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Lithium button cells with electrodes made of nickel-manganese-cobalt oxides (NMC) are very powerful. Unfortunately, their capacity decreases over time. Now, for the first time, a team has used a non-destructive method to observe how the elemental composition of the individual layers in a button cell changes during charging cycles.
The study, published in the journal Small, involved teams from the Physikalisch-Technische Bundesanstalt (PTB), the University of Münster, researchers from the SyncLab research group at HZB and the BLiX laboratory at the Technical University of Berlin. Measurements were carried out in the BLiX laboratory and at the BESSY II synchrotron radiation source.
Lithium-ion batteries have become increasingly better. The combination of layered nickel-manganese-cobalt oxides (NMC) with a graphite electrode (anode) has been well established as the cathode material in button cells and has been continuously improved. However, even the best batteries do not last forever; they age and lose capacity over time.
Scientists create a sun-powered artificial leaf that turns sunlight and CO₂ into fuel and chemicals, challenging fossil fuels.
Scientists have demonstrated that a surface reconstruction strategy can enable affordable hydrogen fuel production. The hydrogen fuel is created using The hydrogen evolution reaction (HER). However, scaling this process from a lab experiment to large-scale commercial production has been challenging.
Now, scientists in Japan have showcased that a surface reconstruction pathway can produce durable, non-noble metal-based cathodes that speed up the HER reaction.
Researchers highlighted that they can maintain their performance for more than 300 hours and are calculated to cost very close to the US Department of Energy’s 2026 H2 production target ($2.00 per kgH2-1).
Astronomers have made an incredible discovery of a large molecular cloud located just over 300 light-years from Earth that is invisible to the naked eye bu | Space
Asteroid Vesta is currently the second largest asteroid in the solar system, having been studied in-depth by NASA’s Dawn spacecraft between July 2011 | Space