OPEN ACCESS
Functionalization of multiwalled carbon nanotubes (MWNTs) are proceeded with cold plasma generated in N2 and air atmos-phere. X-ray photoelectron spectroscope (XPS) shows that the nitrogen and/or oxygen elements are incorporated into MWNTs. The total nitrogen contents are approximately equal in N2 and air atmospheres, while oxygen content is increased significantly in air atmosphere, the species and content of the functional groups depend on the applied gases. Transmission electron microscope (TEM) shows that the morphology of functionalized MWNTs is almost the same to pristine MWNTs, although functional groups and defects increase. The electro-chemical experiments results demonstrate that introduction of functional groups enhance the pseudocapacitance, while the cyclic stability of the functionalized MWNTs is as well as the pristine MWNTs.
Cold plasma, Multiwalled carbon nanotubes, Functionalization, Supercapacitor
This work was supported by Guangxi Natural Science Founda-tion (No. 2016GXNSFAA380107 and 2018GXNSFAA281184) and the funding from Key Lab of New Processing Technology for Nonferrous Metals & Materials Ministry of Education and Featured Materials and Collaborative Innovation Center for Exploration of Hidden Nonferrous Metal Deposits and Development of New Ma-terials in Guangxi.
[1] Z.B. Yang, J.Ren, Z.T. Zhang, et al., Chem. Rev., (2015),115, pp. 5159-5223.
[2] T.Morishita, M. Matsushita, Y.Katagiri, et al., Carbon, (2010),48, pp. 2308-2316.
[3] L. Mao, K. Zhang, H.S.O. Chan,et al., J. Mater. Chem., (2012), 22, pp. 80-85.
[4] J. Liang, Y. Jiao, M. Jaroniec,et al., Angew. Chem., (2012), 124, pp.11664-11668.
[5] Z.B. Tian, C. Liu, Q.Y. Li,et al., Appl. Catal. A : General, (2015), 506, pp. 134-142.
[6] T.X. Shang, X.X. Cai, X.J. Jin,et al., RSC Adv., (2015), 5, pp. 16433-16438.
[7] X.D. Ren, J.Z. Zhu, F.M. Du, et al., J. Phys. Chem. C, (2014), 118, pp. 22412−22418.
[8] Q.H.Guo, D. Zhao, S.W. Liu, et al., Electrochim. Acta, (2014), 138, pp. 318-324.
[9] K. Suenaga, M.P. Johansson, N. Hellgren, et al., Chem. Phys. Lett., (1999), 300, pp. 695-700.
[10] H. Liu, Y. Zhang, R.Y. Li, Carbon, (2010), 48, pp. 1498-1507.
[11] N.Gavrilov, I.A.Pašti, M.Vujkovic, Carbon, (2012), 50, pp. 3915-3927.
[12] Q. Liu, Z.H. Pu, C. Tang,et al., Electrochem. Commun, (2013), 36, pp. 57-61.
[13] F. Xu, M. Minniti, P. Barone,et al., Carbon, (2008), 46, pp. 1489-1496.
[14] J.Y. Yook, J. Jun, S.Kwak, et al., Appl. Surf. Sci., (2010), 256, pp. 6941-6944.
[15] F.Poncin-Epaillard, J.C.Brosse, T.Falher, Macromolecules, (1997), 30, pp. 4415-4420.
[16] V.K. Abdelkader., S. Scelfo, C. García-Gallarín, et al., J. Phys. Chem. C, (2013), 117, pp. 16677-16685.
[17] O. Chirila, M. Totolin, G. Cazacu, et al., Ind. Eng. Chem. Res., (2013), 52, pp. 13264-13271.
[18] Z.H.Luo, L.H. Zhu, Y.F. Huang, et al., Synth. Met., (2013), 175, pp. 88-96.
[19] S.B. Wang, C.L. Xiao, Y.L. Xing, et al., J .Mater. Chem. A, (2015), 3, pp. 6742-6746.
[20] M.Vujković,N.Gavrilov, I.A. Pašti, et al., Carbon, (2008), 64, pp. 472-486.
[21] H.L. Wang, Q.L. Hao, X.J. Yang, et al., ACS Appl. Mater. Interfaces, (2010), 2, pp. 821-828.
[22] H. Sjöström, S. Stafström, M. Boman, et al., Phys. Rev. Lett., (1995), 75, pp. 1336-1339.
[23] H.Y. Liu, H.H. Song, X.H. Chen, et al., J. Power Sources, (2015), 28, pp. 5303-309.
[24] W. Fan, Y.E. Miao, L.S. Zhang, et al., RSC Adv., (2015), 5, pp. 31064- 31073.
[25] S.L. Candelaria, B.B. Garcia, D. Liu, et al., J. Mater. Chem., (2012), 22, pp. 9884–9889.
[26] J. Zhao, H.W. Lai, Z.Y. Lyu, Adv. Mater., (2015), 27, pp. 3541-3545.