Rapid fabrication of thick spray-layer-by-layer carbon nanotube electrodes for high power and energy devices

Sung Yeol Kim, Jinkee Hong, Reza Kavian, Seung Woo Lee, Md Nasim Hyder, Yang Shao-Horn, Paula T. Hammond

Research output: Contribution to journalArticle

64 Citations (Scopus)

Abstract

Rapid fabrication of layer-by-layer (LbL) electrodes is essential to expand their utility in energy storage applications. Herein, we address challenges in developing thick LbL electrodes of multi-wall carbon nanotubes (MWNTs) using conventional dip- and spray-LbL processes, and present a solution to overcome these challenges. The vacuum-assisted spray-LbL process using porous carbon substrates enabled a linear growth of LbL-MWNT electrodes with a 600 time decrease in their fabrication time. This result was attributed to the enhanced surface interactions between MWNTs and substrate via increased surface areas, enhanced capillary forces, physical entrapment in pores, and changes in hydrodynamic drag forces. Scanning electron microscopy (SEM) revealed high surface area carbon nanotube networks comprised of individual MWNT's. The spray MWNT electrodes delivered a high gravimetric energy of 100 W h kg-1 at high gravimetric power of 50 kW kg-1, which is higher than those of most carbon nanotube electrodes reported. Moreover, the spray MWNT electrodes delivered the highest energy capacity per unit area (up to 300 μW h cm -2 at 0.4 mW cm-2 among the LbL electrodes reported, and showed excellent retention of energy capacity up to 100 μW h cm-2 at high power capacity of 200 mW cm-2. These performance values are higher or comparable to the most advanced battery electrodes for high energy capacity per unit area.

Original languageEnglish
Pages (from-to)888-897
Number of pages10
JournalEnergy and Environmental Science
Volume6
Issue number3
DOIs
Publication statusPublished - 2013 Mar 1

Fingerprint

Carbon Nanotubes
spray
Carbon nanotubes
electrode
Fabrication
Electrodes
energy
carbon nanotube
Substrates
surface area
Energy storage
Drag
substrate
Carbon
Hydrodynamics
Vacuum
Scanning electron microscopy
drag
dip
hydrodynamics

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Pollution

Cite this

Kim, Sung Yeol ; Hong, Jinkee ; Kavian, Reza ; Lee, Seung Woo ; Hyder, Md Nasim ; Shao-Horn, Yang ; Hammond, Paula T. / Rapid fabrication of thick spray-layer-by-layer carbon nanotube electrodes for high power and energy devices. In: Energy and Environmental Science. 2013 ; Vol. 6, No. 3. pp. 888-897.
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Rapid fabrication of thick spray-layer-by-layer carbon nanotube electrodes for high power and energy devices. / Kim, Sung Yeol; Hong, Jinkee; Kavian, Reza; Lee, Seung Woo; Hyder, Md Nasim; Shao-Horn, Yang; Hammond, Paula T.

In: Energy and Environmental Science, Vol. 6, No. 3, 01.03.2013, p. 888-897.

Research output: Contribution to journalArticle

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