Electrolyte research near graphite particles by the feedback current using a Li metal probe

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The paper reports a home-made Li metal probe (LMP) to explore Li+ ion transport near graphite particles using the feedback current by the tip generation-substrate collection (TG-SC) mode of a scanning electrochemical microscope. Cyclic voltammetry revealed sufficient reproducibility and could measure the TG-SC feedback current over the charging graphite substrate. The graphite substrate at 0.0 V was imaged as hemi-spherical current domains ranging from ~mA to ~nA level according to the position being scanned by the LMP at 0.0 V. These results are attributed to a difference in the intercalating ability of Li+ ions into the charging graphite particles and are depending on the working substrate. Overall, electrolyte research using the feedback current near the anode particles is a promising method for improving the high rate performance of Li related batteries.

Original languageEnglish
Pages (from-to)380-389
Number of pages10
JournalInternational Journal of Electrochemical Science
Issue number1
StatePublished - Jan 2014


  • Feedback current
  • Graphite electrode
  • Li metal probe
  • Substrate collection
  • Tip generation


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