化工新型材料

化工新型材料 ›› 2026, Vol. 54 ›› Issue (5) : 106-111. DOI: 10.19817/j.cnki.issn1006-3536.2026.05.002

新材料与新技术

PANI/MnO₂纳米管复合材料的制备及其电化学性能研究

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Preparation and electrochemical properties of PANI/MnO₂ nanotube binary composites

Shi Jingqi, Hou Zhaoxia, Li Wei, Yang Rusong, Wang Haoran, Gao Xu

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Received
2025-05-08
Issue Date	Revised Date
2026-05-15	2025-05-08

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摘要

通过水热法合成MnO₂纳米线,以MnO₂纳米线为模板和氧化剂原位复合聚苯胺(PANI),制备了 PANI/MnO₂纳米管复合材料。采用X射线衍射仪、扫描电子显微镜和傅里叶变换红外光谱仪对复合材料的微观形貌和结构进行表征,利用循环伏安、恒流充放电以及交流阻抗等测试手段分析了复合材料的电化学性能。结果表明:苯胺与MnO₂纳米线摩尔比为1∶1.5、聚合反应时间为3h时合成的PANI/MnO₂-W_1∶1.5-3h复合材料形貌均匀,分散性较好,在电流密度0.5A/g条件下,该复合材料的比电容高达499F/g,当功率密度达到0.521kW/kg时,其能量密度保持在15.6Wh/kg。经过5000次恒流充放电循环后,该复合材料电容保持率为74%。PANI和MnO₂的协同效应有助于提升超级电容器的性能。

Abstract

MnO₂ nanowires were synthesized by hydrothermal method,and PANI/MnO₂-W nanotubular binary composites were successfully prepared by in-situ compounding polyaniline (PANI) with MnO₂ nanowires as template and oxidant.The microstructure and structure of the samples were characterized by XRD,SEM and FT-IR.The electrochemical performance of the composites was analyzed by cyclic voltammetry,galvanostatic charge-discharge and AC impedance.The results showed that when the molar ratio of aniline to MnO₂ nanowires was 1∶1.5 and the polymerization time was 3h,the synthesized PANI/MnO₂-W_1∶1.5-3h composite exhibited a uniform morphology and good dispersion.The composite achieved a high specific capacitance of 499F/g at a current density of 0.5A/g.When the power density reached 0.521kW/kg,the energy density remained at a high level of 15.6Wh/kg.In addition,the specific capacitance of the composite material remained 74% after 5000 constant current charge-discharge cycles.The synergistic effect of PANI and MnO₂ helped to improve the performance of supercapacitors.

关键词

二氧化锰 / 聚苯胺 / 复合材料 / 电化学性能

Key words

manganese dioxide / polyaniline / composites / electrochemical performance

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PANI/MnO₂纳米管复合材料的制备及其电化学性能研究[J]. 化工新型材料, 2026, 54(5): 106-111 DOI:10.19817/j.cnki.issn1006-3536.2026.05.002

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