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 language | English |
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Pages (from-to) | 638-644 |
Number of pages | 7 |
Journal | Korean Journal of Chemical Engineering |
Volume | 19 |
Issue number | 4 |
DOIs | |
Publication status | Published - 2002 Jul |
Keywords
- Diffusion coefficient
- Electrolyte
- Limiting current density
- Lithium ion batteries
- RDE
ASJC Scopus subject areas
- Chemistry(all)
- Chemical Engineering(all)