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

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....

AI Technical Summary

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-treatment is required; the latter is insufficient in oxidation due to the simple composition of the electrolyte, resulting in the capacitance The performance is not fully utilized, and the cycle stability is not very good

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