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A kind of preparation method of flexible supercapacitor electrode and device

A supercapacitor and electrode technology, which is applied in the field of functional device preparation, can solve the problems affecting the flexibility of porous metal substrates and limit the wide application of porous metal sheets, so as to reduce flexibility, avoid oxidation, and improve uniformity and bonding force. Effect

Inactive Publication Date: 2018-10-16
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large pores in the porous metal sheet, the reaction solvent during the growth of the active material easily enters the pores and reacts with the metal material, which affects the flexibility of the porous metal substrate, thereby limiting the use of the porous metal sheet in flexible storage. Wide range of applications in the field of energy devices

Method used

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  • A kind of preparation method of flexible supercapacitor electrode and device
  • A kind of preparation method of flexible supercapacitor electrode and device
  • A kind of preparation method of flexible supercapacitor electrode and device

Examples

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Embodiment 1

[0037] The flexible porous metal sheet used in this embodiment is nickel foam, which is a commercially available nickel foam, which has good electrical conductivity, flexibility and reactivity.

[0038] A preparation method for a flexible supercapacitor electrode, comprising the following steps:

[0039] Step 1, the cleaning of foamed nickel: get the foamed nickel (0.1600g) of 2cm * 2cm, adopt mass fraction successively to be 5%NaOH and 5%Na 2 CO 3Alkaline buffer solution, 3M hydrochloric acid, acetone, 6M hydrochloric acid, ethanol, and deionized water were used to ultrasonically clean the nickel foam. The ultrasonic time of each cleaning agent was 10 minutes, and then dried;

[0040] Step 2, pressing of foamed nickel: adopt tablet press machine to carry out pressing process to the foamed nickel after step 1 cleaning, pressure is 2MPa, and pressurization time is 4min; The foamed nickel after pressing is soaked in ethylene glycol and stands-by;

[0041] Step 3, the growth of...

Embodiment 2

[0055] The flexible porous metal sheet used in this embodiment is nickel foam, which is a commercially available nickel foam, which has good electrical conductivity, flexibility and reactivity.

[0056] To prepare NiSe, NiCo on foamed nickel substrate 2 S 4 Taking the supercapacitor electrode as an active material as an example, the following steps are included:

[0057] Step 1, the cleaning of foamed nickel: get the foamed nickel (0.1600g) of 2cm * 2cm, adopt mass fraction successively to be 5%NaOH and 5%Na 2 CO 3 Alkaline buffer solution, 3M hydrochloric acid, acetone, 6M hydrochloric acid, ethanol, and deionized water were used to ultrasonically clean the nickel foam. The ultrasonic time of each cleaning agent was 10 minutes, and then dried;

[0058] Step 2, pressing of foamed nickel: adopt tablet press machine to carry out pressing process to the foamed nickel after step 1 cleaning, pressure is 2MPa, and pressurization time is 4min; The foamed nickel after pressing is s...

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Abstract

A method for preparing flexible supercapacitor electrodes and devices, belonging to the technical field of functional device preparation. Including: First, use alkaline buffer solution, dilute acid, organic solvent, acid solution, absolute ethanol, deionized water to clean the porous metal sheet in sequence, and dry it; Press for 3-6min, soak the pressed porous metal sheet in the corresponding reaction solvent for use; take the porous metal sheet soaked in the reaction solvent, grow active materials on the porous metal sheet, and dry to obtain the present invention. Flexible supercapacitor electrodes. The present invention adopts the opposite sequence to the traditional method, that is, the cleaned porous metal sheet is pressed first, and then the active material is grown on it, the porosity of the pressed porous metal sheet is reduced, and the growth of the active material is only in the The surface of the hole-shaped metal sheet is processed, so that the flexibility of the hole-shaped metal sheet is well maintained, and can be widely used in flexible electronic devices.

Description

technical field [0001] The invention belongs to the technical field of preparation of functional devices, and in particular relates to a method for preparing supercapacitor electrodes and devices based on a porous metal sheet substrate. Background technique [0002] A supercapacitor is an energy storage element between a battery and a traditional capacitor, capable of rapid charge and discharge, and based on the electrochemical process at the electrode / solution interface. Due to the advantages of high energy density, long cycle life, environmental friendliness and high safety, supercapacitors have been widely used in transportation, mobile communications, information technology, aerospace and other fields. With the emergence of more and more wearable or windable new electronic devices, such as electronic paper, foldable displays and other multimedia devices, the demand for flexible energy storage devices is becoming more and more urgent, so the flexible supercapacitor Resea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/86H01G11/84
CPCY02E60/13
Inventor 贾春阳唐中华万中全周乾隆叶星科
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA