Solid-state batteries with ferroelectric sodium vanadate doped with lanthanum oxide
Abstract
The d.c. electric field effect on ferroelectric sodium vanadate, doped with different concentrations of lanthanum oxide, above the Curie temperature shows the formation of a solid-state battery. The voltage and current generated (measured between two electrodes placed in fused samples of the lanthanum-doped sodium vanadate) are recorded after applying and then removing a d.c. electric field of about 1 kV cm -1 at high temperature. The voltage and current both depend on the temperature as well as on the dopant concentration. A drastic change in both parameters is observed at the Curie temperature of the respective samples. The voltage decays with time, but the decay constant is quite large.
- Publication:
-
Journal of Power Sources
- Pub Date:
- 1994
- DOI:
- 10.1016/0378-7753(94)01962-2
- Bibcode:
- 1994JPS....52..301P