Preparation method and application of flexible all-solid-state super-capacitor based on two-dimensional pleated metal porphyrin framework ultra-thin nano-sheets

A technology of supercapacitors and metalloporphyrins, which is applied in the manufacture of hybrid/electric double layer capacitors and electrodes of hybrid capacitors, can solve problems such as hindering the efficient transmission of electrolyte ions, low conductivity of MPFs, and limited capacitive performance, and achieve excellent electrochemical performance. The effect of energy storage performance, simple operation, and good mechanical properties

Inactive Publication Date: 2019-05-14
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the low conductivity of MPFs limits its application in flexible energy storage devices
[0004] Polypyrrole has great advantages in the field of flexible energy storage due to its inherent flexibility and conductivity. However, the PPy flexible film prepared by electrochemical polymerization has a dense structure, which hinders the electrolyte ions in the PPy film electrode. Efficient transmission, which in turn limits the further improvement of its capacitive performance

Method used

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  • Preparation method and application of flexible all-solid-state super-capacitor based on two-dimensional pleated metal porphyrin framework ultra-thin nano-sheets
  • Preparation method and application of flexible all-solid-state super-capacitor based on two-dimensional pleated metal porphyrin framework ultra-thin nano-sheets
  • Preparation method and application of flexible all-solid-state super-capacitor based on two-dimensional pleated metal porphyrin framework ultra-thin nano-sheets

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1: Preparation of two-dimensional Cu-TCPP ultrathin nanosheets

[0043] (1) Copper nitrate trihydrate (Cu(NO 3 ) 2 ·3H 2 O) (1.8mg, 0.0075mmol), 4,4'-bipyridine (BPY) (0.78mg, 0.005mmol), 10.0mg polyvinylpyrrolidone (PVP) dissolved in 6mL N,N-dimethylformamide (DMF ) and ethanol (V:V=3:1) in a mixture;

[0044] (2)H 6TCPP (2.0mg, 0.0025mmol) was dissolved in a mixture of 2mL DMF and ethanol (V:V=3:1);

[0045] (3) Add (2) dropwise to (1), ultrasonicate (power 240W, frequency 40kHz) for 10min, transfer to blast drying oven, and react at 80°C for 3h;

[0046] (4) After the reaction is finished, after cooling to room temperature to remove the supernatant, the resulting product is washed with ethanol and centrifuged (12000rpm, 10min) for 3 times. The TEM photo of the two-dimensional wrinkled Cu-TCPP ultrathin nanosheet is as follows: figure 1 shown.

Embodiment 2

[0047] Embodiment 2: the preparation of Cu-TCPP film

[0048] The two-dimensional 5.0mg Cu-TCPP ultrathin nanosheets were dispersed in the solution containing 3mg iodine (I 2 ) in 10mL of acetone, at 30V, energized for 30s, to obtain the Cu-TCPP film, the SEM photo of the two-dimensional wrinkled Cu-TCPP ultrathin nanosheet film, as figure 2 shown.

Embodiment 3

[0049] Embodiment 3: the preparation of PPy film

[0050] Solution preparation: Add 3.495g sodium p-toluenesulfonate, 1.141g p-toluenesulfonic acid, 600μL pyrrole into 60mL deionized water, let stand for 10h, stir magnetically for 10min, use Ag / AgCl electrode as reference electrode, Pt sheet as For the counter electrode, a blank ITO glass is used as the working electrode, and the constant voltage is 0.8V, and electrochemical polymerization is carried out, and the energization time is 600s to prepare the PPy film. Front SEM photographs of PPy films, such as image 3 shown.

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Abstract

The invention discloses a preparation method and application of a flexible all-solid-state super-capacitor based on two-dimensional pleated metal porphyrin framework ultra-thin nano-sheets. The preparation method of the flexible all-solid-state super-capacitor based on the two-dimensional pleated metal porphyrin framework ultra-thin nano-sheets specifically comprises six steps, namely: one, preparation of two-dimensional pleated Cu-TCPP ultra-thin nano-sheets; two, preparation of Cu-TCPP film; three, preparation of PPy film; four, preparation of Cu-TCPP / PPy flexible composite film; five, preparation of H<2>SO<4>-PVA hydrogel; six, preparation of Cu-TCPP / PPy flexible all-solid-state super-capacitors. The two-dimensional ultra-thin Cu-TCPP nano-sheet prepared by the method disclosed by the invention has a pleated structure, which provides channels of a larger size, and the channels are easy to transport electrolyte ions; the flexible all-solid-state super-capacitor prepared on the basisof the two-dimensional ultra-thin Cu-TCPP nano-sheet has excellent electrochemical energy storage performance and good mechanical properties, and can maintain capacitance stability under large angle bending.

Description

technical field [0001] The invention relates to the field of capacitor technology, in particular to a preparation method of a flexible all-solid supercapacitor based on a two-dimensional wrinkled metalloporphyrin framework ultra-thin nanosheet and its application in the field of electrochemical energy storage. Background technique [0002] With the development of portable flexible electronic devices, new electronic devices are gradually developing in the direction of miniaturization, intelligence, flexibility, and ultra-long standby time. People have great interest in flexible products such as bendable mobile phones and wearable electronic devices. Higher requirements are also put forward for transparent and flexible electronic devices, and storage devices that provide energy for electronic products are required to be light, thin, and flexible. However, commercial energy storage devices of lithium-ion batteries and supercapacitors are usually too bulky and inflexible to meet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30H01G11/24H01G11/86
CPCY02E60/13
Inventor 赵为为王维康赵强彭佳丽金贝贝陈田田刘淑娟黄维
Owner NANJING UNIV OF POSTS & TELECOMM
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