Ti3C2/MnCo2S4 composite hybrid electrode material and preparation method thereof

Abstract

The invention relates to a Ti3C2 / MnCo2S4 composite hybrid electrode material and a preparation method thereof. The preparation method comprises the steps of: acquiring a large number of single-layer or few-layer two-dimensional Ti3C2 by adopting in-situ corrosion, high-power ultrasonic assistance, centrifugal screening and other methods; preparing a MnCo2S4 nano material by taking manganese nitrate tetrahydrate, cobalt nitrate hexahydrate and urea as raw materials; and then uniformly mixing single-layer or few-layer two-dimensional Ti3C2, urea and a MnCo2S4 solution, and preparing the Ti3C2 / MnCo2S4 composite hybrid electrode material by adopting a hydrothermal method. The preparation method is low in equipment requirement, controllable in operation process and simple in process; and the prepared supercapacitor electrode material has the advantages of environmental friendliness, good charge-discharge cycling stability and rate capability, high specific capacitance, high energy density and the like, and has good application potential in the fields of energy storage and the like.

Description

technical field [0001] The invention belongs to the technical field of energy storage materials and relates to a Ti 3 C 2 / MnCo 2 S 4 Composite hybrid electrode material and preparation method. Background technique [0002] With the rapid development of industry, the world's energy pattern has undergone tremendous changes, and the massive consumption of fossil energy not only has the problem of low energy utilization, but also caused serious environmental pollution. Therefore, higher requirements are put forward for environmental governance. In the face of these situations, the development of new energy has become particularly important. However, these new energy sources have problems such as immediacy and poor stability. Therefore, some devices (batteries, capacitors, etc.) are needed as intermediate energy storage media to store energy that cannot be used immediately for later use. [0003] As an energy storage device between batteries and capacitors, supercapacitors ...

AI Technical Summary

Problems solved by technology

Generally, the transition metal elements used for electrode materials include Ni, Co, Mn, etc. However, single metal compounds have their own defects, such as Co compounds are expensive, Mn will reduce material stability, etc. Therefore, bimetallic compounds The concept of the gradually become reality, for example, pure double transition metal chalcogenide MnCo 2 S 4

However, the bimetallic compound MnCo 2 S 4 Although it has a high specific capacitance, it also has its own limitations, such as low ionic conductivity, lower electronic conductivity than other two-dimensional materials or carbon, etc., which limits its further application in electrode materials

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