The researchers studied the deformation dynamics of electrodes in layered battery intercalation cathodes using advanced imaging techniques such as operando transmission X-ray microscopy (TXM) and 3D X-ray laminography. They observed the cathode particles in real time during charging and discharging, revealing the non-uniform behavior of hundreds of thousands of particles. The main finding is strain cascades - chain reactions in which strain builds up in one part of the electrode and spreads to adjacent areas, leading to cracks and degradation. Each particle responds differently to electrochemical stress: some move quickly like shooting stars, others remain stable, creating local stresses. These processes cause mechanical energy loss and accelerate battery deterioration. The study suggests that applying controlled pressure to battery cells can alleviate deformation and improve performance. The research, published in Science (Volume 390, Issue 6779, pages 1272-1277), provides a step towards longer-lasting batteries[4][5][6].