Preparation of PANI/MnO2/rGO-P ternary composite electrode and its application in supercapacitors

doi:10.19799/j.cnki.2095-4239.2025.0036

Abstract

Abstract:

Lamellar nitrogen-doped reduced graphene oxide (rGO-P) was synthesized under controlled synthesis conditions. Subsequently, PANI/MnO₂ tubular pseudocapacitive materials were intercalated with rGO-P to form ternary PANI/MnO₂/rGO-P composites using a two-step hybridization method. X-ray diffraction, scanning electron microscopy, and energy-dispersive spectroscopy were used to analyze the microstructure and morphology of the composites. The electrochemical performance of the composites was evaluated through cyclic voltammetry, galvanostatic charge-discharge, and electrochemical impedance spectroscopy measurements. The results demonstrate that PANI/MnO₂/rGO-P₇₅ exhibits a specific capacitance of 635 F/g at 0.5 A/g current density, with an energy density of 17.5 Wh/kg at a power density of 0.45 kW/kg, outperforming both rGO-P and PANI/MnO₂ binary composites at the same current densities. Furthermore, the material exhibits excellent cycling stability, retaining 82.0% of its specific capacitance after 5000 GCD cycles at 1 A/g. This study demonstrates that ternary composite electrodes significantly enhance supercapacitor performance compared to binary composite systems.

Key words: graphene, manganese dioxide, polyaniline, composites, supercapacitors

CLC Number:

TB 383

Rusong YANG, Zhaoxia HOU, Wei LI, Haoran WANG, Xu GAO, Haibo LONG. Preparation of PANI/MnO₂/rGO-P ternary composite electrode and its application in supercapacitors[J]. Energy Storage Science and Technology, 2025, 14(7): 2791-2800.

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References 46

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样品名称	比电容/(F/g)	能量密度/(Wh/kg)	功率密度/(kW/kg)
PANI/MnO₂/rGO-P₃₀	532	15.3	0.49
PANI/MnO₂/rGO-P₆₀	450	14.1	0.52
PANI/MnO₂/rGO-P₇₅	635	17.5	0.45
PANI/MnO₂/rGO-P₉₀	590	20.0	0.49

样品名称	比电容/(F/g)	能量密度/(Wh/kg)	功率密度/(kW/kg)	比电容保持率/%
rGO-P	265(0.5A/g)	8.62	0.31	91.5(5000次循环)
PANI/MnO₂	499(0.5A/g)	15.6	0.52	74.0(5000次循环)
PANI/MnO₂/rGO-P₇₅	635(0.5A/g)	17.5	0.45	82.0(5000次循环)

样品名称	合成方法	比电容/(F/g)	比电容保持率/%	文献来源
PANI/GN	原位聚合法	468.5(0.1 A/g)	84.9(0.1 A/g 1000次循环)	[39]
NSGP	水热法	492(1 A/g)	71.0(1 A/g 1000次循环)	[40]
RGO-PANI	水热法	956(1 A/g单电极)	73.8(10 A/g 10000次循环)	[41]
GP-P	界面聚合法	135(1 A/g)	95(2 A/g 10000次循环)	[42]
PANP/RGO	界面聚合法	350(0.5 A/g)	98.5(0.5 A/g 1000次循环)	[43]
H-RGO-MnO₂	原位复合法	270.6(0.5 A/g)	96(5 A/g 13000次循环)	[44]
RGO/δ-MnO₂	螯合法	322(1 A/g)	99.6(5 A/g 1000次循环)	[45]
PANI/MnO₂-1	原位聚合法	2318(0.2 A/g)	60.81(0.2 A/g 100次循环)	[46]
PANI/MnO₂/rGO-P₇₅	原位聚合法	635(0.5 A/g)	82.0(1 A/g 5000次循环)	本文

Preparation of PANI/MnO₂/rGO-P ternary composite electrode and its application in supercapacitors

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