Insights into high Ni-content cathode stability and novel electrode architectures from in situ XRD-CT.

Ni-rich layered oxides offer high capacities and energy densities for Li-ion batteries. Our work has shown concentration gradient (CG) cathode architectures are a means to alleviate degradation which leads to capacity fade in Ni-rich cathodes. We wish to explore the CG homogeneity across and through the entire cathode film, and how this changes with long term cycling using in situ XRD mapping and XRD-CT on fresh/aged pouch cells to improve understanding and optimisation of cell construction.