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A kind of graphene/nickel phthalocyanine supercapacitor electrode material and preparation method thereof

A technology of supercapacitors and electrode materials, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double-layer capacitors to achieve the effects of good cycle stability, mild reaction conditions and simple operation.

Active Publication Date: 2018-09-14
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the reports on carbon materials / metal phthalocyanine composites as electrode materials, it is mainly the composite between multi-walled carbon nanotubes, graphene oxide and metal phthalocyanines, while the research on reduced graphene / metal phthalocyanine composite electrode materials is still blank

Method used

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  • A kind of graphene/nickel phthalocyanine supercapacitor electrode material and preparation method thereof
  • A kind of graphene/nickel phthalocyanine supercapacitor electrode material and preparation method thereof
  • A kind of graphene/nickel phthalocyanine supercapacitor electrode material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] (1) Preparation of functionalized reduced graphene (rGO-pPD): 300 mg of graphene oxide (GO) was weighed, dispersed in 300 ml of deionized water, 900 mg of p-phenylenediamine (pPD) was added, and after sonication for 1 h, under reflux conditions 240 μl of concentrated ammonia water with a concentration of 25 wt % was added to the bottom, reacted at 70° C. for 6 h, washed after the reaction was completed, and dried to obtain functionalized reduced graphene (rGO-pPD).

[0039](2) Preparation of tetranitronickel phthalocyanine (NiTNPc): urea (8.5g), 4-nitrophthalic acid (6.0g), nickel sulfate (1.8g), and ammonium chloride (0.6g) were successively Put it into the flask, add catalyst ammonium molybdate (0.08g) and 10ml nitrobenzene solvent under reflux conditions, heat to 120°C at 3°C / min, and react for 20min; heat the system to 170°C at 5°C / min, react After 3 hours, filter and wash; soak the filter cake in 250mL of 0.5mol / L dilute hydrochloric acid, boil for 10min, filter, a...

Embodiment 2

[0043] (1) Preparation of functionalized reduced graphene (rGO-pPD): Weigh 300 mg of graphene oxide (GO), disperse it in 300 ml of deionized water, add 100 mg of p-phenylenediamine (pPD), and sonicate for 1 h. 400 μl of concentrated ammonia water with a concentration of 25 wt % was added to the bottom, and the reaction was carried out at 100° C. for 24 h. After the reaction was completed, it was washed and dried to obtain functionalized reduced graphene (rGO-pPD).

[0044] (2) Preparation of tetranitro nickel phthalocyanine (NiTNPc): urea (10.0 g), 4-nitrophthalic acid (7.0 g), nickel chloride hexahydrate (2.2 g), ammonium chloride (0.8 g) g) add to the flask in turn, add catalyst ammonium molybdate (0.15g) and 10ml nitrobenzene solvent under reflux conditions, heat to 170°C at 3°C / min, and react for 60min; heat the system to 200°C at 5°C / min ℃, react for 8 hours, filter and wash; soak the filter cake in 250mL 2mol / L dilute hydrochloric acid, boil for 60min, filter, add 250mL ...

Embodiment 3

[0048] (1) Preparation of functionalized reduced graphene (rGO-pPD): 300 mg of graphene oxide (GO) was weighed, dispersed in 300 ml of deionized water, 500 mg of p-phenylenediamine (pPD) was added, and after sonication for 1 h, under reflux conditions 320 μl of concentrated ammonia water with a concentration of 25 wt % was added to the bottom, and the reaction was carried out at 85° C. for 15 h. After the reaction was completed, it was washed and dried to obtain functionalized reduced graphene (rGO-pPD).

[0049] (2) Preparation of tetranitro nickel phthalocyanine (NiTNPc): urea (9.25 g), 4-nitrophthalic acid (6.5 g), nickel chloride hexahydrate (2.0 g), ammonium chloride (0.7 g) g) Add to the flask in turn, add catalyst ammonium molybdate (0.115g) and 10ml nitrobenzene solvent under reflux conditions, heat to 145°C at 3°C / min, and react for 40min; heat the system to 185°C at 5°C / min ℃, after 5.5 hours of reaction, filter and wash; soak the filter cake in 250 mL of 1.25 mol / L ...

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Abstract

The invention discloses a graphene / phthalocyanine supercapacitor electrode material, and a preparation method thereof. The method mainly comprises the following steps: obtaining graphene oxide (GO) through the chemical oxidation method, and using p-phenylenediamine (pPD) as a reducing agent to obtain reduced GO-pPD (rGO-pPD) under the action of strong ammonia water; and carrying out azo-coupling reaction of the rGO-pPD and 2,9,16,23-tetraamino nickel (II) phthalocyanine (NiTAPc) with outstanding photoelectric property to obtain a covalently grafted binary composite material, i.e., rGO-p-Pc. The material and the preparation method thereof provided by the invention have the advantages that the method is simple and convenient to operate, and the yield rate reaches 95%; and the specific capacitance of the electrode material reaches 600F.g<-1>, and the cyclic stability is high.

Description

technical field [0001] The invention belongs to the field of preparation of supercapacitor electrode materials, in particular to a graphene / nickel phthalocyanine supercapacitor electrode material and a preparation method thereof. Background technique [0002] As various electronic products occupy a larger and larger proportion in human life, people have higher requirements for the power durability, charging rate and safety of the power supply. Therefore, it is necessary to develop products with larger capacity and faster charging and discharging. speed storage products. Supercapacitor is a new type of energy storage device that connects traditional capacitors and batteries, and has the characteristics of high power density, long service life and safety. The type of electrode material is the main factor affecting the performance of supercapacitors. At present, electrode materials mainly include: carbon-based materials, metal (hydrogen) oxygen / sulfide and conductive polymers....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/86H01G11/30H01G11/36H01G11/44
CPCY02E60/13
Inventor 黄皓浩楚豫寒毛格李飞羽刘述梅赵建青
Owner SOUTH CHINA UNIV OF TECH
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