Helmholtz-Zentrum Geesthacht, 2017-10-19

"Novel bi- and tri-metal borohydrides for solid state ion conductors for electrochemical energy storage"

Matteo Brighi / Early Stage Researcher at the Université de Genève, Switzerland

Working title of thesis

Novel bi- and tri-metal borohydrides for solid state ion conductors for electrochemical energy storage.


The main objective is the characterization of novel bi and tri-metal borohydrides with high ionic conductivity properties.
These compounds must have high cycling stability and do not decompose with the candidate electrodes.

Tasks and methodology

The samples are going to be obtained with a mechanochemical ball milling system; in order to characterize them powder X-ray diffraction (PXD), powder neutron diffraction (PND) and ab-initio crystal structure solution are going to be used in order to have the complete knowledge of the crystal structure.
In order to obtain ionic conductivity properties, the task involves electrochemical impedance spectroscopy (EIS) and nuclear magnetic resonance (NMR).
Other techniques, like differential scanning calorimetry (DSC) or thermogravimetric analysis (TGA), will be used to study the thermodynamic properties (i.e. phase transitions).

Short CV

Born in Cesena (Italy) and after technical studies in mechanics at high school G. Marconi (Forlì), Matteo Brighi obtained his master degree in physics in 2011 at the University of Bologna.
He graduated under the supervision of Dr. Luca Pasquini. Topic of his master thesis concerned hydrogen storage field studying the destabilization effect due to elastic clamping in core-shell Mg/MgO nanoparticles.
Matteo worked directly on the synthesis of Mg-based nanostructures with an inert gas condensation technique based on an ultra-high vacuum chamber equipped with both thermal and sputtering sources. He got practice with SEM, TEM, AFM, PXRD for morphological and chemical characterization as well as, for thermodynamic and kinetic properties, Sievert’s apparatus, DSC and optical hydrogenography (the latter was used at Delft university in the group of Prof. Bernard Dam, where Matteo went for three month during this collaboration).
He obtained a one-year research fellowship in the inter-departmental Industrial Research Centre of the University of Bologna where he gained a solid expertise and proficiency with experimental aspects, in particular in the development of computer applications for data acquisition form sensor/transducers and instrumental control.
Currently, he is working in the Crystallography group at the University of Geneva, under the supervision of Prof. Radovan Cerny, within the Marie Curie Research Training Network ECOSTORE with the topic “Novel bi-and tri-metal borohydrides for solid state ion conductors for electrochemical energy storage”.