High-power lithium batteries from functionalized carbon-nanotube electrodes

Seung Woo Lee, Naoaki Yabuuchi, Betar M. Gallant, Shuo Chen, Byeong Su Kim, Paula T. Hammond, Yang Shao-Horn

Research output: Contribution to journalArticle

736 Citations (Scopus)

Abstract

Energy storage devices that can deliver high powers have many applications, including hybrid vehicles and renewable energy. Much research has focused on increasing the power output of lithium batteries by reducing lithium-ion diffusion distances, but outputs remain far below those of electrochemical capacitors and below the levels required for many applications. Here, we report an alternative approach based on the redox reactions of functional groups on the surfaces of carbon nanotubes. Layer-by-layer techniques are used to assemble an electrode that consists of additive-free, densely packed and functionalized multiwalled carbon nanotubes. The electrode, which is several micrometres thick, can store lithium up to a reversible gravimetric capacity of 200mAhg 1 electrode while also delivering 100kWkg electrode 1 of power and providing lifetimes in excess of thousands of cycles, both of which are comparable to electrochemical capacitor electrodes. A device using the nanotube electrode as the positive electrode and lithium titanium oxide as a negative electrode had a gravimetric energy 5 times higher than conventional electrochemical capacitors and power delivery 10 times higher than conventional lithium-ion batteries.

Original languageEnglish
Pages (from-to)531-537
Number of pages7
JournalNature Nanotechnology
Volume5
Issue number7
DOIs
Publication statusPublished - 2010 Jul

Fingerprint

Carbon Nanotubes
Lithium batteries
lithium batteries
Carbon nanotubes
carbon nanotubes
Electrodes
electrodes
electrochemical capacitors
Lithium
Capacitors
lithium
lithium oxides
renewable energy
Multiwalled carbon nanotubes (MWCN)
Redox reactions
Titanium oxides
output
Hybrid vehicles
energy storage
titanium oxides

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Atomic and Molecular Physics, and Optics
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Lee, S. W., Yabuuchi, N., Gallant, B. M., Chen, S., Kim, B. S., Hammond, P. T., & Shao-Horn, Y. (2010). High-power lithium batteries from functionalized carbon-nanotube electrodes. Nature Nanotechnology, 5(7), 531-537. https://doi.org/10.1038/nnano.2010.116
Lee, Seung Woo ; Yabuuchi, Naoaki ; Gallant, Betar M. ; Chen, Shuo ; Kim, Byeong Su ; Hammond, Paula T. ; Shao-Horn, Yang. / High-power lithium batteries from functionalized carbon-nanotube electrodes. In: Nature Nanotechnology. 2010 ; Vol. 5, No. 7. pp. 531-537.
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Lee, SW, Yabuuchi, N, Gallant, BM, Chen, S, Kim, BS, Hammond, PT & Shao-Horn, Y 2010, 'High-power lithium batteries from functionalized carbon-nanotube electrodes', Nature Nanotechnology, vol. 5, no. 7, pp. 531-537. https://doi.org/10.1038/nnano.2010.116

High-power lithium batteries from functionalized carbon-nanotube electrodes. / Lee, Seung Woo; Yabuuchi, Naoaki; Gallant, Betar M.; Chen, Shuo; Kim, Byeong Su; Hammond, Paula T.; Shao-Horn, Yang.

In: Nature Nanotechnology, Vol. 5, No. 7, 07.2010, p. 531-537.

Research output: Contribution to journalArticle

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