Thesis (9.3 MB) - 
Free access
Highlights
Doctoral Thesis
unige:86520 
 |
Novel solid electrolytes based on borohydrides and higher boranes |
|
| Author | ||
| Director | ||
| Defense | Thèse de doctorat : Univ. Genève, 2016 - Sc. 4963 - 2016/07/25 | |
| Abstract | This thesis focuses on the preparation and characterization of several new compounds based on borohydrides [BH4]- and closo-boranes [B12H12]2- with the aim of developing new materials for ambient temperature solid electrolytes. The underlying complexity and flexibility of the boron-hydrogen complex anions endows them as promising building blocks for design of superionic conductors. The dynamic reorientation of the anions can facilitate high cationic conductivity with low activation energy. The compounds were prepared mainly via solid state synthesis (mechanochemistry and annealing). X-ray powder diffraction was employed to solve and refine crystal structures, supported by thermal analysis, spectroscopic and computational methods. Impedance spectroscopy was done to establish correlations between ionic conductivity and crystal chemistry. Studies of voids and channels as possible conduction paths were done by using Voronoi-Dirichlet Polyhedra (VDP) method. | |
| Keywords | Borohydrides — Dodecahydro-closo-dodecaborates — Ionic conductors — Superionic — Powder diffraction — Solid electrolytes — Crystallography | |
| Identifiers | URN: urn:nbn:ch:unige-865206 | |
| Full text | ||
| Structures | ||
| Research group | Groupe Cerny | |
| Citation (ISO format) | SADIKIN, Yolanda. Novel solid electrolytes based on borohydrides and higher boranes. Université de Genève. Thèse, 2016. doi: 10.13097/archive-ouverte/unige:86520 https://archive-ouverte.unige.ch/unige:86520 |
385 hits 
399 downloads 
Contact an author
Update