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A kind of preparation method and application of nano niobium pentoxide/fto electrode material

A technology of niobium pentoxide and electrode material, which is used in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, hybrid capacitor electrolytes, etc., to achieve the effects of easy mass production, environmental protection, and uniform particle size distribution

Inactive Publication Date: 2019-03-05
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is still a big problem to develop simple and controllable preparation of niobium pentoxide electrode materials with specific composition and morphology

Method used

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  • A kind of preparation method and application of nano niobium pentoxide/fto electrode material
  • A kind of preparation method and application of nano niobium pentoxide/fto electrode material
  • A kind of preparation method and application of nano niobium pentoxide/fto electrode material

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Experimental program
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Effect test

Embodiment 1

[0027] Cut the FTO substrate into small pieces with a width and length of 1.5 cm × 2 cm, and then place them in acetone solution, ethanol solution, and deionized water in turn, and ultrasonically treat each for 15 minutes; after treatment, place in a vacuum drying oven Dry in medium and set aside.

[0028] Add 1.5mmol of niobium pentachloride and 7.5mmol of sodium acetate powder to 40mL of deionized water, put it in a 100ml beaker, put it in an ultrasonic instrument for 10 minutes to make it evenly mixed, and then pour it into a 50mL polytetrafluoroethylene liner In the reaction kettle at the bottom, put a piece of pretreated FTO substrate into the above reaction kettle with the conductive side up, seal it, place it in an oven, control the temperature of the oven at 200°C, and react for 8 hours. Cool to room temperature, take out the FTO substrate, wash it, and dry it in vacuum to obtain the nanometer niobium pentoxide / FTO water-based supercapacitor electrode material.

[002...

Embodiment 2

[0032] The pretreatment mode of FTO substrate is the same as embodiment 1.

[0033] Add 1.5mmol of niobium nitrate and 7.5mmol of sodium acetate powder to 40mL of deionized water, put it in a 100ml beaker, put it in an ultrasonic instrument for 10 minutes to make it evenly mixed, and then pour it into a 50mL polytetrafluoroethylene substrate In the reaction kettle, put a piece of pretreated FTO substrate into the above reaction kettle with the conductive side up, seal it, place it in an oven, control the temperature of the oven at 180°C, and react for 12 hours. At room temperature, take out the FTO substrate, wash it several times, and dry it in vacuum to obtain the electrode material of nanometer niobium pentoxide / FTO water-based supercapacitor.

[0034] The FTO substrate made of the FTO conductive glass in the present invention can be used not only as a substrate but also as a current collector for electrodes.

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Abstract

The invention provides a preparation method and application of a nanometer niobium pentoxide / FTO aqueous supercapacitor electrode material. The preparation method comprises the following steps of 1, preparing a niobium pentoxide precursor mixed liquid, weighing powder of a niobium source and sodium acetate, adding the powder to deionized water, performing uniform ultrasound to obtain the niobium pentoxide precursor mixed liquid for use; 2, preparing the nanometer niobium pentoxide / FTO aqueous supercapacitor electrode material, transferring the niobium pentoxide precursor mixed liquid in the step 1 to a reaction kettle of a polytetrafluoroethylene substrate, adding a pre-processed FTO substrate to the reaction kettle, allowing a conductive surface of the FTO substrate to face upwards, sealing the FTO substrate, placing the reaction kettle in a baking oven for constant-temperature thermal reaction, cooling the furnace to a room temperature after reaction finish, taking out the FTO substrate, washing the FTO substrate, and performing vacuum drying, thereby obtaining the nanometer niobium pentoxide / FTO aqueous supercapacitor electrode material. The preparation method has the advantages of simplicity in process, low cost in raw material, no poison and no toxicity, and mass production is facilitated.

Description

technical field [0001] The invention belongs to the technical field of energy storage materials, and in particular relates to a preparation method and an application of a nanometer niobium pentoxide / FTO water-based supercapacitor electrode material. Background technique [0002] Supercapacitor (supercapacitor), also known as electrochemical capacitor (electrochemcialcapacitor, EC), is a new type of energy storage device based on the electrochemical process of the electrode / solution interface. With higher power density and longer service life, it has broad application prospects. Supercapacitors can be widely used in power supply systems, smart grid systems, industrial energy-saving systems, pulse power supply systems and on many electronic devices. In recent years, there have been many research reports on inorganic nanomaterials, especially in the fields of photoelectrocatalysis, biosensing, microelectronic devices, supercapacitors, and lithium-ion batteries, showing great ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/86H01G11/30H01G11/46H01G11/62
CPCY02E60/13
Inventor 连加彪李华明汪婷赵岩
Owner JIANGSU UNIV
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