期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 5, 期 37, 页码 19934-19942出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ta06135h
关键词
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资金
- National Key Basic Research (973) Program of China [2014CB932400]
- Shenzhen Technical Plan Projects [JCYJ20160301154114273]
- CERC-CVC [2016YFE0102200]
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.
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