Novel anodic oxidation process of nickel-based thin film energy storage material

An energy storage material and anodic oxidation technology, which is applied in anodic oxidation, hybrid capacitor electrodes, hybrid/electric double layer capacitor manufacturing, etc., can solve problems such as insufficient electrolyte oxidation, poor controllability, and poor cycle stability , to achieve the effect of improving capacitance performance and electrochemical stability, short oxidation time and good controllability

Inactive Publication Date: 2020-03-31
SHENYANG NORMAL UNIV
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Problems solved by technology

The advantage of the former is that it is simple and easy to form a film, but its disadvantage is that the controllability is very poor, the cycle stability of the electrode material is insufficient, and post-treatm

Method used

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  • Novel anodic oxidation process of nickel-based thin film energy storage material
  • Novel anodic oxidation process of nickel-based thin film energy storage material
  • Novel anodic oxidation process of nickel-based thin film energy storage material

Examples

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Example Embodiment

[0029] Example 1

[0030] In this embodiment, a thin copper sheet with a thickness of 0.5 mm is used as the substrate, and pure Ni and NiB coatings with a thickness of 3 μm are respectively deposited on the surface by an electroless plating method, and then two are prepared by oxidation under the preferred electrochemical oxidation process conditions of the present invention. A NiO / NiOH supercapacitor electrode material. The electrochemically oxidized sample without the auxiliary oxidant A was used as a comparative test. A three-electrode system was used to study the capacitance performance and electrochemical stability of the oxidized nickel-based thin film energy storage electrode material. Test cyclic voltammetry and constant current charge and discharge in a typical supercapacitor electrolyte (in 2MKOH solution) to evaluate the capacitance performance and electrochemical stability of the electrode material, and use a three-electrode system to study the oxidized nickel-based th...

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Abstract

The invention belongs to the technical field of new material preparation, and relates to a novel anodic oxidation process of a nickel-based thin film energy storage material. Aiming at the existing defects of an electrochemical oxidation process in a method of preparing a NiO/Ni(OH)2 supercapacitor electrode material with excellent performance by a method of firstly preparing a nickel-based metalfilm and then carrying out electrochemical oxidation, a mode of adding a co-oxidant into an electrolyte is provided, the influence of the concentration of the co-oxidant and other electrochemical parameters on the capacitance performance of the prepared nickel oxide/nickel hydroxide electrode material is researched, a novel electrochemical oxidation process of the nickel-based metal thin film energy storage material is simple and easy to implement and good in controllability, and the capacitance performance and the electrochemical stability of the prepared nickel oxide/nickel hydroxide electrode material are improved.

Description

technical field [0001] The invention belongs to the technical field of new material preparation and relates to a novel anodic oxidation process of a nickel-based thin film energy storage material. Background technique [0002] NiO / Ni(OH) 2 Due to its excellent characteristics such as high electrode potential, large electrochemical capacity and good electrochemical cycle stability, it is considered to be a promising electrode material for supercapacitors. In order to improve the capacitive performance of electrodes, researchers have used precipitation conversion, sol-gel, magnetron sputtering, electrochemical cathode / anode deposition, hydrothermal method and other methods to prepare nickel oxide / nickel hydroxide electrode materials. The performance of electrode materials is closely related to its specific surface area and surface structure, and electrode materials with high specific surface area and nanoporous network structure can show excellent capacitance characteristics....

Claims

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Application Information

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IPC IPC(8): C25D11/34H01G11/30H01G11/86H01G11/46
CPCC25D11/34H01G11/30H01G11/46H01G11/86Y02E60/13
Inventor 张轲周岩曹中秋王艳
Owner SHENYANG NORMAL UNIV
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