储能科学与技术 ›› 2025, Vol. 14 ›› Issue (7): 2791-2800.doi: 10.19799/j.cnki.2095-4239.2025.0036

• 第十三届储能国际峰会暨展览会专辑 • 上一篇    下一篇

PANI/MnO2/rGO-P三元复合电极的制备及在超级电容器中的应用

杨儒松(), 侯朝霞(), 李伟, 王颢然, 高旭, 龙海波   

  1. 沈阳大学机械工程学院,辽宁省微纳材料研究与开发重点实验室,辽宁 沈阳 110044
  • 收稿日期:2025-01-08 修回日期:2025-02-12 出版日期:2025-07-28 发布日期:2025-07-11
  • 通讯作者: 侯朝霞 E-mail:yrs15942221692@163.com;Luckyxia2007@126.com
  • 作者简介:杨儒松(2000—),男,硕士研究生,研究方向为储能材料,E-mail:yrs15942221692@163.com
  • 基金资助:
    国家自然科学基金面上项目(51472166)

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

Rusong YANG(), Zhaoxia HOU(), Wei LI, Haoran WANG, Xu GAO, Haibo LONG   

  1. School of Mechanical Engineering, Shenyang University, Key Laboratory of Micro-Nano Materials Research and Development of Liaoning Province, Shenyang 110044, Liaoning, China
  • Received:2025-01-08 Revised:2025-02-12 Online:2025-07-28 Published:2025-07-11
  • Contact: Zhaoxia HOU E-mail:yrs15942221692@163.com;Luckyxia2007@126.com

摘要:

通过控制合成条件制备出片层状氮掺杂还原氧化石墨烯(rGO-P),在此基础上将聚苯胺(PANI)/MnO2管状赝电容材料附着层间,采用两步复合法获得PANI/MnO2/rGO-P三元复合材料;利用X射线衍射技术(XRD)、扫描电子显微技术(SEM)和能量色散X射线谱(EDS)等对其进行微观形貌和结构表征;利用循环伏安法(CV)、恒流充放电(GCD)以及交流阻抗(EIS)等测试手段对三元复合材料的电化学性能进行了分析。电化学测试结果表明,在0.5 A/g的电流密度下,PANI/MnO2/rGO-P75的比电容高达635 F/g,当功率密度为0.45 kW/kg时,能量密度达到17.5 Wh/kg,综合性能要优于相同电流密度下的rGO-P和PANI/MnO2。此外,在1 A/g的电流密度下,PANI/MnO2/rGO-P75恒流充放电5000次循环后,仍有82.0%的电容保持率。本文制备的三元复合电极材料与二元复合的电极材料相比在提升超级电容器的性能方面效果显著。

关键词: 石墨烯, 二氧化锰, 聚苯胺, 复合材料, 超级电容器

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

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