Three-dimensional nitrogen-doped capsule-shaped carbon paper electrode material and preparation method thereof

An electrode material and nitrogen doping technology, applied in the field of materials science, can solve the problems of poor nitrogen content and control of toxic carbon precursors, and achieve the effects of strong shape controllability, good cycle stability, and abundant sources

Active Publication Date: 2017-05-10
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method can solve the problem of poor control of nitrogen content and the use of toxic ca

Method used

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  • Three-dimensional nitrogen-doped capsule-shaped carbon paper electrode material and preparation method thereof
  • Three-dimensional nitrogen-doped capsule-shaped carbon paper electrode material and preparation method thereof
  • Three-dimensional nitrogen-doped capsule-shaped carbon paper electrode material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0035] A preparation method of a three-dimensional nitrogen-doped capsule-shaped carbon paper electrode material includes the following steps:

[0036] (1) Preparation of PDA / MgAl-LDH (PL)

[0037] First, at room temperature, mix manganese nitrate, aluminum nitrate, urea and deionized water in a container with a mass ratio of 4:1:19:100; then, transfer the above mixed solution into a round flask and reflux at 100°C Stir; After the reaction is over, cool to room temperature naturally. Then add 400 mg of dopamine (the mass ratio of dopamine to manganese nitrate is 1:10) into the above reaction solution, stir for a certain period of time at room temperature, wash with deionized water and ethanol 4 times, and freeze-dry to obtain the PL composite material;

[0038] (2) Preparation of three-dimensional nitrogen-doped capsule carbon paper electrode material (HCF2-400)

[0039] First, take a certain amount of the above PL dissolved in deionized water and ultrasonically disperse it, etch it ...

Embodiment 2

[0042] A preparation method of a three-dimensional nitrogen-doped capsule-shaped carbon paper electrode material includes the following steps:

[0043] (1) Preparation of PDA / MgAl-LDH (PL)

[0044] First, at room temperature, mix manganese nitrate, aluminum nitrate, urea and deionized water in a container with a mass ratio of 3:1:19:100; then, transfer the above-mentioned mixed solution into a round flask and reflux at 100°C Stir; After the reaction is over, cool to room temperature naturally. Then add 400 mg of dopamine (the mass ratio of dopamine to manganese nitrate is 1:15) into the above reaction solution, stir for a certain period of time at room temperature, wash with deionized water and ethanol 4 times, and freeze-dry to obtain the PL composite material;

[0045] (2) Preparation of three-dimensional nitrogen-doped capsule carbon paper electrode material (HCF2-600)

[0046] First, take a certain amount of the above PL dissolved in deionized water and ultrasonically disperse it...

Embodiment 3

[0049] A preparation method of a three-dimensional nitrogen-doped capsule-shaped carbon paper electrode material includes the following steps:

[0050] (1) Preparation of PDA / MgAl-LDH (PL)

[0051] First, at room temperature, mix manganese nitrate, aluminum nitrate, urea and deionized water in a container at a mass ratio of 2:1:19:100; then, transfer the above mixed solution into a round flask and reflux at 100°C Stir; After the reaction is over, cool to room temperature naturally. Then add 400 mg of dopamine (the mass ratio of dopamine to manganese nitrate is 1:20) into the above reaction solution, stir for a certain period of time at room temperature, wash with deionized water and ethanol 4 times, and freeze-dry to obtain the PL composite material;

[0052] (2) Preparation of three-dimensional nitrogen-doped capsule carbon paper electrode material (HCF2-800)

[0053] First, take a certain amount of the above PL dissolved in deionized water and ultrasonically disperse it, etch it wi...

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Abstract

The invention discloses a three-dimensional nitrogen-doped capsule-shaped carbon paper electrode material and a preparation method thereof. The method disclosed by the invention comprises the following steps: firstly with manganese nitrate and aluminum nitrate as raw materials, and urea as an alkali source, carrying out stirring and backflow at a certain temperature to obtain an Mg-Al layered metal hydroxide Mg-Al LDH; adding a certain amount of dopamine after carrying out cooling, carrying out stirring for a certain period of time at normal temperature to obtain a PL composite material coated with dopamine; then, carrying out a once etching-roasting-twice etching process to obtain a three-dimensional nitrogen-doped capsule-shaped carbon paper electrode material HCF2. According to the three-dimensional nitrogen-doped capsule-shaped carbon paper electrode material disclosed by the invention, the preparation process and the necessary equipment are simple, the raw material sources are rich, and the reaction temperature is relatively low; the obtained three-dimensional nitrogen-doped capsule-shaped carbon paper electrode material HCF2 not only has good thermal stability, high crystallinity and high energy density and power density, but also has high morphology controllability, thereby being one of the ideal energy materials.

Description

Technical field [0001] The invention belongs to the technical field of materials science, and specifically relates to a three-dimensional nitrogen-doped capsule carbon paper electrode material and a preparation method thereof. Background technique [0002] The development of human society and the increase in energy demand have led to a crisis in the supply and demand of traditional fossil energy and the deterioration of the environment. Environmental protection issues such as acid rain and greenhouse gases have become increasingly prominent. People are urgently required to continuously seek new clean energy. The emergence of supercapacitors and lithium batteries conforms to the demand for new clean and renewable energy sources (such as solar energy, wind energy, biomass energy, geothermal energy and tidal energy, etc.). Lithium battery has long cycle life, short charge and discharge time, high energy density, high power density, wide operating temperature range, good reliability ...

Claims

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Application Information

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IPC IPC(8): H01G11/86H01G11/32H01G11/26
CPCY02E60/13H01G11/86H01G11/26H01G11/32
Inventor 韩生陈红艳陈达明常兴刘金宝蔺华林刘平赵志成周嘉伟许广文
Owner SHANGHAI INST OF TECH
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