MXene/sodium alginate derived carbon three-dimensional aerogel as well as preparation method and application thereof

A technology of sodium alginate and airgel, applied in the field of airgel, can solve the problems such as the inability to form three-dimensional gel materials, and achieve the effects of promoting ion diffusion and electron transmission, promoting exposure, and retaining activity
CN111422873AActive Publication Date: 2020-07-17BEIJING UNIV OF CHEM TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING UNIV OF CHEM TECH
Publication Date
2020-07-17

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Abstract

The invention provides MXene / sodium alginate derived carbon three-dimensional aerogel as well as a preparation method and application thereof. The preparation method of the MXene / sodium alginate derived carbon three-dimensional aerogel, provided by the invention, comprises the following steps: carrying out liquid-phase mixing on an MXene dispersion liquid and a sodium alginate aqueous solution toobtain an MXene / sodium alginate mixed solution; adding a calcium chloride solution into the MXene / sodium alginate mixed solution, and gelatinizing sodium alginate to obtain MXene / sodium alginate hydrogel; carbonizing sodium alginate through high-temperature treatment, and then washing with 1-3mol / L hydrochloric acid and deionized water to obtain the MXene / sodium alginate derived carbon three-dimensional aerogel material. The MXene / sodium alginate derived carbon three-dimensional aerogel material provided by the invention has good electrochemical performance when used in the field of supercapacitors.
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Description

technical field

[0001] The invention belongs to the field of airgel, and in particular relates to a MXene / sodium alginate derived carbon three-dimensional airgel and its preparation method and application. Background technique

[0002] Transition metal carbide or nitride, also known as MXene, is a new two-dimensional material discovered for the first time in 2011. It has the characteristics of high electrical conductivity of graphene and hydrophilicity of graphene oxide, and has flexible and adjustable components. The advantages such as the controllable minimum nanometer layer thickness have shown great potential in the application of electrode materials for secondary batteries and supercapacitors. However, due to the relatively dense MXene sheets, the specific surface area is not high, and its mass specific capacity is low.

[0003] In recent years, people have improved the transport of ions or electrons on the surface of MXene sheets by compounding with materials such as ...

Claims

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