Skip to main content Accessibility help
×
Home

Electrochemical and electrical properties of. Nb- and/or C-containing LiFePO4 composites

  • C. Delacourt (a1), C. Wurm (a1), L. Laffont (a1), F. Sauvage (a1), J.-B. Leriche (a1), R. Bouchet (a1), M. Morcrette (a1), J-M. Tarascon (a1) and C. Masquelier (a1)...

Abstract

LiFePO4-based powders prepared through various synthesis conditions are presented. Depending on whether the precursors contain carbon or not, LiFePO4-based composites obtained contain significant amounts of carbon as well. We did not succeed in doping LiFePO4 with Nb and produced, instead, crystalline β-NbOPO4 and/or an amorphous (Nb, Fe, C, O, P) matrix around LiFePO4 particles. The total electrical conductivity is of ∼10−9 S.cm−1 at 25°C with an activation energy of ca. 0.65 eV for pure LiFePO4 and LiFePO4/β-NbOPO4 composite. C-containing LiFePO4 samples, including those that had been tentatively doped with Nb, are much more conductive (up to 1.6.10−1 S.cm−1) with an activation energy ΔE ∼ 0.08 eV.

Copyright

References

Hide All
1. Padhi, A. K., Nanjundaswamy, K. S. and Goodenough, J. B., J. Electrochem. Soc., 144(4), 11881194 (1997).
2. Ravet, N., Goodenough, J. B., Besner, S., Simoneau, M., Hovington, P. and Armand, M., Abstract # 127, 196th Meeting of the Electrochemical Society, Hawaï (Oct. 1999).
3. Yamada, A., Chung, S. C. and Hinokuna, K., J. Electrochem. Soc., 148 (3), A224A229 (2001).
4. Huang, H., Yin, S. C., Nazar, L. F., Electrochem. Solid State Lett., 4(10), A170A172 (2001).
5. Franger, S., Le Cras, F., Bourbon, C. and Rouault, H., Electrochem. Solid State Lett. 5(10), A231A233 (2002).
6. Arnold, G., Garche, J., Hemmer, R., Strobele, S., Vogler, C., Wohlfahrt-Mehrens, M., J. Power Sources, 119–121, 247251 (2003).
7. Audemer, A., Wurm, C., Morcrette, M., Gwizdala, S. and Masquelier, C., WO2004/001881 A2 (2004).
8. Masquelier, C., Delacourt, C., Wurm, C., Laffont, L. and Morcrette, M., Abstract # 19, IMLB XII, Nara, (June 2004)
9. Tarascon, J.-M., Delacourt, C., Prakash, A. S., Morcrette, M., Hegde, M. S., Wurm, C. and Masquelier, C., Dalton Trans., 29882994 (2004).
10. Chung, S. Y., Bloking, J. T. and Chiang, Y. M., Nature Materials, 1, 123126 (2002).
11. Bauerle, J. E., Phys. Chem. Solids, 30, 2657 (1969).
12. Chung, S. Y. and Chiang, Y-M., Electrochem. Sol. State Lett. 6(12), A278A281 (2003).
13. Delacourt, C., Laffont, L., Bouchet, R., Wurm, C., Leriche, J.-B., Morcrette, M., Tarascon, J.-M. and Masquelier, C., accepted in J. Electrochem. Soc. (2004).
14. Xu, Y.-N., Chung, S-Y., Bloking, J. T., Chiang, Y-M., and Ching, W. Y., Electrochem. Sol. state Lett. 7(6), A131A134 (2004).
15. Subramanya Herle, P., Ellis, B., Coombs, N. and Nazar, L. F., Nature Materials, 3, 147152 (2004).
16. Ellis, B., Herle, P. S., and Nazar, L. F., abstract #1074, 203rd Electrochemical Society Spring Meeting, Paris (ECS, Pennington, New Jersey, 2003).

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