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
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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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