The LiNi 0.6 Mn 0.2 Co 0.2 O 2 material used in this work was obtained from Umicore. Scanning X-ray nanodiffraction was collected at beamline ID01 at the European Synchrotron Radiation Facility. The X-ray wavelength was 1.24 Å, with a flux of 10 9 ph/s, focused using a Fresnel zone plate. The beam size was focused to a 140 nm spot for the particle in Figures and, while the rest of the particles in 3 used a beam size of 80 nm. A 512 × 512 pixel Maxipix detector at a distance of 1.6 m was used to collect the nanodiffraction data. Detailed descriptions of the nanodiffraction microscope and mapping technique have been described previ-ously. The stripe features shown in Figure are not associated with linescan artifacts commonly observed in scanning probe microscopy. Nano-CT was performed at beamline ID16B at the European Synchrotron Radiation Facility, using an X-ray beam with a photon energy of 29.6 keV. The nano-beam (50 nm × 50 nm) flux was 1.6 10 12 ph/s. Four tomographies at four different distances from the focal plane were performed by acquiring 3203 projections over 360 • with an exposure time of 0.04 s per projection recorded on a PCO edge 5.5 camera. The 3D reconstruction with a pixel size of 25 nm was achieved in two steps: (1) Recursive phase retrieval calculation using an in-house developed octave script based on a Paganin-like approach with a delta/beta of 87 and (2) filtered back projection reconstruction using ESRF software PyHST2. 32 to 8-bit conversion along with ring removal has been performed using a dedicated in-house developed Matlab script.