3D correlative imaging of lithium ion concentration in a vertically oriented electrode microstructure with a density gradient. by Huang, C, Wilson, MD, Suzuki, K, Liotti, E, Connolley, T, Magdysyuk, OV, Collins, S, Van Assche, F, Boone, MN, Veale, MC, Lui, A, Wheater, R-M, Leung, CLA