Superionic conductivity in the Li4C60 fulleride polymer

M. Riccò, M. Belli, M. Mazzani, D. Pontiroli, D. Quintavalle, A. Jánossy, G. Csányi

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

We report on the extraordinary superionic conductivity in the fulleride polymer Li4C60, a crystalline material with no disorder. Li7, NMR, and dc frequency dependent conductivity show uncorrelated ionic hopping across small energy barriers (ΔEa∼200meV) and an ionic conductivity of 10-2S/cm at room temperature, higher than in "standard" ionic conductors. Ab initio calculations of the molecular structure find intrinsic unoccupied interstitial sites that can be filled by Li+ cations in stoichiometric Li4C60 even at low temperatures. The low energy required for the occupation of these sites allows a sizable Li+ diffusion above 130 K. The results suggest novel application of lithium intercalated fullerides as electrodes in Li ions batteries.

Original languageEnglish
Article number145901
JournalPhysical Review Letters
Volume102
Issue number14
DOIs
Publication statusPublished - Apr 6 2009

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fullerides
conductivity
polymers
occupation
ion currents
electric batteries
interstitials
molecular structure
conductors
lithium
disorders
cations
nuclear magnetic resonance
electrodes
energy
room temperature
ions

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Riccò, M., Belli, M., Mazzani, M., Pontiroli, D., Quintavalle, D., Jánossy, A., & Csányi, G. (2009). Superionic conductivity in the Li4C60 fulleride polymer. Physical Review Letters, 102(14), [145901]. https://doi.org/10.1103/PhysRevLett.102.145901

Superionic conductivity in the Li4C60 fulleride polymer. / Riccò, M.; Belli, M.; Mazzani, M.; Pontiroli, D.; Quintavalle, D.; Jánossy, A.; Csányi, G.

In: Physical Review Letters, Vol. 102, No. 14, 145901, 06.04.2009.

Research output: Contribution to journalArticle

Riccò, M, Belli, M, Mazzani, M, Pontiroli, D, Quintavalle, D, Jánossy, A & Csányi, G 2009, 'Superionic conductivity in the Li4C60 fulleride polymer', Physical Review Letters, vol. 102, no. 14, 145901. https://doi.org/10.1103/PhysRevLett.102.145901
Riccò M, Belli M, Mazzani M, Pontiroli D, Quintavalle D, Jánossy A et al. Superionic conductivity in the Li4C60 fulleride polymer. Physical Review Letters. 2009 Apr 6;102(14). 145901. https://doi.org/10.1103/PhysRevLett.102.145901
Riccò, M. ; Belli, M. ; Mazzani, M. ; Pontiroli, D. ; Quintavalle, D. ; Jánossy, A. ; Csányi, G. / Superionic conductivity in the Li4C60 fulleride polymer. In: Physical Review Letters. 2009 ; Vol. 102, No. 14.
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