PhD thesis defense of Dries De Sloovere
Jun 13, 2019 - 16.00 uur
Agoralaan Gebouw D
Lokaal auditorium H5
De heer Dries DE SLOOVERE
Dries De Sloovere invites you to the public defense of his doctoral thesis entitled: "Wet-chemical synthesis processes of electrodes for sustainable lithium- and sodium-ion batteries".
Promoter is Prof. Dr. An Hardy.
Co-promoter is Prof. Dr. Marlies Van Bael
Sustainable technologies for energy storage (e.g. batteries) are a necessity to optimize the use of renewable energy sources because of their intermittent character. Therefore, batteries should ideally meet some important criteria: they should consist of abundant materials, be manufactured in a ecological manner, have a high energy density, should be inexpensive, and be safe to operate. In this framework, Dries De Sloovere’s (UHasselt, partner in EnergyVille) PhD thesis concerns the development of materials and their synthesis processes for sustainable batteries. Three strategies were followed to achieve this:
- Improving the energy efficiency of synthesis processes of battery materials by making their synthesis possible at a much lower temperature.
- Working towards batteries which does not contain flammable liquids, increasing their safety.
- Replacing lithium by sodium, which is a more sustainable and cost-efficient element. Sodium-ion batteries are predicted to be 30% cheaper than lithium-ion batteries within the next 15 years. They will most probably be used for stationary energy storage, for instance for storing the energy that is generated by photovoltaic solar panels.
A battery consists of three main components: the anode, cathode, and electrolyte. Previously developed materials did not meet all the necessary criteria for sustainability. Dries De Sloovere developed new materials that are perfectly suitable as sustainable anodes for sodium-ion batteries. These materials are mainly sodium titanates and composites of the latter with carbon. This research is a significant step forward toward the commercialization of sodium-ion batteries.