Extended Data Fig. 1: Reaction heterogeneity across multiple particles at 440 °.
From: Uniform pore structure enables negligible degradation in undoped and uncoated Ni-rich cathodes

a,b, PXM images showing spatial distribution of the Ni white-line energy across multiple particles quenched at 440 °C under heating rates of (a) 2 °C/min and (b) 10 °C/min.