Super capacitor electrode material prepared by doping carbon material and preparation method thereof

Abstract

The invention discloses a super capacitor electrode material prepared by doping a carbon material and a preparation method thereof. The preparation method comprises the following steps: (1) mixing DMF with an organic ligand through magnetic stirring to obtain a solution A; (2) adding a coordination metal dissolved in deionized water into the solution A to obtain a solution Ba, and then adding a doped material aqueous solution to obtain a solution Bb; (3) adding a KOH deionized water solution into the solution Bb to obtain a solution C, and evaporating to dryness to obtain a fixed initial product D; (4) calcining to obtain a product E; and (5) pickling and drying to obtain a target carbon material. The specific capacitance and the energy density of the two doped carbon materials C / B-700 and C / P-700 prepared by the invention are greatly improved, and both the C / B-700 and the C / P-700 have excellent super-electrical properties. The composite material has great value in the application of the super-electrode material, and has a great practical use and a commercial application value.

Description

technical field [0001] The invention relates to the technical field of electrode materials, in particular to a supercapacitor electrode material prepared by doping carbon materials and a preparation method. Background technique [0002] As a new type of clean energy storage device, supercapacitor occupies an important position in the field of electricity storage due to its advantages of fast charging and discharging speed, high safety performance, and long service life. Carbon materials have been the research focus of supercapacitor electrode materials because of their stable chemical properties, high electrical conductivity, and high specific surface area. However, carbon materials also have the disadvantages of small specific capacitance and low energy density, and carbon materials prepared from natural materials have unstable raw material sources and low reproducibility, while carbon-based materials with high performance (such as carbon fibers, Carbon nanotubes) are extr...

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Problems solved by technology

The doping of atoms such as boron and sulfur can also play the same role, but, one: how to prepare carbon materials with high energy density has always been a problem we have to solve, and the other: the preparation of carbon materials by existing technologies The method is more extreme, or it is prepared by using natural materials or by a high-demand method. The former is unstable and has the risk of inconsistent quality and structure, and the latter has a very high finished product, which is only suitable for small batches in the laboratory. The preparation of doped carbon materials, especially the preparation of doped carbon materials, is itself doped with a variety of elements. In this process, a variety of impurities need to be removed, which will cause problems with raw materials and lead to a substantial increase in industrialization steps.

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