Clarifying the origin of molecular O2 in cathode oxides
Our group leader Dr. Dmitry Aksenov and Dr. Andrey Geondzhian made a significant contribution to a study focused on the large-scale spectroscopic investigation of the anionic oxidation reaction mechanism in oxide-based cathode materials for lithium-ion batteries. The researchers conducted detailed modeling of various oxygen clusters in NMC materials with compositions 811 and 111, as well as Li-rich NMC and simulated the corresponding XPS spectra. The modeling revealed that molecular O2 forms under X-ray exposure during spectroscopic experiments but does not originate from the material's inherent structure. This study gives hope for the possibility of more efficient use of Li-rich NMC and rejects the pessimistic hypothesis of material degradation due to the formation of molecular oxygen.For further details, the full paper is available via the link.
The reasearch was covered by the media, including Atomic Energy [rus], Tech, Post & Science [eng], Skoltech news page [rus, eng] and others. Congratulations to Dmitry and Andrey, wishing all the best with upcoming high-level research!
