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Preparation method for polyaniline-coated graphene loaded copper-nickel solid solution composite material

A composite material and graphene technology, applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc., can solve the problem of low specific capacitance, achieve good stability and prevent oxidation

Inactive Publication Date: 2019-04-02
HEILONGJIANG UNIV
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  • Abstract
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Problems solved by technology

However, its own specific capacitance value is low

Method used

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  • Preparation method for polyaniline-coated graphene loaded copper-nickel solid solution composite material
  • Preparation method for polyaniline-coated graphene loaded copper-nickel solid solution composite material
  • Preparation method for polyaniline-coated graphene loaded copper-nickel solid solution composite material

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Embodiment 1

[0032] Embodiment 1: the graphene oxide used in the present embodiment is prepared according to the following steps:

[0033] Step 1. Add 2.4g of graphite powder into 100mL of concentrated sulfuric acid, -1 Stir for 30min at the speed of rotation;

[0034] Step 2, then placed in an ice bath, at 100r·s -1 Stir at high speed, add a mixture of 20g potassium permanganate and 3g sodium nitrate within 1 hour, and continue stirring for 2h;

[0035] Step 3. Remove the ice bath, and set the temperature at room temperature at 100r·s -1 Speed ​​continued to stir for 2h;

[0036] Step 4. Place in a water bath at 35°C at 250r·s -1 Stirring at high speed for 12h;

[0037] Step 5, then add 300mL distilled water to dilute, then add 30% hydrogen peroxide solution until golden yellow, then add 10mL dilute hydrochloric acid with a concentration of 1M, centrifuge and pour into a semi-permeable membrane for dialysis (the purpose is to achieve neutrality) , to obtain graphene oxide.

[0038]...

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Abstract

The invention discloses a preparation method for a polyaniline-coated graphene loaded copper-nickel solid solution composite material, and belongs to the technical field of electrode materials of supercapacitors. The invention solves the technical problem that the graphite oxide is not suitable for being used as the electrode material of the supercapacitor due to the defects of low specific capacitance value and the like. Firstly, a graphene / copper-nickel solid solution composite material is prepared by adopting a microwave method, and a polyaniline / graphene / copper-nickel solid solution core-shell type composite material is prepared by adopting an in-situ polymerization method. The graphene, the copper-nickel solid solution and the polyaniline in the polyaniline / graphene / copper-nickel solid solution composite electrode material prepared by adopting the in-situ polymerization method have a synergistic effect; when the doping amount of the graphene / copper-nickel solid solution is 20 wt%of polyaniline, the specific capacitance value is up to 674.7 F / g at the current density of 1 A / g.

Description

technical field [0001] The invention belongs to the technical field of electrode materials for supercapacitors; in particular, it relates to a preparation method of a polyaniline-coated graphene-loaded copper-nickel solid solution composite material. Background technique [0002] With the growing energy consumption and the huge demand of portable electronics, flexible energy storage devices have attracted extensive attention. Supercapacitors, due to their ease of manufacture, fast discharge rate, high power density and long cycle life, have become a current research hotspot. Currently, scientists are working on the research and development of nanostructured electrode materials with good electrochemical performance and high specific capacitance. [0003] In recent years, carbon materials, conductive polymers, and transition metals have been used as the main pillars of electrode materials. Among carbon materials, graphene oxide has attracted the attention of researchers due ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/24H01G11/30H01G11/32H01G11/48H01G11/86
CPCH01G11/24H01G11/30H01G11/32H01G11/48H01G11/86Y02E60/13
Inventor 赵东宇黄晶张志新宋叙峰曲灵犀
Owner HEILONGJIANG UNIV
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