteries, and less environmental pollution, so it has broad application prospects. The most effective way to develop supercapacitors is to develop electrode materials with superior properties. Molybdenum disulfide (MoS 2 ) As a typical metal sulfide, due to its higher intrinsic ionic conductivity than oxides, higher theoretical specific capacitance than graphite, and graphene-like layered structure, it is widely used in supercapacitor electrode materials. their attention. For example, Cao et al...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/86H01G11/30C01G39/06B82Y40/00
CPCB82Y40/00C01G39/06C01P2002/01C01P2002/85C01P2004/03C01P2004/04C01P2004/32C01P2004/62H01G11/30H01G11/86Y02E60/13
Inventor 李国华操梦雅李盼盼晋华东李婉青陈志成
Owner ANHUI UNIVERSITY
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