化工新型材料

化工新型材料 ›› 2026, Vol. 54 ›› Issue (3) : 130-136. DOI: 10.19817/j.cnki.issn1006-3536.2026.03.037

科学研究

PAC@MnO₂纳米片阵列的制备及电化学研究

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Preparation and electrochemical performance study of PAC@MnO₂ nanosheet arrays

Ren Shijie¹, Wei Minlv¹, Jiang Yajuan¹, Xu Chunyu¹, Lei Zaohui¹, Zhang Xiuyun¹, Zhu Guisheng¹, Zhao Yunyun¹, Xu Huarui^1,2

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Received		Published
2025-04-03		2026-03-20
Issue Date	Revised Date
2026-03-16	2025-04-03

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摘要

以活性炭为基底,采用水热法在活性炭表面上均匀地生长了MnO₂纳米片阵列核壳结构。利用X射线衍射(XRD)、扫描电镜(SEM)和X射线能谱(XPS)分别对材料结构和形貌进行了表征,并使用循环伏安(CV)、恒流充放电(CP)和交流阻抗(EIS)等测试手段研究了材料的电化学性能。结果表明:多孔活性炭@MnO₂(PAC@MnO₂)在1A/g电流密度下,比电容高达1450.2F/g,性能远大于商用MnO₂。此外,由PAC@MnO₂复合材料和PAC材料制成的ASC超级电容器在工作功率密度为784.5W/kg时,能量密度达到45Wh/kg,5000次循环后仍能保持85.6%的容量,并具有0～1.6V的宽电位窗口。由于活性炭具有导电性好与比表面积大的优点,PAC@MnO₂复合电极克服了MnO₂的一些固有缺点,并显示出成本效益,低成本生产和卓越储能性能的结合使这种混合器件成为先进电子设备可靠电源的有力候选者。

Abstract

The core-shell structures of MnO₂ nanosheet arrays were uniformly grown on the surface of activated carbon by hydrothermal method using activated carbon as a substrate.The structure and morphology of the materials were characterized using X-ray diffraction (XRD),scanning electron microscopy (SEM),and X-ray spectroscopy (XPS),respectively,and the electrochemical properties of the materials were investigated using cyclic voltammetry (CV),constant-current charge/discharge (CP),and alternating current impedance (EIS) tests.The results showed that the specific capacitance of porous activated carbon@MnO₂ (PAC@MnO₂) was as high as 1450.2F/g at 1A/g current density,which was much higher than that of commercial MnO₂.In addition,the ASC supercapacitor made of PAC@MnO₂ composite and PAC material achieved an energy density of 45Wh/kg at an operating power density of 784.5W/kg,maintained 85.6% of its capacity after 5000 cycles,and had a wide potential window of 0～1.6V.Due to the advantages of good electrical conductivity and large specific surface area of activated carbon,the prepared PAC@MnO₂ composite electrodeovercame some of the inherent drawbacks of MnO₂ and exhibited cost-effectiveness.The combination of low-cost production and excellent energy storage performance made this hybrid device as a strong promising candidate for a reliable power source for advanced electronic devices.

关键词

多孔炭 / 二氧化锰纳米片 / 复合电极材料 / 电化学性能 / 超级电容器

Key words

porous carbon / manganese dioxide nanosheets / composite electrode material / electrochemical performance / supercapacitor

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PAC@MnO₂纳米片阵列的制备及电化学研究[J]. 化工新型材料, 2026, 54(3): 130-136 DOI:10.19817/j.cnki.issn1006-3536.2026.03.037

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参考文献

原文顺序 | 出版日期 | 本文引用

[1] Amiri A,Bruno A,Polycarpou A.Configuration-dependent stretchable all-solid-state supercapacitors and hybrid supercapacitors[J].Carbon Energy,2023,5:e320.
[2] Cheng L,Zhai Q,Chen S,et al.Component-tunable hierarchical flower-shaped bimetallic zinc-cobalt selenides for high-performance hybrid supercapacitor[J].Journal of Energy Storage,2021,36:102374.
[3] Li J,Zou Y,Xiang C,et al.Osmanthus fragrans-derived N-doped porous carbon for supercapacitor applications[J].Journal of Energy Storage,2021,42:103017.
[4] 冯准.基于石墨烯电极的埃洛石/聚苯胺超高柔性复合电极[J].储能科学与技术,2023,12(6):1794-1803.
[5] 王跃迪,仇中柱,吴渺,等.多孔NiMoO₄/NiCo₂S₄复合材料的制备及其电化学性能[J].储能科学与技术,2023,12(4):1034-1044.
[6] Jiang J X,Yao L,Peng H,et al.High-performance zinc-ion hybrid supercapacitor from Guilin Sanhua liquor lees-derived carbon materials[J].ACS Applied Materials & Interfaces,2024,16:22102-22112.
[7] Kong S Y,Jin B B,Quan X,et al.MnO₂ nanosheets decorated porous active carbon derived from wheat bran for high-performance asymmetric supercapacitor[J].Journal of Electroanalytical Chemistry,2019,850:113412.
[8] Dang W H,Dong C J,Zhang Z F,et al.Self-grown MnO₂ nanosheets on carbon fiber paper as high-performance supercapacitors electrodes[J].Electrochimica Acta,2016,217:16-23.
[9] Gu Y H,Xu D,Chen S Y,et al.In situ growth of MnO₂ nanosheets on a graphite flake as an effective binder-free electrode for high-performance supercapacitors[J].ACS Omega,2022,7:48320-48331.
[10] Han Y,Huynh H V.Pyrazolin-4-ylidenes:a new class of intriguing ligands[J].Dalton Trans,2011,40:2141-2147.
[11] Fan L K,Zhao J H,Jing F Y,et al.Fabrication of oxygen-vacancy abundant MnO₂ nanowires@NiMn_xO_y-δ nanosheets core-shell heterostructure for capacity supercapacitors[J].Journal of Energy Storage,2022,52:104845.
[12] Fei M J,Zhang R P,Li L,et al.Epitaxial growth of MnFe₂O₄ nanosheets arrays for supercapacitor[J].Electrochimica Acta,2021,368:137586.
[13] Zhu Q C,Zhao D Y,Cheng M Y,et al.A new view of supercapacitors:integrated supercapacitors[J].Advanced Energy Materials,2019,9:1901081.
[14] Sari Fi N I,Lin K C,Ting J M.Mn(OH)₂-containing Co(OH)₂/Ni(OH)₂ core-shelled structure for ultrahigh energy density asymmetric supercapacitor[J].Applied Surface Science,2022,576:151805.
[15] Umar A,Raut S D,Ibrahim A A,et al.Perforated Co₃O₄ nanosheets as high-performing supercapacitor material[J].Electrochimica Acta,2021,389:138661.
[16] Yin X M,Li H J,Yuan R M,et al.Ni Co LDH nanosheets grown on MOF-derived Co₃O₄ triangle nanosheet arrays for high-performance supercapacitor[J].Journal of Materials Science & Technology,2021,62:60-69.
[17] Zhang N,Ding Y H,Zhang J Y,et al.Construction of MnO₂ nanowires@Ni_1-xCo_xO_y nanoflake core-shell heterostructure for high performance supercapacitor[J].Journal of Alloys and Compounds,2017,694:1302-1308.
[18] Wang H Y,Xiao F X,Yu L,et al.Hierarchical α-MnO₂ nanowires@Ni_1-xMn_xO_y nanoflakes core-shell nanostructures for supercapacitors[J].Small,2014,10:3181-3186.
[19] Zhang X Y,Zhang Z Q,Sun S G,et al.Hierarchical 3D NiFe₂O₄@MnO₂ core-shell nanosheet arrays on Ni foam for high-performance asymmetric supercapacitors[J].Dalton Transactions,2018,47:2266-2273.
[20] Zhang N,Xu C,Wang H,et al.Assembly of the hierarchical MnO₂@NiCo₂O₄ core-shell nanoflower for supercapacitor electrodes[J].Journal of Materials Science:Materials in Electronics,2021,32:1787-1799.
[21] 姜占洋,侯朝霞,王晓慧,等.核壳结构MnO₂@NiO复合材料的制备及电化学性能研究[J].化工新型材料,2025,46(11):1006-3536.
[22] Li J J,Hu B,Nie P F,et al.Fe-regulated δ-MnO₂ nanosheet assembly on carbon nanofiber under acidic condition for high performance supercapacitor and capacitive deionization[J].Applied Surface Science,2021,542:148715.
[23] Mao C P,Liu S G,Pang L,et al.Ultrathin MnO₂ nanosheets grown on fungal conidium-derived hollow carbon spheres as supercapacitor electrodes[J].RSC Advances,2016,6:5184-5191.
[24] 叶仪鹏,徐洋洋,李净珊,等.超级电容器用NiS/NSCNF复合材料的制备及其性能研究[J].化工新型材料,2025,DOI:10.19817/j.cnki.issn.1006-3536.2025.08.001.
[25] Gao H Y,Xiang J J,Cao Y.Controlled synthesis of MnO₂ nanosheets vertically covered FeCo₂O₄ nanoflakes as a binder-free electrode for a high-power and durable asymmetric supercapacitor[J].Nanotechnology,2017,28:235401.
[26] Rabani I,Younus A,Patil S,et al.Fabrication of Fe₃O₄-incorporated MnO₂ nanoflowers as electrodes for enhanced asymmetric supercapacitor performance[J].Dalton Transactions,2022,51:14190-14200.