Stochastic model of lithium ion conduction in poly(ethylene oxide)

L. Gitelman*, A. Averbuch, M. Nathan, Z. Schuss, D. Golodnitsky

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We develop, analyze, and simulate a physical model of Li+ -ion conduction inside polyethylene oxide (PEO) helical tubes, which are the solvent of LiI salt. The current is due to diffusion and electric interactions with a permanent external field, the PEO charges, and ion-ion interactions. Potential barriers are created in the PEO by loops in structure. We calculate the energy of configurations of one or two lithium ions in the loop and derive an explicit expression for the activation energy. We use Kramers' formula to calculate the conductivity as function of mechanical stretching, which lowers the barrier and causes an exponential rise in the output conductivity.

Original languageEnglish
Article number064318
JournalJournal of Applied Physics
Issue number6
StatePublished - 2010


FundersFunder number
United States-Israel Binational Science Foundation
Tel Aviv University


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