A study of electrochemical kinetics of lithium ion in organic electrolytes

Shung Ik Lee, Un Ho Jung, Yun Sung Kim, Myung Hwan Kim, Dong June Ahn, Hai Soo Chun

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    75 Citations (Scopus)

    Abstract

    Limiting current densities equivalent to the transport-controlling step oflithium ions in organic electrolytes were measured by using a rotating disk electrode (RDE). The diffusion coefficients of lithium ion in the electrolyte of PC/LiClO4, EC : DEC/LiPF6 and EC: DMC/LiPF6 were determined by the limiting current density data according to the Levich equation. The diffusion coefficients increased in the order of PC/LiClO 4<EC: DEC/LiPF6<EC : DMC/ LiPF6 with respect to molar concentration oflithium salt. The maximum value of diffusivity was 1.39× 10-5cm2/s for 1 M LiPF6 in EC: DMC=1:1. Exchange current densities and transfer coefficients of each electrolyte were determined according to the Butler-Volmer equation.

    Original languageEnglish
    Pages (from-to)638-644
    Number of pages7
    JournalKorean Journal of Chemical Engineering
    Volume19
    Issue number4
    DOIs
    Publication statusPublished - 2002 Jul

    Bibliographical note

    Funding Information:
    supported by Korea University Post-Dec. Grant

    Keywords

    • Diffusion coefficient
    • Electrolyte
    • Limiting current density
    • Lithium ion batteries
    • RDE

    ASJC Scopus subject areas

    • General Chemistry
    • General Chemical Engineering

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