Abstract
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 language | English |
|---|---|
| Pages (from-to) | 380-389 |
| Number of pages | 10 |
| Journal | International Journal of Electrochemical Science |
| Volume | 9 |
| Issue number | 1 |
| State | Published - Jan 2014 |
Keywords
- Feedback current
- Graphite electrode
- Li metal probe
- Substrate collection
- Tip generation