Abstract
A Fire and quench method has been applied to coat LiCoO2 with a disordered Li3PO4 film. The coated LiCoO2 powders display a 50% increase in power density relative to uncoated powders. The improvement in rate capability is consistent with other observations of similar effects in the LiFePO4 system. The results suggest a new mechanism that explains the effects in both systems. The rate capability appears to be limited by ionic diffusion in the electrolyte and the power may derive from the surficial films ability to reduce concentration polarization perpendicular to the particles' surfaces.
Original language | English (US) |
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Pages (from-to) | 200-202 |
Number of pages | 3 |
Journal | Electrochemistry Communications |
Volume | 13 |
Issue number | 2 |
DOIs | |
State | Published - Feb 2011 |
Externally published | Yes |
Keywords
- Electrolyte polarization
- High power
- LiPO
- LiCoO
- Surficial film
ASJC Scopus subject areas
- Electrochemistry