Review—"Knees" in lithium-ion battery aging trajectories by Attia, PM, Bills, AA, Brosa Planella, F, Dechent, P, dos Reis, G, Dubarry, M, Gasper, P, Gilchrist, R, Greenbank, S, Howey, D, Liu, O, Khoo, E, Preger, Y, Soni, A, Sripad, S, Stefanopoulou, A, Sulzer, V