Effect of mechanical pressure on the ionic conductivity of sodium dodecahydrido-closo-dodecaborate
To optimize the performance of solid-state batteries, - careful control - of the material properties is essential. Solid-state batteries require - significant mechanical pressure during assembly and cycling to ensure - intimate contact and stability of the electrochemical cell. Here we - show that...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article (Journal) Editorial |
| Language: | English |
| Published: |
February 13, 2025
|
| In: |
ACS materials letters
Year: 2025, Volume: 7, Issue: 3, Pages: 990-995 |
| ISSN: | 2639-4979 |
| DOI: | 10.1021/acsmaterialslett.4c02153 |
| Online Access: | Verlag, kostenfrei, Volltext: https://doi.org/10.1021/acsmaterialslett.4c02153
|
| Author Notes: | Lasse R. Kristensen, Gerrit J. Herrmann, Jørgen Skibsted, and Torben R. Jensen |
| Summary: | To optimize the performance of solid-state batteries, - careful control - of the material properties is essential. Solid-state batteries require - significant mechanical pressure during assembly and cycling to ensure - intimate contact and stability of the electrochemical cell. Here we - show that mechanical pressure can induce a polymorphic transition - (P21/c → Pbca) of sodium dodecahydrido-closo-dodecaborate, - Na2B12H12, which increases both the - boron dynamics and the ionic conductivity. Heating mechanically pressed - samples above 65 °C results in full conversion back to the initial - polymorph (P21/c), along - with a reduction of one order of magnitude in ionic conductivity, - which is consistent with the as-synthesized Na2B12H12. This work emphasizes the important role that postsynthesis - treatment can have on the ionic conductivity, the activation energy, - and the texture of solid electrolytes. |
|---|---|
| Item Description: | published as part of ACS Materials Letters special issue “Post-lithium battery materials” Gesehen am 16.07.2025 |
| Physical Description: | Online Resource |
| ISSN: | 2639-4979 |
| DOI: | 10.1021/acsmaterialslett.4c02153 |