石墨烯/聚苯胺/MnO<sub>2</sub>的制备及其电容性能

摘要

采用π-π共轭吸附法结合液相共沉淀法制备了石墨烯/聚苯胺/MnO₂三元复合物,并考察了聚苯胺(PANI)的含量及其复合方式对复合物性能的影响。SEM和XRD结果表明,适量PANI的加入能有效地改善MnO₂的分散性,并减小其粒径,增大其孔隙率;循环伏安和交流阻抗测试结果表明,当PANI的质量分数为4%时三元复合物的比电容值较高,且循环稳定性很好,经3 000次循环后比电容仅减小到原始值的92.7%。

	Service

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	Email Alert
	RSS
	作者相关文章
	张竞赛
	杜萍
	张晶

关键词：石墨烯聚苯胺 MnO₂ 超级电容器

Abstract：

A ternary composite of graphene/PANI/MnO₂ was successfully prepared by π-π conjugate adsorption method followed by liquid-phase coprecipitation method. The effect of PANI to ternary composite was discussed. SEM and XRD results show that the addition of suitable amount of PANI can effectively improve the dispersion of MnO₂, decrease the particle size and increase the porosity. Cyclic voltammetry and AC impedance method show that ternary composite with suitable amount of PANI has a higher specific capacitance value and a very good cyclic stability, even after 3 000 cycle, the capacitance is still 92.7% of the original value.

Keywords： graphene； PANI； MnO₂； super capacitors

Received 2014-03-04;

Fund:

天津市自然科学基金项目(11CYBCJC07800)。

Corresponding Authors: 张晶,E-mail:Christy_zj@sohu.com。 Email: Christy_zj@sohu.com

About author: 张竞赛(1987-),女,硕士生,现从事超级电容器方面的研究。

引用本文:

张竞赛, 杜萍, 张晶.石墨烯/聚苯胺/MnO₂的制备及其电容性能[J]. 化学工业与工程, 2016,33(2): 58-64

Zhang Jingsai, Du Ping, Zhang Jing.Preparation and Capacitance Performance of Graphene/PANI/MnO₂ Composite[J]. Chemcial Industry and Engineering, 2016,33(2): 58-64

[1] Li Y, Zhao N, Shi C, et al. Improve the supercapacity performance of MnO₂-decorated graphene by controlling the oxidization extent of graphene[J].The Journal of Physical Chemistry C,2012,116: 25 226-25 232
[2] Yang W,Gao Z,Wang J, et al. Synthesis of reduced graphenenanosheet/urchin-like manganese dioxide composite and high performance as supercapacitor electrode[J].ElectrochimicaActa,2012,69: 112-119
[3] Li Q, Liu J, Zou J, et al. Synthesis and electrochemical performance of multi-walled carbon nanotube/polyaniline/MnO₂ ternary coaxial nanostructures for supercapacitors[J].Journal of Power Sources,2011, 196: 565-572
[4] Zheng Y, Du Q, He M,et al.Synthesis and electrochemical properties of graphite oxide/MnO₂/conducting polymer ternary composite for supercapacitor[J].Micro & Nano Letters, 2012, 7(8):778-781
[5] Chen Y, Zhang Y, Geng D,et al. One-Pot synthesis of MnO₂/graphene/carbon nanotube hybrid by chemical method[J].Carbon,2011,49: 4 434-4 442
[6] Yuan L, Lu X, Xiao X, et al.Flexible solid-state supercapacitors based on carbon nanoparticles/MnO₂nanorods hybrid structure[J].ACS Nano, 2012, 6 (1): 656-661
[7] Liu J, Fan L, Qu X. Low temperature hydrothermal synthesis of nano-sized manganese oxide for supercapacitors[J]. Electrochimica Acta, 2012,66:302-305
[8] Jiang H,Zhao T, Ma J, et al.Ultrafine manganese dioxide nanowire network for high-performance supercapacitors[J].Chem Commu, 2011, 47: 1 264-1 266
[9] Chen Y, Hsu Y, Lin Y, et al. Highly flexible supercapacitors with manganese oxide nanosheet/carbon cloth electrode[J]. Electrochimica Acta, 2011, 56: 7 124-7 130
[10] Zhou Y, Wu M. Single-Parameter quantum charge and spin pumping in armchair graphene nanoribbons[J]. Phys Rev B, 2012, 86:85 406-85 415
[11] Zhang Y, Sun Q, Xie X. The effect of disorder on the valley-dependent transport in zigzag graphene nanoribbons[J].Journal of Applied Physics, 2011, 109(12):123 718-123 724
[12] Zhang J, Ren L, Deng L, et al.Graphene-MnO₂ nanocomposite for high-performance asymmetrical electrochemical capacitor[J]. Materials Research Bulletin,2014,49:577-583
[13] Deng S, Sun D, Wu C, et al.Synthesis and electrochemical properties of MnO₂nanorods/graphene composites for supercapacitorapplications[J]. Electrochimica Acta, 2013, 111:707-712
[14] Cheng Q, Tang J, Ma J,et al.Graphene and nanostructured MnO₂ composite electrodes for supercapacitors[J].Carbon,2011,49:2 917-2 925
[15] Hummers W, Offeman R. Preparation of graphitic oxide[J]. J Am Chem Soc, 1958, 80(6):1 339-1 339
[16] Aleela M R,Ramaprabhu S. Nanocrystalline metal oxides dispersed multiwalled carbon nanotubes as supercapacitor electrodes[J]. J Phys Chem C,2007,111(21): 7 727-7 734
[17] Yan J, Wei T, Shao B, et al.Preparation of a graphenenanosheet/polyaniline composite with high specific capacitance[J].Carbon, 2010,48:487-493
[18] Yan J, Wei T, Fan Z, et al. Preparation of graphenenanosheet/carbon nanotube/polyaniline composite aselectrode material for supercapacitors[J].Journal of Power Sources, 2010, 195: 3 041-3 045
[19] Soudan P, Gaudet J, Guay D, et al. Electrochemical properties of ruthenium-based nanocrystalline materials as electrodes for supercapacitors[J].Chem Mater, 2002,14: 1 210-1 215
[20] Toupin M, Brousse T, BéLanger D. Influence of microstructure on the charge storage properties of chemically synthesized manganese dioxide[J].Chem Mater,2002,14: 3 946-3 952
[21] Bai H, Xu Y, Zhao L, et al. Non-Covalent functionalization of graphene sheets by sulfonatedpolyaniline[J].Chem Commun, 2009, 13(13): 1 667-1 669
[22] Wei W, Cui X, Chen W, et al. Improved electrochemical impedance response induced by morphological and structural evolution in nanocrystalline MnO₂electrodes[J]. Electrochimica Acta, 2009,54: 2 271-2 275
[23] Hsieh Y C, Lee K T, Lin Y P, et al. Investigation on capacity fading of aqueous MnO₂·nH₂O electrochemical capacitor[J]. Journal of Power Sources, 2008, 177: 660-664
[24] Devaraj S, Munichandraiah N. Electrochemical supercapacitor studies of nanostructured a-MnO₂ synthesized by microemulsion method and the effect of annealing[J]. Journal of The Electrochemical Society,2007,154 (2): A80-A88