1. Electrochemical and structural study of LiCoPO 4-based electrodes.
- Author
-
Natalia N. Bramnik, Kirill G. Bramnik, Thorsten Buhrmester, Carsten Baehtz, Helmut Ehrenberg, and Hartmut Fuess
- Subjects
LITHIUM cells ,ELECTRIC batteries ,HIGH temperatures ,HEAT - Abstract
LiCoPO
4 samples were synthesized by two different techniques (high-temperature solid-state reaction and lower-temperature synthesis using NH4 CoPO4 ·H2 O as precursor) and tested as cathode materials for 5-V lithium batteries. An irreversible lithium deinsertion was observed for the high-temperature sample. In contrast, the application of lower-temperature synthesis led to a significant improvement of the lithium storage reversibility. Different delithiation mechanisms in LiCoPO4 were found for the samples obtained by different synthetic techniques. The nature of capacity fading during cycling of the cells is discussed. [ABSTRACT FROM AUTHOR]- Published
- 2004