Fabrication and electrochemical performances of porous carbon nanotubes/polyaniline-modified carbon nanotube fiber

doi:10.12028/j.issn.2095-4239.2018.0107

Abstract

Abstract: A porous carbon nanotube (CNT) network was deposited on the surface of carbon nanotube fibers (CNF) by low-potential electrophoretic deposition, and then a layer of polyaniline (PANI) was electrochemically deposited on the surface of the CNT-decorated carbon nanotube fiber to form a core-sheathed structure of three-dimensional porous CNF/CNT/PANI fiber electrode material. Scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Raman spectroscopy were used to characterize the morphology and microstructure of the electrode material surface. An electrochemical workstation was used to measure the electrochemical performances. The experiment results showed the porous CNTs framework provided more active sites for the redox reaction of PANI, while the PANI can immobilize the pre-deposited CNTs structure. The areal specific capacitance of the electrode modified with CNTs and PANI reached 77.28 mF·cm^-2 at the current density of 1 mA·cm^-2. Besides, a symmetrical all-solid-state flexible supercapacitor was prepared by using polydimethylsiloxane (PDMS) thin film as the substrate and PVA-H₃PO₄ as the electrolyte, and the areal specific capacitance achieved 61.25 mF·cm^-2 at the current density of 0.25 mA·cm^-2. After 4000 cycles of charge/discharge, the capacitance value remains 80%, and two capacitors in series can light up a 1.8 V LED bulb.

Key words: carbon nanotube, electrophoretic deposition, polyaniline, cycling stability, flexible supercapacitor

CLC Number:

TQ028.8

LIU Jiahua, XU Xiaoying, CHEN Dazhu, HONG Jiaoling, MENG Xiao, OUYANG Xing, TANG Jiaoning. Fabrication and electrochemical performances of porous carbon nanotubes/polyaniline-modified carbon nanotube fiber[J]. Energy Storage Science and Technology, 2018, 7(6): 1226-1232.

References

[1] LIU W, SONG M S, KONG B, et al. Flexible and stretchable energy storage:Recent advances and future perspectives[J]. Advanced Materials, 2017, 29 (1):1603436.
[2] YANG Z, DENG J, CHEN X, et al. A highly stretchable, fiber-shaped supercapacitor[J]. Angewandte Chemie, 2013, 125 (50):13695-13699.
[3] 张熙悦, 张昊喆, 林子琦, 等. 基于碳材料的可伸缩型超级电容器的研究进展[J]. 中国科学:材料科学, 2016, 59 (6):475-494. ZHANG Xiyue, ZHANG Haozhe, LIN Ziqi, et al. Recent advances and challenges of stretchable supercapacitors based on carbon materials[J]. Science China Materials, 2016, 59 (6):475-494.
[4] YU J, WANG M, XU P, et al. Ultrahigh-rate wire-shaped supercapacitor based on graphene fiber[J]. Carbon, 2017, 119:332-338.
[5] WANG G, ZHANG L, ZHANG J. A review of electrode materials for electrochemical supercapacitors[J]. Cheminform, 2012, 41 (2):797-828.
[6] 叶星柯, 周乾隆, 万中全, 等. 柔性超级电容器电极材料与器件研究进展[J]. 化学通报, 2017, 80 (1):10-33. YE Xingke, ZHOU Qianlong, WAN Zhongquan, et al. Research progress in electrode materials and devices of flexible supercapacitors[J]. Chemistry Bulletin, 2017, 80 (1):10-33.
[7] JOST K, DION G, GOGOTSI Y. Textile energy storage in perspective[J]. Journal of Materials Chemistry A, 2014, 2 (28):10776-10787.
[8] SUN J, HUANG Y, SEA Y N S, et al. Recent progress of fiber-shaped asymmetric supercapacitors[J]. Materials Today Energy, 2017, 5:1-14.
[9] LU W, ZU M, BYUN J H, et al. State of the art of carbon nanotube fibers:Opportunities and challenges[J]. Advanced Materials, 2012, 24 (14):1805-1833.
[10] YU J, WANG L, LAI X, et al. A durability study of carbon nanotube fiber based stretchable electronic devices under cyclic deformation[J]. Carbon, 2015, 94:352-361.
[11] SNOOK G A, KAO P, BEST A S. Conducting-polymer-based supercapacitor devices and electrodes[J]. Journal of Power Sources, 2011, 196 (1):1-12.
[12] WANG K, MENG Q, ZHANG Y, et al. High-performance two-ply yarn supercapacitors based on carbon nanotubes and polyaniline nanowire arrays[J]. Advanced Materials, 2013, 25 (10):1494-1498.
[13] YOU B, WANG L, YAO L, et al. Three dimensional N-doped graphene-CNT networks for supercapacitor[J]. Chemical Communications, 2013, 49 (44):5016-5018.
[14] BING D, LU X, YUAN C, et al. One-step electrochemical composite polymerization of polypyrrole integrated with functionalized graphene/carbon nanotubes nanostructured composite film for electrochemical capacitors[J]. Electrochimica Acta, 2012, 62 (1):132-139.
[15] ZENG S, CHEN H, CAI F, et al. Electrochemical fabrication of carbon nanotube/polyaniline hydrogel film for all-solid-state flexible supercapacitor with high areal capacitance[J]. Journal of Materials Chemistry A, 2015, 3 (47):23864-23870.
[16] SU F, MIAO M, NIU H, et al. Gamma-irradiated carbon nanotube yarn as substrate for high-performance fiber supercapacitors[J]. ACS Applied Materials & Interfaces, 2014, 6 (4):2553-2560.
[17] CAI Z, LI L, REN J, et al. Flexible, weavable and efficient microsupercapacitor wires based on polyaniline composite fibers incorporated with aligned carbon nanotubes[J]. Journal of Materials Chemistry A, 2012, 1 (2):258-261.
[18] ZHANG L, HUANG D, HU N, et al. Three-dimensional structures of graphene/polyaniline hybrid films constructed by steamed water for high-performance supercapacitors[J]. Journal of Power Sources, 2017, 342:1-8.
[19] FU Y, CAI X, WU H, et al. Fiber supercapacitors utilizing pen ink for flexible/wearable energy storage[J]. Advanced Materials, 2012, 24 (42):5713-5718.
[20] ZHOU Z, WU X F, HOU H. Electrospun carbon nanofibers surface-grown with carbon nanotubes and polyaniline for use as high-performance electrode materials of supercapacitors[J]. RSC Advances, 2014, 4 (45):23622-23629.
[21] XIAO X, DING T, YUAN L, et al. WO_3-x/MoO_3-x core/shell nanowires on carbon fabric as an anode for all-solid-state asymmetric supercapacitors[J]. Advanced Energy Materials, 2012, 2 (11):1328-1332.