Doctoral thesis
Open access

Investigations on the structure and properties of novel mixed-metal borohydrides

ContributorsSchouwink, Pascal
Defense date2014-10-13

This thesis deals with structural topologies of different dimensionalities in novel complex hydrides based on the tetrahydroborate anion. While classical applications of hydrides such as mobile hydrogen storage are discussed, the use of hydrogen-storage incompatible heavy metals, in especial lanthanides, yields new structural features and functionalities in borohydride chemistry. In this context, the photophysical properties as well as extensive structural dynamics provide means of venturing into new fields such as solid state phosphors and solid state electrolytes. Extensive characterizations are presented to correlate physical behaviour with the crystal structure. These include synchrotron X-ray diffraction, quasi-elastic neutron scattering and vibrational spectroscopies as well as optical spectroscopy and thermal analyses. In particular, di-hydrogen contacts are revealed to play a dominant role in phase transition mechanisms and it is shown that the tetrahydroborate anion can be utilized to engineer both lattice instabilities and physical properties in perovskite type complex hydrides.

  • Crystallography
  • Diffraction
  • Borohydride
  • Materials Science
  • Hydrogen Storage
  • Solid State
  • Luminescence
Research group
Citation (ISO format)
SCHOUWINK, Pascal. Investigations on the structure and properties of novel mixed-metal borohydrides. 2014. doi: 10.13097/archive-ouverte/unige:45684
Main files (1)

Technical informations

Creation01/14/2015 7:21:00 PM
First validation01/14/2015 7:21:00 PM
Update time03/14/2023 10:44:06 PM
Status update03/14/2023 10:44:06 PM
Last indexation10/18/2023 9:41:43 PM
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack