PhD Student Bahareh A. Sadeghi From Helmholtz Institute Münster Wins Poster Prize
Bahareh Sadeghi wins the poster prize of the battery conference "Kraftwerk Batterie / Advanced Battery Power 2024" together with co-authors
26 April 2024 – With her poster, PhD student Bahareh A. Sadeghi from Helmholtz Institute Münster (HI MS; IEK-12) of Forschungszentrum Jülich shows how the safety of lithium-ion battery cells (LIB) can be improved by non-aqueous aprotic electrolyte formulations. Together with her co-authors Dr Christian Wölke, Susanna Krämer, Dr Mariano Grünebaum, Dr Isidora Cekic-Laskovic, Helmholtz Institute Münster, Dr Mykhailo Shevchuk, Prof Dr Gerd-Volker Röschenthaler, Constructor University Bremen GmbH, and Prof Dr Martin Winter, Helmholtz Institute Münster and MEET Battery Research Center of the University of Münster, she convinced the expert jury at the "Kraftwerk Batterie / Advanced Battery Power 2024" conference. She received the second prize, which is endowed with 750 euros.
Stabilisation of the Silicon-Graphite Anode
Silicon-graphite anodes offer a high charging capacity and therefore great potential for the development of next-generation LIBs. However, they suffer from significant volume expansion of the silicon during charging and discharging cycles, which leads to a deterioration of the electrode function as well as lower battery performance and safety. In order to exploit the great potential of silicon-graphite anodes, as part of the cooperative study, Sadeghi developed electrolytes that stabilise the anode, improve cycle stability and reduce electrode and electrolyte degradation.
To this end, Sadeghi integrated and evaluated novel phosphorus-based film-forming and flame-retardant additives in electrolyte formulations. "Our research underscores the critical role of electrolyte additives in addressing challenges associated with advanced LIB technologies and highlights the need for thorough characterisation and optimisation to meet stringent performance and safety standards in next-generation battery applications," explains the chemist. Ultimately, the future energy storage systems should be able to be installed in motor vehicles, among other things.
SeNSE Cooperation Project
The researcher received support for her study through collaboration with her partners from the EU H2020 SeNSE Project, which is funded by the European Union’s Horizon 2020 research and innovation programme. The colleagues from the University of Bremen and Constructor University Bremen GmbH contributed to the synthesis of additives, while partners from the French company Solvionic provided insights into the industry and expertise for scaling up the synthesis of additives.