Doctoral thesis: Exploring Reaction Pathways in Li-ion Batteries with Operando Gas Analysis

Robin Lundström Uppsala University, Department of Chemistry - Ångström Laboratory, Structural Chemistry, defends his thesis Exploring Reaction Pathways in Li-ion Batteries with Operando Gas Analysis.

The reliance on Li-ion batteries is increasing as we transition from fossil fuels to renewable energy sources. Despite their widespread use, a gap remains in understanding certain processes within these batteries, especially regarding the solid electrolyte interphase (SEI) and the impact of side reactions on Li-ion batteries. In-depth studies focusing on the reaction pathways of ethylene carbonate, the archetype Li-ion battery electrolyte solvent, identified the specific reaction pathways contributing to SEI formation. By providing insights into the negative electrode’s interphase and SEI formation through a custom-made Online Electrochemical Mass Spectrometry (OEMS) instrument, this research underscores the complexity of reaction pathways and the necessity of considering both major and minor, as well as, primary and secondary reactions for a holistic understanding of Li-ion batteries.

Link: https://uu.diva-portal.org/smash/record.jsf?pid=diva2%3A1834187&dswid=9096