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Method for preparing pseudocapacitor electrode based on femtosecond laser composite anodic oxidation

A femtosecond laser and anodic oxidation technology, applied in the manufacture of hybrid/electric double layer capacitors, etc., can solve the problems of poor stability of active materials, increased charge transfer resistance, and unfavorable recycling, and achieve low cost and high efficiency. Processing efficiency and the effect of improving the reaction rate

Active Publication Date: 2018-06-08
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

This type of method increases the charge transfer resistance and reduces the reaction rate
In addition, the stability of active substances is not good, which is not conducive to long-term recycling

Method used

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  • Method for preparing pseudocapacitor electrode based on femtosecond laser composite anodic oxidation
  • Method for preparing pseudocapacitor electrode based on femtosecond laser composite anodic oxidation
  • Method for preparing pseudocapacitor electrode based on femtosecond laser composite anodic oxidation

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Embodiment 1

[0038] The material to be processed is selected as copper foam, and the implementation process of a method for preparing pseudocapacitive electrodes based on femtosecond laser composite electrochemical oxidation processing of the present invention is illustrated, including the following steps:

[0039] (1) build as figure 1 The femtosecond laser processing system shown; the femtosecond laser processing system consists of a femtosecond laser 1, an aperture 2, an attenuation plate 3, an optical shutter 4, a dichromatic mirror 5; a plano-convex lens 6, a material to be processed 7, and a six-degree-of-freedom translation stage 8. Composed of lighting lamp 9, beam splitter 10, charge coupled device (CCD) 11, and computer 12. The femtosecond laser 1 produces a wavelength of 800nm, a pulse duration of 35fs, and a repetition rate of 1kHz. After passing through the diaphragm 2, the attenuation plate 3, and the optical shutter 4, it is reflected by the dichroic mirror 5 onto the plano-...

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Abstract

The invention relates to a method for preparing a pseudocapacitor electrode based on femtosecond laser composite anodic oxidation and belongs to the field of processing and preparing of Faraday pseudocapacitor electrodes. The method comprises the following steps of (1) cleaning a copper foam material by using deionized water and anhydrous ethanol separately; (2) carrying out femtosecond laser surface processing treatment on a cleaned pure sample; (3) cleaning the sample subjected to femtosecond laser surface treatment again to remove surface scraps caused by laser processing; and (4) carryingout electrochemical anodic oxidation on the sample and preparing a flower-like pseudocapacitor electrode with a micro-nano composite structure. Compared with the prior art, the method for preparing the pseudocapacitor electrode provided by the invention has the advantages that the method is implemented in an air environment all the way, a vacuum device is not needed, the preparation period is short and the pseudocapacitor electrode has good area-to-capacitance performance.

Description

technical field [0001] The invention belongs to the technical field of processing and preparation of Faraday pseudocapacitance electrodes, and in particular relates to a method for preparing pseudocapacitance electrodes by femtosecond laser composite anodic oxidation. Background technique [0002] With the continuous development of science and technology and the continuous increase of population, the problems of energy depletion and environmental pollution are becoming more and more serious. Therefore, the development of environmentally friendly and energy-efficient energy storage devices and energy conversion has gradually attracted people's attention. Among many energy storage devices, supercapacitor (electrochemical battery) is a high-performance energy storage element with high energy density and power density, good cycle life, and rapid charge and discharge. Wide application prospects. [0003] According to the formation mechanism of supercapacitors, they can be divide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86
Inventor 姜澜王锁成胡洁
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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