Intercalated polyaniline nanosheets prepared from lyotropic liquid crystalline solutions and their capacitive performance

作者: Li Shi , Xiaodong Wu , Lude Lu , Xujie Yang , Xin Wang

DOI: 10.1016/J.SYNTHMET.2010.02.014

关键词:

摘要: Abstract Intercalated polyaniline (PANI) nanosheets, supported by sodium dodecyl sulfate (SDS), have been prepared in one step from discotic nematic lyotropic liquid crystal (LLC) solutions. The inter-lamellar distance was observed to be dependent strongly on the stirring situation during polymerization: an average of 3.4 nm is favorable for samples with and without preparation, while a shorter 1.4 nm preferable when system stirred only period addition ammonium persulfate (APS). Interestingly, all UV–vis, XPS, TGA elemental analysis experiments demonstrate clearly that PANIs this way were partially doped states, although these reactions carried out at non-acidic conditions. Such phenomenon can attributed doping process induced sulfuric acid, which produced situ polymerization. Furthermore, our exhibit high specific capacitance compared other chemically systems. In particularly, superior retention propriety (as as 86.7% current density 0.4–4.0 A g −1 ) available PANI time, indicating its great potential provide power density. short, indicate intercalated nanosheet structure molecular scale benefit improving supercapacitive performance corresponding electrode material supercapacitors.

参考文章(29)
Li Shi, Xiaodong Wu, Lude Lu, Xujie Yang, Xin Wang, Molecular mechanism for formation of polyaniline lamella from a lyotropic liquid crystal: an NMR study. Journal of Physical Chemistry B. ,vol. 113, pp. 2725- 2733 ,(2009) , 10.1021/JP9002824
Christelle Barthet, Steven P. Armes, Mohamed M. Chehimi, Carole Bilem, Maria Omastova, Surface characterization of polyaniline-coated polystyrene latexes Langmuir. ,vol. 14, pp. 5032- 5038 ,(1998) , 10.1021/LA980102R
Guang-Yu Zhao, Hu-Lin Li, Preparation of polyaniline nanowire arrayed electrodes for electrochemical supercapacitors Microporous and Mesoporous Materials. ,vol. 110, pp. 590- 594 ,(2008) , 10.1016/J.MICROMESO.2007.06.023
N. Gospodinova, P. Mokreva, L. Terlemezyan, Chemical oxidative polymerization of aniline in aqueous medium without added acids Polymer. ,vol. 34, pp. 2438- 2439 ,(1993) , 10.1016/0032-3861(93)90835-X
Gordon G. Wallace, Jun Chen, Attila J. Mozer, Maria Forsyth, Douglas R. MacFarlane, Caiyun Wang, Nanoelectrodes: energy conversion and storage Materials Today. ,vol. 12, pp. 20- 27 ,(2009) , 10.1016/S1369-7021(09)70177-4
Angaiah Subramania, Subbarao Lakshmi Devi, None, Polyaniline nanofibers by surfactant‐assisted dilute polymerization for supercapacitor applications Polymers for Advanced Technologies. ,vol. 19, pp. 725- 727 ,(2008) , 10.1002/PAT.1016
Oleg N. Kalugin, Vitaly V. Chaban, Valentin V. Loskutov, Oleg V. Prezhdo, Uniform diffusion of acetonitrile inside carbon nanotubes favors supercapacitor performance. Nano Letters. ,vol. 8, pp. 2126- 2130 ,(2008) , 10.1021/NL072976G
L. Q. Amaral, C. A. Pimentel, M. R. Tavares, J. A. Vanin, Study of a magnetically oriented lyotropic mesophase Journal of Chemical Physics. ,vol. 71, pp. 2940- 2945 ,(1979) , 10.1063/1.438696
Hao Zhang, Gaoping Cao, Zhiyong Wang, Yusheng Yang, Zujin Shi, Zhennan Gu, Tube-covering-tube nanostructured polyaniline/carbon nanotube array composite electrode with high capacitance and superior rate performance as well as good cycling stability Electrochemistry Communications. ,vol. 10, pp. 1056- 1059 ,(2008) , 10.1016/J.ELECOM.2008.05.007