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Lithium dendrite inhibition on post-charge anode surface: The kinetics role

  • Asgliar Aryanfar
  • , Tao Cheng
  • , Boris V. Merinov
  • , William A. Goddard
  • , Agustin J. Colussi
  • , Michael R. Hoffmann
  • California Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We report experiments and molecular dynamics calculations on the kinetics of electrodeposited lithium dendrites relaxation as a function of temperature and time We found that the experimental average length of dendrite population decays via stretched exponential functions of time toward limiting values that depend inversely on temperature. The experimental activation energy derived from initial rates as Ea~ 6-7 kcal/mole, which is closely matched by MD calculations, based on the ReaxFF force field for metallic lithium. Simulations reveal that relaxation proceeds in several steps via increasingly larger activation barriers. Incomplete relaxation at lower temperatures is therefore interpreted a manifestation of cooperative atomic motions into discrete topologies that frustrate monotonie progress by 'caging'.

Original languageEnglish
Title of host publicationMechanics of Energy Storage and Conversion - Batteries, Thermoelectrics and Fuel Cell
EditorsJiangyu Li, Haleh Ardebili, Kaiyang Zeng, John Huber
PublisherMaterials Research Society
Pages31-39
Number of pages9
ISBN (Electronic)9781510826298
DOIs
Publication statusPublished - 1 Jan 2015
Externally publishedYes
Event2015 MRS Spring Meeting - San Francisco, United States
Duration: 6 Apr 201510 Apr 2015

Publication series

NameMaterials Research Society Symposium Proceedings
Volume1774
ISSN (Print)0272-9172

Conference

Conference2015 MRS Spring Meeting
Country/TerritoryUnited States
CitySan Francisco
Period6/04/1510/04/15

Keywords

  • Activation Energy
  • Annealing.
  • Kinetics
  • Lithium Dendrites

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