Poly-dopamine based porous carbon fiber/MoSe2 composite material and preparation method thereof

A technology of porous carbon fiber and molybdenum diselenide, which is used in hybrid capacitor electrodes, electrical components, battery electrodes, etc., can solve the problems of single structure and difficult to meet practical applications, and achieves easy operation, prevents agglomeration, and mild preparation process. Effect

Inactive Publication Date: 2016-07-06
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Traditional electrospun nanofibers have a smooth surface and a single structure, which is difficult to meet the needs of practical applications

Method used

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  • Poly-dopamine based porous carbon fiber/MoSe2 composite material and preparation method thereof
  • Poly-dopamine based porous carbon fiber/MoSe2 composite material and preparation method thereof
  • Poly-dopamine based porous carbon fiber/MoSe2 composite material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0043] This embodiment includes the following steps:

[0044] (1) Polystyrene PS was dissolved in DMF to prepare a spinning solution, and PS porous fibers were prepared by electrospinning technology absorbed by ethanol;

[0045] (2) Put the PS porous fiber in the dopamine solution for 4 hours to obtain the coating layer of polydopamine;

[0046] (3) Carbonize the polydopamine-modified PS porous fiber at high temperature to obtain a carbon fiber material with a porous structure, denoted as 4-CF;

[0047] (4) Soak 4-CF in concentrated acid solution for 5-6 hours for acidification, then wash with deionized water repeatedly for 3-5 times, dry for later use;

[0048] (5) Add selenium elemental substance into hydrazine hydrate (3mg / mL), heat and dissolve for later use;

[0049] (6) Put 20mg of carbon fiber, 1mL of selenium-containing elemental hydrazine hydrate solution and 4.76mg of sodium molybdate into the solvent, transfer to a hydrothermal kettle, and conduct a hydrothermal r...

Embodiment 2

[0052] The dopamine soaking time in Example 1 is changed to 2h, and the rest are the same as in Example 1. The finally obtained carbon fiber is recorded as 2-CF. Since the coated polydopamine layer is too thin, the porous structure of the fiber is destroyed after high-temperature calcination. See attached image 3 .

Embodiment 3

[0054] The dopamine immersion time in embodiment 1 is changed into 6h, and all the other are the same as embodiment 1, and the carbon fiber finally obtained is denoted as 6-CF, and too much polydopamine cladding layer then makes polydopamine aggregate appear on the fiber surface, see attached image 3 .

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Abstract

The invention belongs to the technical field of a composite fiber material, in particular relates to a poly-dopamine based porous carbon fiber / MoSe2 nanosheet composite material and a preparation method thereof. The method comprises the following steps of preparing a spinning solution with a spinnable high-polymer material, and preparing to obtain porous fiber with an uniform structure by an electrostatic spinning device; immersing the porous fiber in a dopamine solution, and controlling the thickness of a poly-dopamine cladding layer by adjusting the concentration and the reaction time of the dopamine solution; carrying out high-temperature carbonization to achieve carbonization on the poly-dopamine modified porous fiber material; and uniformly arranging MoSe2 nanosheets on the surface of the porous fiber by a hydrothermal method. The method disclosed by the invention is safe and environment-friendly, and the prepared porous carbon fiber / MoSe2 has the advantages of high active substance content, high specific area, high conductivity, stable physical and chemical performance and the like, and is an ideal electrode material for preparing an active electric catalyst for a hydrogen evolution reaction.

Description

technical field [0001] The invention belongs to the technical field of composite fiber materials, and in particular relates to a porous carbon fiber / molybdenum diselenide composite material and a preparation method thereof. Background technique [0002] Nanofibers are a typical representative of one-dimensional nanomaterials, and electrospinning technology, as a method that can directly and continuously prepare polymer nanofibers, has been widely concerned. The prepared nanofibrous membrane can be widely used in catalyst supports, hydrogen storage materials, adsorption materials and Electrode materials for supercapacitors or lithium-ion batteries, etc., are conducive to solving the energy crisis and environmental pollution problems in today's society. [0003] Traditional electrospun nanofibers have a smooth surface and a single structure, which is difficult to meet the needs of practical applications. The introduction of the porous structure increases the specific surface...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/40H01G11/30
CPCH01M4/58H01M4/587Y02E60/10
Inventor 刘天西鄢家杰张由芳黄云鹏左立增顾华昊鲁恒毅缪月娥
Owner FUDAN UNIV
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