Evaluation of the rate determining processes for LiFePO4 as cathode material in lithium-ion-batteries

J. Illig, T. Chrobak, D. Klotz, E. Ivers-Tiffée

Research output: Chapter in Book/Report/Conference proceedingConference contribution

20 Citations (Scopus)


Lithium iron phosphate is a promising cathode material for the use in lithium-ion batteries meeting the demands of good stability during cycling and safe operation due to reduced risk of thermal runaway. However, slow solid state diffusion and poor electrical conductivity reduce power capability. For further improvement, all rate determining electrode processes have to be quantified. Electrochemical impedance spectroscopy (EIS) has proven to be a powerful tool for the characterization of electrochemical systems. In recent publications (1,2), a physical interpretation for the impedance response of LiFePO 4/Li-cells was given and an equivalent circuit model was proposed. In this contribution, the proposed equivalent circuit is used to quantify the predominant electrode processes depending on temperature (0°C...30°C), SoC (10% ... 100%) and microstructure characteristics (porosity).

Original languageEnglish
Title of host publicationRechargeable Lithium and Lithium Ion Batteries
PublisherElectrochemical Society Inc.
Number of pages13
ISBN (Electronic)9781566778879
ISBN (Print)9781607682394
Publication statusPublished - 2010
Externally publishedYes
EventRechargeable Lithium and Lithium Ion Batteries - 218th ECS Meeting - Las Vegas, NV, United States
Duration: Oct 10 2010Oct 15 2010

Publication series

NameECS Transactions
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737


ConferenceRechargeable Lithium and Lithium Ion Batteries - 218th ECS Meeting
Country/TerritoryUnited States
CityLas Vegas, NV

All Science Journal Classification (ASJC) codes

  • Engineering(all)


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