Journal
MATERIALS LETTERS
Volume 158, Issue -, Pages 119-122Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2015.06.008
Keywords
Carbon nanotubes; Cellulose nanofibers; TiO2; Nanocomposites; Electrical properties
Funding
- National Natural Science Foundation of China [31170514, 31370557]
- Graduate Cultivation Innovative Project of Jiangsu Province
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Doctoral Program of Higher Education [20113204110011]
- Analysis &Test Center of Nanjing Forestry University
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Foldable and free-standing electrodes were fabricated using the macroporous cellulose nanofibers (CNFs) as the scaffold. Multi-walled carbon nanotubes (MCNTs) wrapped around the CNFs as the conductive skin, while the elongated (tens of microns) TiO2 nanotubes (TNTs) were interpenetrated within the MCNTs and macroporous CNFs network. Electrochemical analysis indicated that the hybrid electrodes displayed a high discharge capacity of 62.5 mF/cm(2) at 10 mV/s and a good cyclability with a capacity loss 5% after 1000 cycles at 0.5 mA/cm(2). The hybrid electrodes possessed highly mechanical property and could be folded back and forth as a paper airplane without mechanical failure. Therefore the low-cost, light-weight and foldable electrodes can be well applied as foldable all-solid-state supercapacitors. (C) 2015 Elsevier B.V. All rights reserved.
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