Toward lithium ion batteries with enhanced thermal conductivity

Bonil Koo, Pradyumna Goli, Anirudha V. Sumant, Paula Cecilia Dos Santos Claro, Tijana Rajh, Christopher S. Johnson, Alexander A. Balandin, Elena V. Shevchenko

Research output: Contribution to journalArticlepeer-review

43 Scopus citations

Abstract

As batteries become more powerful and utilized in diverse applications, thermal management becomes one of the central problems in their application. We report the results on thermal properties of a set of different Li-ion battery electrodes enhanced with multiwalled carbon nanotubes. Our measurements reveal that the highest in-plane and cross-plane thermal conductivities achieved in the carbon-nanotube-enhanced electrodes reached up to 141 and 3.6 W/mK, respectively. The values for in-plane thermal conductivity are up to 2 orders of magnitude higher than those for conventional electrodes based on carbon black. The electrodes were synthesized via an inexpensive scalable filtration method, and we demonstrate that our approach can be extended to commercial electrode-active materials. The best performing electrodes contained a layer of γ-Fe2O3 nanoparticles on carbon nanotubes sandwiched between two layers of carbon nanotubes and had in-plane and cross-plane thermal conductivities of ∼50 and 3 W/mK, respectively, at room temperature. The obtained results are important for thermal management in Li-ion and other high-power-density batteries.

Original languageEnglish (US)
Pages (from-to)7202-7207
Number of pages6
JournalACS nano
Volume8
Issue number7
DOIs
StatePublished - Jul 22 2014
Externally publishedYes

Keywords

  • CNT
  • Li-ion battery
  • thermal conductivity

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

Fingerprint

Dive into the research topics of 'Toward lithium ion batteries with enhanced thermal conductivity'. Together they form a unique fingerprint.

Cite this