Skip to main content Accessibility help
×
Home

Structure-Stability Correlations in Li-ion Battery Cathode Materials

  • Christopher Patridge (a1), Corey Love (a2), Wojtek Dmowski (a3), David Ramaker (a2), Michelle Johannes (a4) and Karen Swider-Lyons (a2)...

Abstract

Detailed structural studies of two lithiated metal oxides, Li2CuO2 and nanoscale LiCoO2, have been carried out using ex situ high-energy X-ray diffraction (XRD) and in situ X-ray absorption spectroscopy (XAS) with the objective of understanding structural changes that might cause capacity loss during cycling. XRD on the cuprate was studied at various states of charge and phase composition, and the bulk state was determined by Rietveld refinement and pair density function (PDF) analysis. Results showed a largely irreversible structural change of the material upon oxidation of Cu2+ as well as CuO formation. The in-situ XAS of the LiCoO2 was analyzed through a difference method to extract the changes in the local structure that occur upon cycling in both the near edge (XANES) and extended region (EXAFS). Results suggest that cycling causes site exchange of the Co and Li ions near the surface of the nanoscale LiCoO2.

Copyright

References

Hide All
1. Imanishi, N., Shizuka, K., Ikenishi, T., Matsumura, T., Hirano, A., Takeda, Y., Solid State Ionics 177, 1341 (2006).
2. Prakash, A. S., Larcher, D., Morcrette, M., Hegde, M. S., Leriche, J.-B., Masquelier, C., Chem. Mater. 17, 4406 (2005).
3. Aurbach, D., Markovsky, B., Rodkin, A., Levi, E., Cohen, Y. S., Kim, H.-J., Schmidt, M., Electrochim. Acta. 47, 4291 (2002).
4. Love, C. T., Dmowski, W., Johannes, M. D., and Swider-Lyons, K. E., J. Solid State Chem. 184, 2412 (2011).
5. Patridge, C. J., Love, C. T., Swider-Lyons, K. E., Twigg, M. E., Ramaker, D. E., J. Solid State Chem. 203, 134 (2013).
6. Peng, Z. S., Wan, C. R., and Jiang, C. Y., J. Power Sources 72, 215 (1998).
7. Ravel, B., Newville, M., Phys. Scr. T115, 1007 (2005).
8. Love, C. T., Korovina, A., Patridge, C. J., Swider-Lyons, K. E., Twigg, M. E., Ramaker, D. E., J. Electrochem. Soc. 160, A3153 (2013).
9. Laubach, S., Laubach, S., Schmidt, P. C., Ensling, D., Schmid, S., Jaegermann, W., Thissen, A., Nikolowski, K., and Ehrenberg, H., Phys. Chem. Chem. Phys. 11, 3278 (2009).

Keywords

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed