Roll-to-roll synthesis of vertically aligned carbon nanotube electrodes for electrical double layer capacitors

Arcila-Velez M. R., Zhu J., Childress A., KARAKAYA M., Podila R., Rao A. M., ...Daha Fazla

NANO ENERGY, cilt.8, ss.9-16, 2014 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 8
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1016/j.nanoen.2014.05.004
  • Dergi Adı: NANO ENERGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.9-16
  • Anahtar Kelimeler: Roll-to-roll synthesis, Chemical vapor deposition, Vertically aligned carbon nanotubes, Supercapacitor, Ultracapacitor, GROWTH, ENERGY
  • Gazi Üniversitesi Adresli: Hayır

Özet

Research in carbon nanomaterials has seen tremendous growth in recent years; however, technological advances are limited by the lack of continuous and scalable synthesis methods. Here we present a scalable roll-to-roll process for synthesizing vertically-aligned multi-walled carbon nanotubes (VACNTs) on Al foil ribbons which are continuously drawn through a chemical vapor deposition (CVD) reactor operating at ambient pressure and a relatively low growth temperature (600 degrees C). Electrodes comprised of VACNT forests synthesized in this process are directly assembled into supercapacitor cells, which yield high power densities (1270 W/kg) and energy densities (11.5 Wh/kg). These devices exhibit excellent cycle stability with no loss in performance over more than a thousand cycles. (C) 2014 Elsevier Ltd. All rights reserved.