Graphene/phthalocyanine supercapacitor electrode material, and preparation method thereof

A technology for 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 simple operation, good cycle stability and mild reaction conditions.

Active Publication Date: 2017-05-17
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Graphene/phthalocyanine supercapacitor electrode material, and preparation method thereof
  • Graphene/phthalocyanine supercapacitor electrode material, and preparation method thereof
  • Graphene/phthalocyanine supercapacitor electrode material, and preparation method thereof

Examples

Experimental program
Comparison scheme
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 ultrasonication for 1 h, Add 240 μl of 25wt% concentrated ammonia water under reflux, and react at 70°C for 6 h. After the reaction is completed, wash and dry to obtain functionalized reduced graphene (rGO-pPD).

[0039](2) Preparation of tetranitronickel phthalocyanine (NiTNPc): urea (8.5 g), 4-nitrophthalic acid (6.0 g), nickel sulfate (1.8 g), and ammonium chloride (0.6 g) were sequentially Add to the flask, add the catalyst ammonium molybdate (0.08g) and 10 ml of nitrobenzene solvent under reflux, heat to 120°C at 3°C / min, react for 20 min; heat the system to 170°C at 5°C / min After reacting for 3 hours, filter and wash; soak the filter cake in 250mL of 0.5mol / L dilute hydrochloric acid, boil for 10min, filter, then add 250mL of 1mol / L NaOH solution and heat to 60°C unt...

Embodiment 2

[0043] (1) Preparation of functionalized reduced graphene (rGO-pPD): 300 mg of graphene oxide (GO) was weighed, dispersed in 300 ml of deionized water, 100 mg of p-phenylenediamine (pPD) was added, and after ultrasonication for 1 h, Add 400 μl of 25 wt% concentrated ammonia water under reflux, and react at 100°C for 24 h. After the reaction is completed, wash and dry to obtain functionalized reduced graphene (rGO-pPD).

[0044] (2) Preparation of tetranitronickel phthalocyanine (NiTNPc): urea (10.0 g), 4-nitrophthalic acid (7.0 g), nickel chloride hexahydrate (2.2 g), ammonium chloride (0.8 g) Add to the flask in turn, add the catalyst ammonium molybdate (0.15g) and 10 ml of nitrobenzene solvent under reflux, heat at 3°C / min to 170°C, react for 60 min; heat the system at 5°C / min to 200°C, react for 8 hours, filter and wash; soak the filter cake in 250mL 2mol / L dilute hydrochloric acid and boil for 60min, filter, then add 250mL1mol / L NaOH solution and heat to 95°C until no ammo...

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 ultrasonication for 1 h, Under reflux, 320 μl of concentrated ammonia water with a concentration of 25 wt% was added, and reacted 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 tetranitronickel phthalocyanine (NiTNPc): urea (9.25 g), 4-nitrophthalic acid (6.5 g), nickel chloride hexahydrate (2.0 g), ammonium chloride (0.7 g) Add to the flask in turn, add the catalyst ammonium molybdate (0.115g) and 10 ml of nitrobenzene solvent under reflux, heat at 3°C / min to 145°C, react for 40 min; heat the system at 5°C / min to 185°C, react for 5.5 hours, filter and wash; soak the filter cake in 250mL1.25mol / L dilute hydrochloric acid, boil for 35min, filter, then add 250mL1mol / ...

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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 an increasing proportion in human life, people have higher requirements for power durability, charging speed and safety of power supplies, so it is necessary to develop products with larger capacity and faster charging and discharging. high-speed power storage products. Supercapacitor (supercapacitor) is a new type of energy storage device that combines traditional capacitors with batteries. It 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/30H01G11/36H01G11/44
CPCY02E60/13H01G11/86H01G11/30H01G11/36H01G11/44
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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