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Method of graphene quantum dot reinforced metal oxide supercapacitor electrode material

A technology of graphene quantum dots and supercapacitors, which is applied in the manufacture of hybrid capacitor electrodes, hybrid/electric double layer capacitors, etc., can solve the problems of performance deterioration, low specific surface area, low conductivity of metal oxides, etc., to improve performance, The effect of large specific surface area and low production cost

Active Publication Date: 2019-10-15
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention solves the problem of performance deterioration caused by the low conductivity and low specific surface area of ​​metal oxides in existing supercapacitors, and provides a method for graphene quantum dots to enhance metal oxide supercapacitor electrode materials

Method used

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  • Method of graphene quantum dot reinforced metal oxide supercapacitor electrode material
  • Method of graphene quantum dot reinforced metal oxide supercapacitor electrode material

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specific Embodiment approach 1

[0018] Specific embodiment one: present embodiment a kind of method of graphene quantum dot reinforced metal oxide supercapacitor electrode material, it is to carry out according to the following steps:

[0019] 1. The current collector material is ultrasonically cleaned with hydrochloric acid solution, acetone and absolute ethanol in sequence for 1 to 5 minutes to obtain the cleaned current collector material;

[0020] The concentration of the hydrochloric acid solution is 1 mol / liter to 3 mol / liter;

[0021] 2. Hydrothermally deposit nickel oxide, tricobalt tetroxide or molybdenum trioxide on the surface of the cleaned current collector material to obtain a metal oxide current collector material;

[0022] 3. Put the metal oxide current collector material in the plasma-enhanced chemical vapor deposition vacuum device. After vacuuming, pass in hydrogen gas, adjust the flow rate of hydrogen gas to 10sccm-100sccm, and pass in argon gas, and adjust the flow rate of argon gas to 1...

specific Embodiment approach 2

[0029] Embodiment 2: This embodiment differs from Embodiment 1 in that the current collector material in step 1 is copper foil, nickel foil, copper foam or nickel foam. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0030] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that: the thickness of the copper foil and nickel foil is 5 μm to 100 μm; the thickness of the foam copper and nickel foam is 0.5 mm to 3mm. Others are the same as in the first or second embodiment.

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Abstract

A method of graphene quantum dot reinforced metal oxide supercapacitor electrode material relates to a method of a reinforced metal oxide supercapacitor electrode material, and solves the problem thatthe low electrical conductivity and the low specific area of the metal oxide in a traditional supercapacitor result in deterioration of performance. The preparation method comprises the steps of: firstly cleaning a current collector material; then, depositing nickel oxide, cobaltosic oxide or molybdenum trioxide on the surface of the current collector material to obtain a metal oxide current collector material; and finally placing the metal oxide current collector material in a plasma enhanced chemical vapor deposition vacuum for radio frequency. The method is used for the graphene quantum dot reinforced metal oxide supercapacitor electrode material.

Description

technical field [0001] The present invention relates to methods of strengthening electrode materials for metal oxide supercapacitors. Background technique [0002] Supercapacitor is an efficient energy storage and transmission system. It has the advantages of high power density, large capacity, long service life, economical and environmental protection, and is widely used in various power supply places. As an emerging energy storage device, supercapacitors have been widely concerned and applied in the fields of electric vehicles, information technology, mobile communications, etc., and the core components are electrode materials with excellent performance. It fills the gap between traditional capacitors and batteries, two types of energy storage devices, and has the potential to further expand its application range. [0003] From the perspective of energy storage, supercapacitors can be divided into electric double layer capacitors and pseudocapacitive capacitors. Pseudocap...

Claims

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Application Information

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IPC IPC(8): H01G11/86H01G11/30H01G11/36H01G11/46H01G11/24
CPCH01G11/24H01G11/30H01G11/36H01G11/46H01G11/86Y02E60/13
Inventor 亓钧雷贾赫男蔡逸飞王昭月冯吉才费维栋
Owner HARBIN INST OF TECH
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