氮磷掺杂生物质介孔炭的合成及其电化学性能

doi:10.3969/j.issn.0253-2417.2023.02.008

Abstract

Abstract:

Nitrogen and phosphorus doped mesoporous carbon(NPC) materials were prepared by carbonization activation at different temperatures, using lignocellulose as raw material, hexa p-carboxylphenoxy cyclotriphosphazene(HCPCP) as nitrogen and phosphorus dopant with NaOH as coactivator, and were characterized by SEM, XRD, XPS and Raman spectra. The sample activated at 650℃(NPC-650) exhibited a rich reticular pore structure, with the average pore size of 5.18 nm, and the mesopore volume ratioreached 89%. A new zinc ion hybrid capacitor was assembled using NPC-650 as cathode material. Electrochemical performance tests showed the specific capacitance was 194 F/g at 0.2 A/gcurrent density, the energy density was 87.3(W·h)/kg, and the power density was 179.5 W/kg. The capacitance retention rate was 98.9% after 5 000 charging and discharging cycles under the current density of 10 A/g.

Key words: lignocellulose, mesoporous carbon materials, zinc ion hybrid capacitor

CLC Number:

TQ35

Bo ZHANG, Xiang LI, Wei LIU, Xiaoli LI. Synthesis and Electrochemical Properties of Biomass Mesoporous Carbon Doped with Nitrogen and Phosphorus[J]. Chemistry and Industry of Forest Products, 2023, 43(2): 56-62.

Figures/Tables 10

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References 15

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样品sample	BET比表面积/ (m²·g^-1) S_BET	总孔体积/ (cm³·g^-1) V_total	微孔体积/ (cm³·g^-1) V_mic	介孔体积/ (cm³·g^-1) V_mes	V_mes/V_total	平均孔径/nm D_pore
EC	2.56	0.014 8	0.000 0	0.014 8	1	23.16
NPC-550	771.12	0.838 8	0.127 3	0.711 5	0.84	4.34
NPC-600	860.69	0.961 9	0.136 0	0.825 9	0.85	5.09
NPC-650	988.45	1.281 8	0.139 5	1.142 3	0.89	5.18
NPC-700	888.15	0.914 7	0.149 8	0.764 9	0.83	4.11

样品sample	C/%	N/%	O/%	P/%
EC	92.12	0	7.82	0
NPC-550	86.07	1.92	10.97	1.04
NPC-600	88.42	1.84	10.69	0.95
NPC-650	89.06	1.27	8.84	0.83
NPC-700	91.04	0.98	7.24	0.40

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Synthesis and Electrochemical Properties of Biomass Mesoporous Carbon Doped with Nitrogen and Phosphorus

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