“…There is a regime of two coexisting phases, formed by small and large balloons, respectively. Each balloon is in a homogeneous and single-phase state, however, some balloons are in one phase and others are in the other phase; see [14,15,23] for more details. The same happens in the storage system during charging and discharging of the battery: there is a regime of particles with small, respectively, large lithium content.…”