The distinguishing factor between LFP, LTO, and NMC is the presence of a first-order phase transition upon (de)lithiation for the first two: materials undergoing a first-order phase separation are susceptible to the kinetically induced memory effect. To confirm this hypothesis, more materials displaying a firstorder phase transition, such as LiNi0.5Mn1.5O4 (LMNO), LiMn0.4Fe0.6PO4 (LMFP), and Na3V2(PO4)3 (NVP) were evaluated using similar protocols, also displaying the same phenomenon (Figs. ). This observation aligns with previously documented memory effects on phase-separating materials , here demonstrating the great impact on realistic high-rate conditions. Altogether, these results suggest a broad and general phenomenon that highlights the crucial necessity for more extensive investigations into the dynamic response of these materials under diverse operating conditions. The grains are divided into active in both steps, active solely during the writing and reading steps (first, second, and third columns, respectively). c, Summary of the grain evolution during the memory protocol at 0.2C and 5.0C.