X-ray CT has been extensively utilised to image and understand the morphology of NMC811, due to its ability to probe the core of particles with non-destructive interactions. We have also shown previously that 4D imaging can been achieved, using sequential imaging of the same RoI during temperature cycling of battery materials. Lab based nano-CT was adequate to investigate cracking in the internal structure without imaging-induced damage of the sample before subsequent temperature cycles; however, the sample environment was not suitable for electrochemical control. Further ex-situ studies have shown that CT is indeed a viable technique for successfully imaging NMC811 particles and resolving micro-scale fractures within the internal structure. Work performed within our group has shown that a relationship between the potential of the positive electrode and the extent of cracking exist, proving that cracking is severe at 4.5 V, whereas the extent of cracking was much less so at lower voltages. Iterations of sample preparation have led to the use of a laser milled tab architecture as detailed in the methods section. This method has been presented as a stand-alone method for rapid CT imaging without the addition of an electrochemical component, as well as in XANES imaging. To assess the cracking response to electrochemical potential, an initial scan was taken at a pristine state (i.e. prior to any cycling) to set a base line for each particle and to determine the level of cracking innately present within the electrode. As shown in the pristine scan (see figure and) the level of cracking is minimal with few particles containing resolvable debonding between primary particles. Each particle assessed showed that there was no significant crack detected and a homogenous density was seen through all particles as confirmed by the GReyscale Erosion Algorithm for Tomography algorithm (GREAT), as shown in figure and described by Wade et al. This also allowed for a region of interest (RoI) to be determined and therefore reference particles to be located in the subsequent scan. Once scanned, the electrode was dried and built into a coin cell before charging to 4.5 V at C/50 to push the potential of the electrode beyond the typical point where c-lattice collapse occurs and guarantee cracking.