Stacking up layers of polyaniline/carbon nanotube networks inside papers as highly flexible electrodes with large areal capacitance and superior rate capability. Issue 37 (13th September 2017)

• Record Type: Journal Article
• Authors: Dong, Liubing; Liang, Gemeng; Xu, Chengjun; Ren, Danyang; Wang, Jinjie; Pan, Zheng-Ze; Li, Baohua; Kang, Feiyu; Yang, Quan-Hong
• Is Part Of: Journal of materials chemistry. Volume 5:Issue 37(2017)
• Page Start: 19934
• Page End: 19942
• Publication Date: 2017-09-13
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c7ta06135h
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : A highly flexible paper electrode with large areal capacitance and superior rate capability was prepared. Abstract : Developing high-performance flexible film-like electrodes is still a primary task for the practical applications of wearable/portable planar supercapacitors. In this work, a facile and effective approach, i.e., stacking up layers of polyaniline (PANI)/carbon nanotube (CNT) composite networks inside air-laid papers, is proposed to fabricate highly flexible paper electrodes with large areal capacitance and superior rate capability. The layer-by-layer deposition of PANI/CNT networks endows the fabricated paper electrodes with high loading and uniform distribution of PANI; meanwhile, the good electrical conductivity and porous structure of these introduced PANI/CNT networks guarantee sufficient paths for electron movement and ion transportation in the electrodes. Consequently, when 4 layers of PANI/CNT networks (with optimal PANI content) are stacked inside papers, the areal capacitance of the prepared electrode is as high as 1506 mF cm −2 at a charge/discharge current of 10 mA cm −2 and 1298 mF cm −2 at 100 mA cm −2 ; the electrode also exhibits high flexibility and good cycling stability (with 82% capacitance retention after 11 500 charge/discharge cycles). These merits make our PANI/CNT/papers promising candidates for flexible planar supercapacitor electrodes. Besides, this work is believed to provide a new thought for producing high-loading and high-energy wearable/portable energy storage devices.