| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5150438 | Solid State Ionics | 2017 | 5 Pages |
Abstract
Na2MnP2O7 is a promising sodium-ion battery cathode material. In our work we analyse electrical properties of Na2MnP2O7 ceramics by impedance spectroscopy in the broad frequency range from 10Â Hz to 10Â GHz. Temperature dependencies of conductivity indicated a phase transition taking place in the grains of ceramics at 663Â K, which was also evidenced by differential thermal analysis and thermal X-ray diffraction. In addition, close to the room temperature protonic conductivity strongly influences the total conductivity of the ceramics. Both newly observed phenomena may be important for overall sodium battery performance.
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Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Saulius DaugÄla, Tomas Å alkus, Algimantas Kežionis, Vilma VenckutÄ, Dagnija Valdniece, Antonija Dindune, Maud Barre, Antanas F. Orliukas,