Energy storage in complex metal hydrides for green future

PhD defence, Friday 11 August 2017. SeyedHosein Payandeh GharibDoust.

2017.08.11 | Steffi Hjerrild Iversen

SeyedHosein Payandeh GharibDoust

The challenge of finite fossil fuels along with their environmental impact requires a change to renewable energy sources. However, renewable energy obtained by solar cells or wind turbines fluctuates in time and geographically, and storage systems are demanded. For this purpose, the renewable energy could be stored in batteries or converted to hydrogen as an energy carrier by electrolysis. During his PhD studies, SeyedHosein Payandeh GharibDoust has synthesized numerous novel compounds with application in hydrogen storage or solid-state electrolytes. His research was based on mono- and bimetallic rare earth borohydrides which have high hydrogen densities and can be used as highly conducting electrolytes in Li batteries.

The new research findings contribute to the understanding of novel synthesis methods and the trends in the crystal structures of the mono- and bimetallic rare earth borohydrides. Moreover, the ionic conduction pathway in bimetallic borohydrides was studies. This leads to the knowledge of how ions move in the crystal structures and the ways to improve the conduction path.

The PhD degree was completed at Center for Materials Crystallography (CMC) at the Department of Chemistry and the Interdisciplinary Nanoscience Center (iNANO), Science and Technology, Aarhus University.

This résumé was prepared by the PhD student.

Time: Friday 11 August 2017 at 13.15
Place: Building 1523, room 318, the Lecture Theatre, Department of Physics and Astronomy, Ny Munkegade 120, Aarhus University, 8000 Aarhus C.
Title of dissertation: Complex Metal Hydrides for hydrogen storage and solid-state ion conductors
Contact information: SeyedHosein Payandeh GharibDoust, e-mail:, tel.: +45 42323843
Members of the assessment committee:
Senior researcher, PhD Vitalie Stavila, Sandia National Laboratories, Albuquerque, United States
Associate Professor Dr. Didier Blanchard, Department of Energy Conversion and Storage, Technical University of Denmark
Associate professor Jeppe V. Lauritsen (chair), iNANO, Aarhus University
Main supervisor:
Professor Torben René Jensen, iNANO and Department of Chemistry, Aarhus University
Associate Professor Dorthe B. Ravnsbæk, Department of Physics, Chemistry and Pharmacy, University of Southern Denmark
Language: The PhD dissertation will be defended in English

The defence is public.
The dissertation is available for reading at the Graduate School of Science and Technology/GSST, Ny Munkegade 120, building 1520, rooms 128-134, 8000 Aarhus C.

PhD defence
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Revised 23.02.2018