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Thermal Stability of LiCoPO4Cathodes
- Source :
- Electrochemical and Solid State Letters; June 2008, Vol. 11 Issue: 6
- Publication Year :
- 2008
-
Abstract
- The thermal stability of LiCoPO4cathodes charged to different lithium contents was studied by synchrotron diffraction and differential thermal analysis. Both olivine-like phases LizCoPO4(z=0.6)and CoPO4appearing during the delithiation of LiCoPO4are unstable upon heating, and decompose readily in the range 100–200°C. The decomposition of lithium-poor phases leads to gas evolution and the crystallization of Co2P2O7. The role of carbon present in the electrochemically delithiated samples is discussed. The significantly lower stability of charged LiCoPO4in comparison with LiFePO4is a serious challenge for the application of this material in rechargeable Li-ion batteries.
Details
- Language :
- English
- ISSN :
- 10990062 and 19448775
- Volume :
- 11
- Issue :
- 6
- Database :
- Supplemental Index
- Journal :
- Electrochemical and Solid State Letters
- Publication Type :
- Periodical
- Accession number :
- ejs61760414
- Full Text :
- https://doi.org/10.1149/1.2894902